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Hydraulics and Electronics Components Product Information motion and progress

Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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Page 1: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

Hydraulics and Electronics ComponentsProduct Information

motion and progress

Page 2: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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Contents

Product Description Type Max. working Volumetric Displace- PagePressure (Bar) ment cc/rev

Pumps Internal Gear QX 320 5 - 500 4 + 5Internal Gear for low-viscosity fluids QXV 250 5 - 500 6 + 7External Gear AP 220 0,25 - 93 8 + 9

Power Units Compact UP 100 210 1,2 - 10 57Compact UP 50 210 0,25 - 1,6 58Compact UP 25 210 0,16 - 0,9 58Motor/pumps ET 220 0,25 - 22 59

DisplacementVolume cc/rev

Motors External Gear APM 220 0,5 - 93 10 + 11Internal Gear QXM 400 5 - 500 12 + 13Internal Gear Flow Divider QXT 320 5 - 250 14Gerotor BRF-BMS 280 52 - 2093 15 - 17Radial Piston BB 400 250 - 6300 18 + 19

Flow ratingl/min

Directional Monoblock:Valves - Lever operation + ON/OFF Solenoid HDM 400 40 - 70 20 + 21

- Lever operation + Proportional Solenoid MU 350 50 - 450 29

Sectional Valves:- Lever operated; ON/OFF Solenoid HDS 320 45 - 120 22 + 23

and Proportional Solenoid- Lever operated; ON/OFF Solenoid L.8S 315 150 24 + 25

and Proportional Solenoid- Lever operated; Proportional Solenoid LV 350 180 - 330 26 + 27

pneumatic and hydraulic controls- Lever operated; ON/OFF Solenoid SV 350 100 - 450 28

and Proportional Solenoid

Sub-plare mounting- Lever operated and Proportional Solenoid PV 350 50 - 400 29- Solenoid Operated Directional Valve W 315 25 - 160 30Special Directional Valves W 315 30 - 80 31

Cartridge Valves Directional Control W 210 - 350 1 - 140 32Pressure Control D 20 - 450 1 - 250 33 + 34Flow Control M 315 6 - 250 35Check Valve R 210 - 420 25 - 250 36

Vertical Stacking Directional Control Valves - 210 20 - 250 37Assembly Pressure Control Valves - 20 - 315 20 - 250 38

Flow Control Valves SM 210 - 315 6 - 250 39Check Valves SR 250 - 350 25 - 250 40

Special Valves Mobile and System Solution - 40 - 420 20 - 350 41Rotating Mechanism Valves DLHV 350 15 56Fast Traverse Control EGP 350 250 56

Seat Valves Monoblock and SVH04 210 20 43sectional types WSH03 210 25 44

Flow control Flow dividers MTDA 315 4 - 250 45Priority Flow Control- Manually variable or fixed flow MTKA/MTQA/MTCA 315 70 + 80 46- Proportional Solenoid SR3G 315 6 - 100 47 + 48- Proportional Solenoid SR3C 315 10 - 80 49 + 50Differential Lock valves MT..DV. 420 25 - 200 51 + 52

Load Control Monoblock Cindy + BBV 420 150 - 500 53 + 54Valves Cartridge Cindy + BBVC 420 50 - 500 54

Pipe Rupture Valve ESV + RS. 400 40 - 400 55

Controllers Joysticks F - - 60Electronics E - - 42, 61 - 63

Page 3: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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High Pressure Internal Gear Pumps Type QX

long service lifenegligible flow- and pressure pulsationshigh volumetric efficiencysuitable for special fluids such as HFB,HFC, HFD and bio-degradablessuitable for variable-speed drives

Technical Data

Pressure range 1 Pressure range 2 Pressure range 3

Effective Flow Type Continuous/ Power Maximum Type Continuous/ Power Maximum Type Continuous/ Power Maximumdisplacement rate1 Max.interm. require- speed Max.interm. require- speed Max.interm. require- speed

norm eff. press ment2 press ment2 press ment2

(cc/rev) (cc/rev) (l/min) (bar) (KW) (min-1) (bar) (KW) (min-1) (bar) (KW) (min-1)

005 5.1 7.4 QX22-005 210/250 2.7 5000 QX23-005 320/400 4.1 5000

006 6.3 9.1 QX22-006 210/250 3.2 5000 QX23-006 320/400 4.9 5000

008 8.0 11.5 QX22-008 210/250 4.3 5000 QX23-008 320/400 6.6 5000

010 10.3 14.9 QX21/010 160/210 4.1 4500 QX32-010 210/250 5.4 4300 QX33-010 320/400 8.2 4300

012 12.6 18.3 QX21-012 125/160 4.1 4000 QX32-012 210/250 6.5 4300 QX33-012 320/400 9.8 4300

016 15.9 23.0 QX21-016 100/125 4.1 3600 QX32-016 210/250 8.6 4300 QX33-016 320/400 13.1 4300

020 20.0 29.0 QX31-020 160/210 8.2 3600 QX42-020 210/250 10.8 3600 QX43-020 320/400 16.4 3600

025 25.3 36.7 QX31-025 125/160 8.2 3250 QX42-025 210/250 13.4 3600 QX43-025 320/400 20.5 3600

032 31.3 45.2 QX31-032 100/125 8.2 3000 QX42-032 210/250 17.2 3600 QX43-032 320/400 26.2 3600

040 40.7 59.0 QX41-040 160/210 16.4 3000 QX52-040 210/250 21.5 3000 QX53-040 320/400 32.8 3000

050 50.3 72.9 QX41-050 125/160 16.4 2600 QX52-050 210/250 26.9 3000 QX53-050 320/400 41.0 3000

063 64.7 93.8 QX41-063 100/125 16.4 2300 QX52-063 210/250 33.9 3000 QX53-063 320/400 51.6 3000

080 78.6 114.0 QX51-080 160/210 32.8 2300 QX62-080 210/250 43.0 2300 QX63-080 320/400 65.6 2300

100 101.1 146.0 QX51-100 125/160 32.8 2100 QX62-100 210/250 53.8 2300 QX63-100 320/400 82.0 2300

125 127.3 184.0 QX51-125 100/125 32.8 18003 QX62-125 210/250 67.2 2300 QX63-125 320/400 102.5 2300

160 160.5 232.0 QX61-160 160/210 64.6 18003 QX82-160 210/250 86.1 1800 QX83-160 320/400 131.2 1800

200 202.1 293.0 QX61-200 125/160 64.6 18003 QX82-200 210/250 107.6 1800 QX83-200 320/400 163.9 1800

250 249.7 362.0 QX61-250 100/125 64.6 18003 QX82-250 210/250 134.5 15003 QX83-250 320/400 205.0 15003

315 326.0 472.0 QX81-315 160/210 129.1 18003

400 402.6 583.0 QX81-400 125/160 129.1 15003

500 498.5 722.0 QX81-500 100/125 129.1 15003

1 at pressure p = 1 bar and speed n = 1450 rpm 2 theoretical value at the permitted continuous pressure for mineral oil at n = 1450 rpm 3 max. suction heigh 150 mm at speed n = 1800 rpm

Page 4: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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Type QX 2.. QX 3.. QX 4.. QX 5.. QX 6.. QX 8..

Pressure range 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3

Suction S G 1“ G 1 1/4“ SAE 1 1/2“ SAE 2“ SAE 2 1/2“ SAE 3“

Pressure P G 1/2“ G 3/4“ SAE 1“ SAE 1 1/4“ SAE 1 1/2“ SAE 2“

A 118 132 170 212 267 330

B 100 106 146 181 229 280

C 9 11 14 18 22 26

N 63 - h8 82,5 - 0,05 101,60 - 0,05 127,0 - 0,05 152,40 - 0,05 200 - h8

O 10 10 12 14 18 22

V 6 6 7 7 7 9

D 20 - j6 25 - j6 32 - j6 40 - j6 50 - j6 63 - j6

E 36 42 58 82 82 105

F 6 8 10 12 14 18

G 22,5 28 35 43 53,5 67

I 45 50 68 92 92 117

K 82,5 94 120,5 152,5 166 207

L 136 118 153 164 144 189 202 176 232 242 210 280 288 248 338 361 311 426

M 1) 55 90 1) 69,5 114,5 1) 87 143 1) 102 172 1) 119 209 1) 151 266

T 85 107 133 177 214 220 273 275

Z 50 60 62,5 78 97,5 125

Weight kg 5 5 6,5 10 9,5 12,5 18 17 22 33 31 40 64 60 76 130 120 160

Dimensions

Description

The basic elements ot the QX internal gear pumpare the pinion, the internal gear and the gearhousing. Including the drive shaft there are onlythree moving parts. Pressure ranges 3 and 4 have2 and 3 gear sets respectivelyTandem and multiple pumps mean that there areover 1000 possible variations available.

Body

Shaf

tM

ount

ing

Gear ring

Crescent

Pinion

Suction zone

Pressure zone

Shaft

1) Port P for pressure range 1 = opposite Port S

Page 5: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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Internal Gear Pumps Type QXV for low-viscosity fluids

long service lifenegligible flow- and pressure pulsationshigh volumetric efficiencylow pump wearsuitable for low-viscosity fluids such asaviation jet fuel, diesel fuel, brake fluids,pentosin and HFA

Technical Data

Pressure range 1 2 3 4 5 6 1 2–6

No. of stages 1 1 2 3 4 5

Working Pressure 25 50 100 150 200 250

Displacement Type Type Type Type Type Type Speedcc/U R.P.M.

005 QXV 22-005 QXV 23-005 QXV 24-005 QXV 25-005 QXV 26-005

006 QXV 22-006 QXV 23-006 QXV 24-006 QXV 25-006 QXV 26-0063000

008 QXV 22-008 QXV 23-008 QXV 24-008 QXV 25-008 QXV 26-0083600

010 QXV 21-010 QXV 32-010 QXV 33-010 QXV 34-010 QXV 35-010 QXV 36-010

012 QXV 21-012 QXV 32-012 QXV 33-012 QXV 34-012 QXV 35-012 QXV 36-0123000 3000

016 QXV 21-016 QXV 32-016 QXV 33-016 QXV 34-016 QXV 35-016 QXV 36-0163600 3600

020 QXV 31-020 QXV 42-020 QXV 43-020 QXV 44-020 QXV 45-020 QXV 46-020

025 QXV 31-025 QXV 42-025 QXV 43-025 QXV 44-025 QXV 45-025 QXV 46-0251800 3000

032 QXV 31-032 QXV 42-032 QXV 43-032 QXV 44-032 QXV 45-032 QXV 46-0323000 3600

040 QXV 41-040 QXV 52-040 QXV 53-040 QXV 54-040 QXV 55-040 QXV 56-040

050 QXV 41-050 QXV 52-050 QXV 53-050 QXV 54-050 QXV 55-050 QXV 56-0501500 1800

063 QXV 41-063 QXV 52-063 QXV 53-063 QXV 54-063 QXV 55-063 QXV 56-0631800 3000

080 QXV 51-080 QXV 62-080 QXV 63-080 QXV 64-080 QXV 65-080 QXV 66-080

100 QXV 51-100 QXV 62-100 QXV 63-100 QXV 64-100 QXV 65-100 QXV 66-1001500 1500

125 QXV 51-125 QXV 62-125 QXV 63-125 QXV 64-125 QXV 65-125 QXV 66-1251800 1800

160 QXV 61-160 QXV 82-160 QXV 83-160 QXV 84-160 QXV 85-160 QXV 86-160

200 QXV 61-200 QXV 82-200 QXV 83-200 QXV 84-200 QXV 85-200 QXV 86-2001200 1500

250 QXV 61-2502) QXV 85-250 QXV 83-250 QXV 84-250 QXV 85-250 QXV 86-2501500 1800

320 QXV 81-3152)

400 QXV 81-4002) 1200

500 QXV 81-5002) 1500

1 recommended speeds:– the lower the speed, the smaller the ∆P/stage

(linear relationship)– speeds for 50 and 60 Hz

2 Second suction port is necessary for n > 1200 rpm

Page 6: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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Dimensions QXV2 QXV3 QXV4 QXV5 QXV6 QXV8

Pressure range 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3

Suction port to

SAE J518 1) S G1”3) G1 1/4”3) 1 1/2” 2” 2 1/2” 3”

thread thread

Pressure port to

SAE J518 1) P G1/2” 3) 4) G3/4” 3) 4) 1” 1 1/4” 1 1/2” 2”

thread thread

Drain port R G 1/4” G 1/4” G 1/4” G 1/4” G 3/8” G 1/2”

Mounting: A 118 132 170 212 267 330

oval B (SAE) – 106 146 181 229 –

2-hole B (Metr.) 100 109 140 180 224 280

flange to C 9 11 14 18 22 26

ISO 3019/1 (SAE) N (SAE) – 82,55 – 0,05 101,6 – 0,05 127 – 0,05 152,4 – 0,05 –

ISO 3019/2 (metr.) N (Metr.) 63 h8 80 h8 100 h8 125 h8 160 h8 200 h8

O 10 10 12 14 18 22

V 6 6 7 7 7 9

4-hole flange X (Metr.) 9 9 12 14 18 22

ISO 3019/2 Y (Metr.) 85 103 125 160 200 250

Shaft end: D 20 j6 25 j6 32 j6 40 j6 50 j6 63 j6

parallel, to E 36 42 58 82 82 150

ISO/R775 2) F 6 8 10 12 14 18

G 22,5 28 35 43 53,5 67

I 45 50 68 92 92 117

Housing K 37,5 44 52,5 60,5 74 90

Pressure range 1/2/3 L 136 118 153 164 144 189 202 176 232 242 210 280 288 248 338 361 331 426

M – 55 90 – 69,5 114 – 87 143 – 102 172 – 119 209 – 151 266

Pressure range 4/5/6 L 188 223 258 234 279 324 288 344 400 350 420 490 428 518 608 541 656 771

M 125 160 195 160 205 250 199 255 311 242 312 382 299 389 479 381 496 611

T 85 107 133 177 214 220 273 275

Z 50 60 62,5 78 97,5 125

Weight kg 5 5 6,5 10 9,5 12,5 18 17 22 33 31 40 64 60 76 130 120 160

1) for pipe flange dimensions see brochureP00049

2) for other shaft ends, contact Bucher3) threaded ports to DIN 3852, Part 2

4) pressure port to SAE J 518 is possiblefor pressure ranges 2 +3

1 2 3 4 5 6

Pressure range:

Page 7: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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External Gear Pumps Type AP

Pressure compensated bearing plate fora high efficiencyDouble pumps and integrated valvesPressure compensated bearing plateOutrigger bearingsFull range of accessories

Technical Data

Size Displacement max. Pressure min. Shaft Speed max. Shaft SpeedP1 P2 P3 R.P.M. R.P.M.

cc/U bar bar bar when P ≤ P1 when > P1 when P ≤ P1 when P > P1

AP0.5/0.25 0.25 170 180 200 800 1000 6000 7000AP0.5/0.5 0.5 190 210 230 650 800 6000 7000AP0.5/0.75 0.75 190 210 230 650 800 6000 7000AP0.5/0.9 0.9 190 210 230 650 800 6000 7000AP0.5/1.2 1.2 170 120 200 550 700 5000 6000APO.5/1.6 1.6 170 180 200 550 700 5000 6000APR0.5/0.25 0.25 150 160 180 800 1000 6000 7000APR0.5/0.5 0.5 170 190 210 650 800 6000 7000APR0.5/0.75 0.75 170 190 210 650 800 6000 7000APR0.5/0.9 0.9 170 190 210 650 800 6000 7000APR0.5/1.2 1.2 150 160 180 550 700 5000 6000AP100/1.2 1.2 210 250 280 800 1000 4500 5000AP100/1.7 1.7 210 250 280 650 800 4500 5000AP100/2.5 2.5 210 250 280 650 800 4500 5000AP100/3.5 3.5 210 230 250 650 800 3500 4000AP100/4.3 4.3 210 230 250 550 700 3500 4000AP100/5 5 210 230 250 500 650 3000 3500AP100/6.5 6.5 190 220 240 500 650 2500 3000AP100/8 7.8 180 210 230 500 650 2500 3000AP100/10 10 150 180 200 600 650 2000 2500AP200/4.5 4.3 220 250 280 800 1000 3500 4000AP200/6.5 6.3 220 250 280 800 1000 3500 4000AP200/8.5 8.3 220 250 280 800 1000 3500 4000AP200/11 11 210 230 250 700 900 3500 4000AP200/15 15 210 230 250 650 800 3500 4000AP200/19 18.9 210 230 250 650 800 3000 3500AP200/22 21.9 200 220 240 600 750 3000 3500AP200/26 25.9 190 210 230 600 750 2500 3000AP300/27 27 220 250 280 600 800 3000 3500AP300/31 31 220 250 280 600 800 3000 3500AP300/38 38 220 250 280 600 800 2500 3000AP300/45 45 200 230 260 600 800 2500 3000AP300/53 53 200 230 260 600 800 2500 3000AP300/63 63 180 210 240 550 700 2500 3000AP300/75 75 170 190 220 550 700 2000 2500

AP300/93 93 150 170 200 500 650 2000 2500

P1 = Continuous pressure P2 = Intermittent pressure P3 = Peak pressure (transient)

Page 8: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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Outline dimensions for Standard Pumps

Description

A BAP0.5/0.25 64,5 29AP0.5/0,5 67 30,5AP0.5/0,75 69 31,5AP0.5/0,9 70,5 32AP0.5/1,2 73 33,5APO.5/1,6 77 35,5

More detailed dimensionsof the shaft flange portconnections can be foundin the External Gearcatalogue.

Type A B C D E G H I K Ø L M Ø VAP100/1.2 82,5AP100/1.7 84,4AP100/2.5 88AP100/3.5 92AP100/4.3 96 29,2 4 11 68 87 71,9 52,4 26,2 7,1 M7

25,4

AP100/5 98,5 f8

AP100/6.5 103,5AP100/8 109AP100/10 118AP200/4.5 88AP200/6.5 88AP200/8.5 88AP200/11 104 40 5 15,9 89 113,5 96 71,5 32,5 8,5

M12 25,4

AP200/15 104 x 1,5 f8

AP200/19 118AP200/22 118AP200/26 118AP300/27 126AP300/31 129AP300/38 133,5AP300/45 138,5 47 5 23,5 120 152 128 98 42 10,5

M14 50,8

AP300/53 143 x 1,5 f8

AP300/63 150AP300/75 157,5AP300/93 168

The drive gear (1) rotates the driven gear (2) sothat oil is transferred from the suction to the pressure side of the pump.

The plates (3) both as bearings for the gears andbalance the axial and radial faces in proportion tothe operating pressure.

1 - driving gear

2 - driven gear

3 - casings

4 - housing

5 - flange

6 - cover

10 - shaft seal

Page 9: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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External Gear Motor Type APM

Single Direction Rotation = APM

Reversible = APMR

High effeciencyRobust constructionAlso with outrigger bearing(not for APMOS and APMROS)

Technical Data

Type Displacement max. Pressure Shaft Speed Torque OtherP1 P2 P3 RPM Nm Data

cc/rev bar bar bar n min n max when ∆P =100 barAPM0.5/0.5 0.5 190 210 230 650 7000 0,75APM0.5/0.75 0.75 190 210 230 650 7000 1,15APM0.5/0.9 0.9 190 210 230 650 7000 1,45APM0.5/1.2 1.2 170 180 200 550 6000 1,90APMO.5/1,6 1,6 170 180 200 550 6000 2,56APMR0.5/0.5 0.5 170 190 210 650 7000 0,73APMR0.5/0.75 0.75 170 190 210 650 7000 1,14APMR0.5/0.9 0.9 170 190 210 650 7000 1,45APMR0.5/1.2 1.2 150 160 180 550 6000 1,87APM100/1.7 1.7 210 250 280 650 5000 2,6APM100/2.5 2.5 210 250 280 650 5000 3,5APM100/3.5 3.5 210 230 250 650 4000 4,75APM100/4.3 4.3 210 230 250 550 4000 5,8APM100/5 5 210 230 250 500 3500 6,85APM100/6.5 6.5 190 220 240 500 3000 8,9APM100/8 8 180 210 230 500 3000 10,8APM100/10 10 150 180 200 500 2500 15,0APM200/6.5 6.5 220 250 280 800 4000 8,5APM200/8.5 8.5 220 250 280 800 4000 11,25APM200/11 11 210 230 250 700 4000 14,85APM200/15 15 210 230 250 650 4000 20,0APM200/19 19 210 230 250 650 3500 25,7APM200/22 22 200 220 240 600 3500 29,75APM200/26 26 190 210 230 600 3000 35,0APM200 Available on request.APM300/27 27 220 250 280 600 3500 36,5APM300/31 31 220 250 280 600 3500 42,00APM300/38 38 220 250 280 600 3000 51,50APM300/45 45 200 230 260 600 3000 61,00APM300/53 53 200 230 260 600 3000 71,50APM300/63 63 180 210 240 550 3000 85,0APM300/75 75 170 190 220 550 2500 102,0APM300/93 93 150 170 200 500 2500 125,0

P1 = Continuous pressure p2 = Intermittent pressure P3 = Peak pressure (Transient)

Ope

ratin

g te

mpe

ratu

re r

ange

-15

to +

80

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isco

sity

ran

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to

700

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2 /sF

iltra

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ress

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Page 10: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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Outline dimensions for Standard Motors

Description

A BAPM0.5/0,5 67 30,5APM0.5/0,75 69 31,5APM0.5/0,9 70,5 32APM0.5/1,2 73 33,5Dimensions also apply to APMR

More detailed dimensionsof the shaft flange portconnections can be foundin the External Gearcatalogue.

Type A B C D E G H I K Ø L M Ø VAPM100/1.7 84,4APM100/2.5 88APM100/3.5 92APM100/4.3 96 29,2 4 11 68 87 71,9 52,4 26,2 7,1 M7

25,4

APM100/5 98,5 f8

APM100/6.5 103,5APM100/8 109APM100/10 118APM200/6.5 88APM200/8.5 88APM200/11 104APM200/15 104 40 5 15,9 89 113,5 96 71,5 32,5 8,5

M12 25,4

APM200/19 118 x 1,5 f8

APM200/22 118APM200/26 118APM300/27 126APM300/31 129APM300/38 133,5APM300/45 138,5APM300/53 143 47 5 23,5 120 152 128 98 42 10,5

M14 50,8

APM300/63 150 x 1,5 f8

APM300/75 157,5APM300/93 168

Gear motors are dimensionally the same as the corresponding pumps and in operation provide the opposite function to the pumps. (However it is not possible to convert a pump into a motor.)Due to the internal seal layout these motors aresingle direction rotation and cannot be driven inreverse. Internal leakage oil is fed internally to the low pressure side.

1 - gear wheels

2 - gear wheels

3 - casings

4 - housing

5 - flange

6 - cover

10 - shaft seal

Ports

Suction G 1/4“Pressure

Drain Portfor APMR = 1/8“

Page 11: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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Internal Gear Unit Type QXM

low noise levelsnegligible flow- and pressure pulsations400 bar maximum pressurehydrodynamic bearing support ensureslong service lifesuitable for special fluids such as HFB,HFC, HFD and bio-degradablessuitable for variable-speed operation4-quadrant (fully bi-directionalpump/motor) or 2-quadrant operation is possible

Technical data

Displacement/consumption Maximum speed 3) Type Cont.-/ Torquecc/rev rpm Interm. pressure 2)

1)nom. eff. as a pump as a motor bar Nm010 10,0 4000 QXM21-010 160/210012 12,6 3600 5500 QXM21-012 125/160 25016 15,6 3200 QXM21-016 100/125020 20,3 3200 QXM31-020 160/210025 25,1 3000 5000 QXM31-025 125/160 50032 32,3 2700 QXM31-032 100/125040 39,2 2700 QXM41-040 160/210050 50,5 2350 4600 QXM41-050 125/160 100063 63,5 2050 QXM41-063 100/125080 80,1 2050 QXM51-080 160/210100 100,9 1900 4000 QXM51-100 125/160 200125 124,6 1620 QXM51-125 100/125160 162,7 1500 QXM61-160 160/210200 200,9 1350 3200 QXM61-200 125/160 400250 248,8 1200 QXM61-250 100/125315 326 1200 QXM81-315 160/210400 402,6 1100 3000 QXM81-400 125/160 800500 498,5 1000 QXM81-500 100/125

Pressure range 2 3Displacement/ Maximum speed 3) Typ Cont.-/ Torque Type Cont.-/ Torqueconsumption rpm Interm. 2) Interm. 2)

cc/rev pressure pressure1) 1)

nom. eff. as a pump as a motor bar Nm bar Nm005 5,1 QXM22-005 17 QXM23-005 26,0006 6,3 4500 6000 QXM22-006 210/250 21 QXM23-006 320/400 32,0008 8,0 QXM22-008 26,5 QXM23-008 40,7010 10,0 QXM32-010 33,5 QXM33-010 51,0012 12,6 3900 5500 QXM32-012 210/250 42,0 QXM33-012 320/400 64,0016 15,6 QXM32-016 52,0 QXM33-016 80,0020 20,3 QXM42-020 68,0 QXM43-020 103,0025 25,1 3200 5000 QXM42-025 210/250 84,0 QXM43/025 320/400 128,0032 32,3 QXM42-032 108,0 QXM43-032 164,0040 39,2 QXM52-040 131,0 QXM53-040 200,0050 50,5 2700 4500 QXM52-050 210/250 169,0 QXM53-050 320/400 257,0063 63,5 QXM52-063 212,0 QXM53-063 323,0080 80,1 QXM62-080 268,0 QXM63-080 408,0100 100,9 2050 4000 QXM62-100 210/250 337,0 QXM63-100 320/400 514,0125 124,6 QXM62-125 416,0 QXM63-125 635,0160 162,7 1500 QXM82-160 544,0 QXM83-160 828,0200 200,9 1200 3500 QXM82-200 210/250 671,0 QXM83-200 320/400 1023,0250 248,8 1000 QXM82-250 832,0 QXM83-250 1267,0

1) Intermittent pressure for max. 20 sec/min but notmore than 10% of the duty cycle

2) Theoretical value at the maximum permitted conti-nuous pressure. For starting torques

3) For higher speed contactBucher Hydraulics

Page 12: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

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Dimensions

Frame size 2 3 4 5 6 8

Pressure range 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3

Service ports to

SAE J518 1) 4) P1, P2 G 1/2” 3) G 3/4” 3) 1” 1 1/4” 1 1/2” 2”

thread thread

Drain port to:

DIN 3852 PL G 1/4” G 1/4” G 1/4” G 1/4” G 3/8” G 1/2”

Part 2

Mounting: oval A 118 132 170 212 267 330

2-hole flange to B 100 (metr.) 106 (SAE) 146 (SAE) 181 (SAE) 229 (SAE) 280 (metr.)

ISO 3019/1 C 9 11 14 18 22 26(SAE-sizes 3–6)

N 63 h8 (metr.) 82,55–0,05 (SAE) 101,6–0,05 (SAE) 127–0,05 (SAE) 152,4–0,05 (SAE) 200 h8 (metr.)

ISO 3019/2 O 8,5 8,5 10,5 12,5 16,5 20(Metr.-sizes 2+8)

V 6 6 7 7 7 9

Shaft end: D 20 j6 25 j6 32 j6 40 j6 50 j6 63 j6

parallel, to E 36 42 58 82 82 105

ISO/R775 2) F 6 8 10 12 14 18

G 22,5 28 35 43 53,5 67

I 45 50 68 92 92 117

Housing K 37,5 44 52,5 60,5 74 90

L 136 118 153 164 144 189 202 176 232 242 210 280 288 248 338 361 331 426

M – 55 90 – 69,5 114 – 87 143 – 102 172 – 119 209 – 151 266

T 85 107 133 177 214 220 273 275

Z 50 60 62,5 78 97,5 125

Weight kg 5 5 6,5 10 9,5 12,5 18 17 22 33 31 40 64 60 76 130 120 160

1) for 3000 psi pipe flange dimensions see brochure P00049 2) for other shaft ends, contact Bucher 3) threaded ports to DIN 3852, Part 2

Pressure

range 3

P1 + P2

Page 13: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

14

Internal Gear Flow Divider Type QXT

high efficiencya very wide range of division ratios isavailablethe inlet flow can be divided into as manyas four portionshigh division accuracyalso suitable for special fluids such asHFC, environmentally friendly or low viscosity fluids

Type Outlet displacement Cont./Interm. Speed Maximum inlet flow Q0

pressure 1) max/min 2 outlet flows 3 outlet flows 4 outlet flowscc/rev bar rpm l/min l/min l/min

5 63 95 125QXT 22 6 250/320 6300/1250 80 120 160

8 100 150 200QXT 32 12 250/320 5000/1000 120 180 240

16 160 240 320QXT 42 25 250/320 4000/800 200 300 400

32 250 380 500QXT 52 50 250/320 3200/630 320 480 640

63 400 600 800QXT 62 100 250/320 2500/500 500 750 1000

125 630 950 1260QXT 82 200 250/320 2000/400 800 1200 1600

250 1000 1500 2000

Frame size 2 3 4 5 6 8J2 (SAE) G 1/4” G 1 1/2” 2” 3” 3 1/2” 4”E (SAE) G 1/2” G 3/4” 1” 1 1/4” 1 1/2” 2”K2 102 129 159,5 190 230,5 282,5L2 204 258 319 380 461 565Z 50 60 62,5 78 97,5 125Q2 67 87 110,5 127 149 178,5Y 55 60 75 90 112 140

Technical data

Dimensions

Page 14: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

15

Gerotor Motors

Without drain lineIntegrated speed sensorIntegrated valvesParking brake or wheel hubOutput torques from 115 up to 3900 NmDisplacements from 52 to 2095 cc/revWorking pressures up to 315 bar

Description

Gerotor motors are slow speed/high torque motors.The power element of this motor is the rotor unit,comprising rotor, outer ring (stator) and 7 cylinders. (BMP has 6 cylinders.)The patented rotor profile prevents direct leakagebetween the pressure chambers, resulting in negligible internal leakage and volumetric efficiency.

Tank area

Pressure area

Cylinders (7)

Outer ring

Rotor

Page 15: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

16

Technical Data Type BRF – BDT

Type Displacement Shaft Speed Flow rate Pressure drop Torque Weightcont. / Inter. cont. / Inter. cont. / Inter. / peak cont. / Inter. (standard type)

V cc / rev n RPM Q ltr. / min p bar M Nm m kgBRF-050 52 400 / 490 23 / 38 121 / 138 / 155 82 / 95 7,3BRF-080 76 460 / 540 38 / 45 121 / 138 / 155 121 / 138 7,5BRF-090 89 420 / 580 38 / 53 121 / 138 / 155 147 / 167 7,6BRF-100 103 510 / 570 53 / 61 121 / 138 / 155 169 / 194 7,8BRF-110 111 460 / 600 53 / 68 121 / 138 / 155 184 / 214 6,5BRF-125 127 410 / 530 53 / 68 103 / 121 / 155 180 / 208 8,0BRF-160 164 370 / 460 61 / 76 103 / 121 / 155 222 / 265 8,3BRF-200 205 300 / 370 61 / 76 103 / 121 / 155 297 / 343 8,5BRF-250 254 300 / 360 76 / 91 86 / 103 / 121 287 / 342 9,0BRF-300 293 300 / 310 76 / 91 69 / 86 / 103 277 / 349 9,3BRF-400 409 190 / 220 76 / 91 69 / 86 / 103 377 / 462 10,3BRE-120 121 360 / 490 45 / 61 207 / 241 / 276 327 / 383 10,6BRE-160 162 370 / 470 61 / 76 207 / 241 / 276 475 / 542 10,9BRE-200 204 300 / 370 68 / 83 207 / 241 / 276 542 / 633 11,0BRE-230 233 260 / 320 68 / 83 207 / 241 / 276 644 / 712 11,1BRE-260 261 260 / 350 76 / 91 207 / 241 / 276 712 / 791 11,3BRE-300 300 250 / 320 83 / 95 207 / 241 / 276 825 / 938 11,7BRE-350 348 220 / 270 83 / 95 207 / 241 / 276 921 / 1045 12,8BRE-375 375 200 / 250 76 / 91 207 / 241 / 276 1006 / 1158 12,2BRE-470 465 160 / 200 76 / 91 172 / 189 / 207 1096 / 1184 12,8BRE-540 536 140 / 170 76 / 91 138 / 172 / 207 983 / 1243 13,3BRE-750 748 100 / 130 76 / 91 103 / 121 / 138 1062 / 1237 14,7BCE-120 121 360 / 490 45 / 61 207 / 224 / 241 322 / 356 10,9BCE-160 162 370 / 470 61 / 76 207 / 224 / 241 424 / 501 10,9BCE-200 204 300 / 370 61 / 76 207 / 224 / 241 525 / 592 11,3BCE-230 233 260 / 320 61 / 76 207 / 224 / 241 559 / 646 11,4BCE-260 261 260 / 350 68 / 91 207 / 224 / 241 706 / 760 11,6BCE-300 300 250 / 320 76 / 95 207 / 224 / 241 802 / 862 11,9BCE-350 348 220 / 270 76 / 95 207 / 224 / 241 904 / 1017 13,1BCE-375 375 200 / 250 76 / 95 207 / 224 / 241 972 / 1040 12,4BCE-470 465 160 / 200 76 / 95 172 / 189 / 207 1040 / 1153 13,1BCE-540 536 140 / 170 76 / 95 138 / 172 / 207 1003 / 1209 13,6BCE-750 748 100 / 130 76 / 95 103 / 121 / 138 1082 / 1237 15,0BHB-50 52 680 / 830 38 / 45 207 / 241 / 276 135 / 158 8,8BHB-80 76 670 / 950 53 / 76 207 / 241 / 276 191 / 222 9,1BHB-90 89 680 / 840 61 / 76 207 / 241 / 276 225 / 270 9,2BHB-110 112 680 / 850 76 / 95 207 / 241 / 276 298 / 349 9,4BHB-125 127 580 / 740 76 / 95 207 / 241 / 276 338 / 394 9,5BHB-160 164 460 / 580 76 / 95 207 / 241 / 276 448 / 514 9,8BHB-200 205 370 / 460 76 / 95 207 / 241 / 276 571 / 655 10,2BHB-250 254 290 / 370 76 / 95 207 / 241 / 276 706 / 802 10,6BHB-300 293 250 / 320 76 / 95 270 / 241 / 276 814 / 932 11,0BHB-400 409 180 / 230 76 / 95 172 / 189 / 207 949 / 1023 12,0BDR-200 204 470 / 560 95 / 114 207 / 241 / 276 554 / 644 15,9BDR-260 261 360 / 440 95 / 114 207 / 241 / 276 745 / 859 16,3BDR-300 300 320 / 380 95 / 114 207 / 241 / 276 842 / 972 16,6BDR-350 348 270 / 320 95 / 114 207 / 241 / 276 972 / 1107 17,8BDR-375 374 250 / 300 95 / 114 207 / 241 / 276 1085 / 1243 17,1BDR-470 465 200 / 240 95 / 114 172 / 207 / 241 1107 / 1316 17,8BDR-540 536 180 / 210 95 / 114 138 / 172 / 207 1034 / 1277 18,3BDR-750 748 130 / 150 95 / 114 103 / 138 / 172 1040 / 1390 19,7BDT-0300 300 320 / 380 95 / 114 207 / 241 / 259 819 / 955 20,2BDT-0375 374 250 / 300 95 / 114 207 / 224 / 241 1045 / 1127 20,8BDT-0470 465 200 / 240 95 / 114 172 / 224 / 241 1071 / 1390 21,4BDT-0540 536 180 / 210 95 / 114 172 / 207 / 241 1277 / 1525 21,9BDT-0750 748 130 / 150 95 / 114 172 / 207 / 241 1780 / 2090 23,3BDT-0930 929 100 / 120 95 / 114 138 / 172 / 207 1780 / 2141 24,4BDT-1050 1047 90 / 110 95 / 114 138 / 172 / 207 1915 / 2316 25,3BDT-1500 1495 60 / 70 95 / 114 103 / 121 / 138 2090 / 2316 28,3BDT-2100 2093 40 / 50 95 / 114 103 / 121 / 138 2661 / 3342 32,3

Page 16: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

17

Technical Data Type BMP – BMT

Type Displacement Shaft Speed Flow rate Pressure drop Torque Weightcont. / Inter. cont. / Inter. cont. / Inter. / peak cont. / Inter. (standard type)

V cc / rev n RPM Q ltr. / min p bar M Nm m kgBMP-050 50,9 1000 / 1200 50 / 60 140 / 175 / 225 90 / 105 5,4BMP-080 78,7 810 / 960 65 / 75 140 / 175 / 225 140 / 175 5,6BMP-100 98,9 650 / 770 65 / 75 140 / 175 / 225 180 / 215 5,8BMP-125 123,6 520 / 600 65 / 75 140 / 175 / 225 225 / 275 5,9BMP-160 158,5 400 / 480 65 / 75 140 / 175 / 225 290 / 355 6,2BMP-200* 197,8 325 / 385 65 / 75 120 / 175 / 225 295 / 425 6,5BMP-200** 197,8 325 / 385 65 / 75 115 / 140 / 225 280 / 425 6,5BMP-250* 247,2 250 / 320 65 / 75 105 / 140 / 180 325 / 435 6,8BMP-250** 247,2 250 / 320 65 / 75 95 / 125 / 160 295 / 410 6,8BMP-320* 316,9 210 / 245 65 / 75 75 / 125 / 160 300 / 465 7,4BMP-320** 316,9 210 / 245 65 / 75 70 / 100 / 160 280 / 390 7,4BMR-050 51,8 775 / 970 40 / 50 140 / 175 / 225 100 / 130 5,6BMR-080 81,4 750 / 940 60 / 75 140 / 175 / 225 160 / 200 5,8BMR-100 103,7 600 / 750 60 / 75 140 / 175 / 225 200 / 240 6,0BMR-125 125,9 475 / 600 60 / 75 140 / 175 / 225 250 / 300 6,1BMR-160* 162,9 375 / 470 60 / 75 140 / 175 / 225 320 / 380 6,4BMR-160** 162,9 375 / 470 60 / 75 120 / 175 / 225 270 / 380 6,4BMR-200* 203,6 300 / 375 60 / 75 120 / 175 / 225 330 / 450 6,7BMR-200** 203,6 300 / 375 60 / 75 105 / 140 / 225 290 / 390 6,7BMR-250* 251,7 240 / 300 60 / 75 100 / 140 / 225 360 / 470 7,0BMR-250** 251,7 240 / 300 60 / 75 80 / 110 / 225 300 / 380 7,0BMR-320* 325,8 190 / 240 60 / 75 80 / 125 / 210 350 / 510 7,6BMR-320** 325,8 190 / 240 60 / 75 65 / 90 / 210 280 / 380 7,6BMR-400* 407,2 170 / 200 70 / 75 60 / 85 / 135 330 / 460 8,2BMR-400** 407,2 170 / 200 70 / 75 50 / 75 / 135 275 / 410 8,2BMD-050 51,8 775 / 970 40 / 50 140 / 175 / 225 100 / 130 8,5BMD-080 81,4 810 / 940 70 / 75 140 / 175 / 225 160 / 200 8,7BMD-100 103,7 650 / 750 70 / 75 140 / 175 / 225 200 / 240 8,9BMD-125 125,9 520 / 600 70 / 75 140 / 175 / 225 250 / 300 9,1BMD-160* 162,9 400 / 470 70 / 75 140 / 175 / 225 320 / 380 9,4BMD-160** 162,9 400 / 470 70 / 75 120 / 175 / 225 270 / 380 9,4BMD-200* 203,6 325 / 375 70 / 75 120 / 175 / 225 330 / 450 9,6BMD-200** 203,6 325 / 375 70 / 75 105 / 140 / 225 290 / 390 9,6BMD-250* 251,7 250 / 300 70 / 75 105 / 140 / 225 360 / 470 9,9BMD-250** 251,7 250 / 300 70 / 75 80 / 110 / 225 300 / 380 9,9BMD-320* 325,8 210 / 240 70 / 75 75 / 125 / 210 325 / 510 10,5BMD-320** 325,8 210 / 240 70 / 75 65 / 100 / 210 280 / 420 10,5BMD-400* 407,2 170 / 200 70 / 75 60 / 100 / 135 330 / 535 11,1BMD-400** 407,2 170 / 200 70 / 75 50 / 75 / 135 275 / 400 11,1BMS-080 81,4 810 / 1000 65 / 80 175 / 210 200 / 240 10,2BMS-100 103,65 750 / 900 75 / 90 175 / 210 250 / 300 10,5BMS-125 125,9 600 / 720 75 / 90 175 / 210 320 / 380 10,8BMS-160 162,9 470 / 560 75 / 90 150 / 210 340 / 480 11,2BMS-200 203,6 375 / 450 75 / 90 140 / 175 400 / 500 11,6BMS-250 251,7 300 / 360 75 / 90 125 / 155 450 / 540 12,1BMS-320 325,75 240 / 285 75 / 90 120 / 140 540 / 630 13,0BMT-160 161 625 / 780 100 / 125 210 / 240 475 / 540 18,9BMT-200 201,3 625 / 750 125 / 150 210 / 240 585 / 700 19,4BMT-250 251,6 500 / 600 125 / 150 210 / 240 745 / 870 20BMT-320 326,1 380 / 460 125 / 150 210 / 240 960 / 1120 20,9BMT-400 410,7 305 / 365 125 / 150 180 / 240 980 / 1230 21,9BMT-500 524,4 250 / 290 125 / 150 150 / 205 1020 / 1240 22,9

* = shaft cylindres Ø 32 mmcont. = continuousInter. = Intermittent (max. 10 % of the duty cycle)Peak = 1% of the duty cycle

** = shaft cylindres Ø 25 mm

Page 17: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

18

Radial Piston Motors Type BB

High starting torque (84%)No run out even at low speedMotors can be engaged / disengaged while under loadAutomatic free wheel and two speed motors as standardDirect wheel mounting

Technical Data

Type Displacement Peak Pressure Working Pressure Torque NM Power Speed

cc/U (= Size) bar bar (up to 250 bar) (up to 300 bar*) kW R.P.M.

BB250 250 350 300 935 1120 25 400

BB315 315 350 300 1180 1415 25 320

BB400 400 350 300 1495 1790 25 250

BB500 500 350 300 1870 2245 35 300

BB630 630 350 300 2355 2825 35 240

BB800 800 350 300 2990 3590 35 185

BB1000 1000 350 300 3740 4490 50 200

BB1250 1250 350 300 4675 5610 50 160

BB1600 1600 350 300 5985 7180 50 125

BB2000 2000 450 400 7500 11950 90 175

BB2500 2500 450 400 9350 14940 90 140

BB3150 3150 450 400 11780 18820 90 110

BB4000 4000 450 400 14965 23900 130 125

BB5000 5000 450 400 18700 29800 130 100

BB6300 6300 450 400 23570 37600 130 80

Operating Temperature °C - 45 to + 75

Viscosity mm2/s 20 to 50

Viscosity Index Vi min 100

Contamination Level max. Class 10 to NAS 1638

Fluid HLP Mineral Oil to DIN 51524 Part 2 and SAE-HD Motor Oil

Mounting Piston any

Page 18: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

19

Outline dimensions

Description

The hydraulic oil from the inlet is fed over the distributor plate to the pistons, which execute apower stroke. The oil pushes the pistons radiallyoutwards, so that the cam cylinders attached tothe pistons press against the cam ring which isfirmly attached to the motor housing, thereby forcing the motor housing, as well as the oil distributor, to rotate.As soon as the piston reaches the end of its powerstroke the rotating oil distributor closes the inletopening and opens the outlet. The piston is thenpushed back through the cam in the cylinder andthe oil flows away through the return piping. The change in rotational direction of the motor iscarried out by changing over the inlet flow direction. This can also be done during operationand without stopping.

Displacement Weight1 Min. A B Ø C Ø D Ø E Ø F G H Ø I J

cc/U kg Rim mm mm mm mm mm mm mm mm mm max.mm

size

125 / 160 / 200 17 9 198 184 195 140 6 x M 12 x 1,5 96,3 130 - 192 222 190

250 / 315 / 400 32 11 243 227 234 170 8 x M 12 x 1,5 129,9 150 364 243 275 279

500 / 630 / 800 50 13 280 262 282 205 6 x M 18 x 1,5 160,8 165 420 280 334 300

1000 / 1250 / 1600 85 15 312 279 345 275 8 x M 20 x 1,5 220,8 200 469 342 395 240

2000 / 2500 / 3150 145 18,5 340 325 420 335 10 x M 22 x 1,5 280,8 240 475 - - -

4000 / 5000 / 3150 270 - 402 377 520 425 12 x M 22 x 1,5 370,8 300 510 - - -

Distributor

Cam ring

Cam cylinder

Piston

Cylinder

Housing with drum brake

Standard Housing

Housing withdisc brake

Page 19: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

20

Monoblock Directional Control Valves Type HDM

Lever controlElectro hydraulic on/offParallel and series circuitsUnload in neutral,high pressure carryoverAncillary Valves:shock- and anticavitation valves, shock valves, check valves

Technical Data

HDM 140 HDM 11 P HDM 11 S HDM 18 HDM 19

Number of spools 1 2 - 6 1 - 6 1 - 4 1 - 3

Flow rate l/min 40 45 45 70 70

Inlet pressure max. bar 320 400 300 400 320

Return pressure max. bar 30 30 30 30 30

Fluid Mineral Oil to DIN 51524

Operating temperature °C - 20 to + 80

Viscosity range mm2/s 16 to 75

Filtration µ 30

Directional valve

Operator Lever / cable control / electro hydraulic (on/off) / electro hydraulic proportional

Spool types (standard)

Ancillaries Pressure valve / shock valve / anticavitation valve / shock and anticavitation valve

Circuits Parallel (standard) / series / power beyond

= A = G= C

= Z= S

Page 20: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

21

L O

Dimensions

System description

A B C E F G P T A + B

HDM 140* 35 85 0 187 53 87 M 18 x 1,5

HDM 11 P 51,3 28,6 x S + 128,6 28,6 180 57 66 M 18 x 1,5 / 3/8“ BSP

HDM 11 S 53,0 36 x S + 111 36 180 67 66 M 18 x 1,5 / 3/8“ BSR 1/2“ BSP

HDM 19 contact Bucher Hydraulics

HDM 18 60 40 x S + 115 40 216 72 73 M 18 x 1,5 oder 1/2“ M 22 x 1,5 M 22 x 1,5

Lever Lengths Lo

HDM 140 150 200 250 300 -

HDM 11 150 200 250 300 -

HDM 19 - 185 250 300 350

HDM 18 - 185 250 300 350

S = Number of spools -1

* Single section valve only

The valves of the HDM range are compact monobloc valves, available in 4 sizes. With thecombination of different directional valves, stops,operators and shock- and/or anti-cavitation valvesvalves* this monobloc is adaptable to any requirements. The HDM valves are available with open centre,high pressure carryover or closed centre operation.

* Only with HDM 11 S, HDM 19

Page 21: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

22

Directional Control Valve Type HDS

Lever operationElectrohydraulic on/off and proportional operationOpen centre, closed centre andhigh pressure carryoverShock, anticavitation andcombined shock and anticavitation valvesPilot operated check valvesPriority flow control valves

Technical Data

HDS 11 HDS 15 HDS 19 HDS 20 HDS 30

Number of spools 1 - 10 1 - 10 1- 10 1 - 10 1 - 10

Flow rate l/min 45 60 70 80 120

Inlet pressure bar 320 320 320 320 320

Return pressure max. bar 30 30 30 30 30

Fluid Mineral Oil to DIN 51524

Operating temperature °C - 20 to + 80

Viscosity range mm2/s 16 to 75

Filtration µ ≤ 30

Directional valve

Operator Lever / joystick for 2 valves / cable control / hydraulic or pneumatic on/off

electro hydraulic (on/off) / electro hydraulic proportional

Spool types (standard)

Ancillaries Pressure / shock / anticavitation / shock and anticavitation / proportional flow control

pilot operated checks / pressure control

Circuits Parallel (standard) / series / power beyond / load sensing

= A = G= C

= Z= S

Page 22: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

23

L O

Dimensions

System description

The HDS valve range represents a flexible unitconstruction, the elements of which may be combined into one valve unit as required. The valves are available connected in parallel and in series circuits.A typical valve unit comprises an inlet plate, the directional control valve sections and endplate.With all valves in neutral the flow returned to the tank (open centre). In addition high pressure carry over or closed centre circulation are available.

A B C D E F G P + T A + B

HDS 11 40 31,8 x W + 101,6 31,8 40 171 75 122 M 18 x 1,5

HDS 15 44 40 x W + 86 40 21 179 88 115 M 18 x 1,5

HDS 19 contact Bucher Hydraulics

HDS 20 40 40 x W + 100 40 40 252 106 121 M 22 x 1,5 or 3/4“ M 18 x 1,5 or 1/2“

HDS 30 50 44 x W + 124 44 50 262 113 126 1“ 3/4“

Lever Length Lo

HDS 11 150 200 150 300 - -

HDS 15 - 185 250 300 350 -

HDS 20 - 185 250 300 350 -

HDS 30 - 185 250 300 350 -

HDS 19 - 185 250 300 350 -

W = Width of directional sections (max. 10 sections per control block)

Page 23: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

24

Directional Control Valve Type L.8S

Electrohydraulic proportional controlLoad Sensing capability Wide range of functionsVarious inlet sections to allow operation with all types of pumpLoad independent flow control in parallel operationFlexible range for constructing a mobile hydraulic using a modular concept

Systems Data

Nominal flow l/min max. 150Flow rat, port A + B l/min max. 90Inlet pressure, port P + D bar max. 315Inlet pressure, port A + B bar max. 315Pear pressure, max. 10 sec/min bar max. 330Return pressure bar max 200Fluid Mineral oil to DIN 51524Fluid temperature range °C –20 bis +80Viscosity range mm2/s 10 bis 380Oil cleanliness NAS 1638 class 9,

ISO/DIN 4406 class 20 / 17 / 14

Directional valve

Operator Lever / cable operation / on/off solenoid and proportional solenoid, directly and pilot operated

Pneumatic and hydraulic controls

Voltage 12 and 24 V D.C. (all usual plug/socket are available)

Spool types

Function sections 2 way press. comp. / 3 way press. comp. / individual press. comp. / priority pressure compensation /

malt: way pressure compensation / over centre valves

Shock valves / pressure compensated flow control / manual override / flow pilot valve / closed loop flow control

Page 24: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

25

Dimensions

System description

The L.8S valve range represents a flexible unitconstruction, the elements of which, according torequirements and application, may be combined inone valve unit. A typical valve unit working with aconstant flow pump contains a three-way pressurecompensator directional control valves and therequired end plate. The pump may be attached tothe unit by any hydraulic connection.With all of the directional valves in the neutralposition the three way compensator unloads totalinput flow to tank at virtually no pressure drop.When one of the directional control valves isactuated the consumer pressure is transmitted tothe three-way pressure level via the control channel. This maintains the pressure drop between the pressure- and control gallery insidethe unit, so that the flow to the consumer isalways constant irrespective of load.A simple control element permits selective engagemant combined with a constant or LSpump.

Block length dimension “L“ in mm =

No. of directional valves x 37.5 + No. ofpressure sections x 50 + 36 + 35 (Inletsection without pressure function).

Individual drawings are available for special blockassemblies.

Port threads:

Work ports A + B M 18 x 1,5Pressure P M 22 x 1,5Return T M 22 x 1,5Pressure carry over D M 22 x 1,5Load Sensing LS M 14 x 1,5

Directional valve LA8S

Manual over-ride

Top mounted valveLU08PET

Inlet section LU8SCS with3 way pressure compensator

Directional valve LM8S, LP8S

Bottom mounted valveLU08SK

Endplate

Directional valve LA8S

Directional valve LM8S, LP8S

Inlet plate LU08SCS with3 way pressure compensator

Page 25: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

26

Proportional Directional Control Valve Type LV

The flexible modular system enables thesetup to be adapted perfectly to the re-spective applicationA load-independence will be achieved byindividual pressure compensators whichare asigned to each proportional directio-nal control valve (load-sensing)Individual pressure compensator andindividual adjustable primary pressurerelief

Systems data

LV 16 LV 22

Flow rate, A and B l/min 180 330

Inlet pressure bar max. 350

Return pressure bar max. 50

Fluid Mineral oil to DIN 51524

Operating temperature range °C - 20 to + 80

Viscosity range mm2/s 10 to 380

Filtration nach ISO 4406 class 18/15

Directional valve

Operator electrical piloted proportional, hydraulical, combination electrical

Voltage 24 V D.C.

Spool symbols

Function sections 2 way pressure compensator / 3 way pressure compensator / Individual pressure compensator

(over center valve / load control valve / shock valve / pressure compensated flow control / manual override

on request)

"A" "B" "C"

"D" "K" "L"

PT T

BA

PT T

BA

PT T

BA

PT T

BA

PT T

B

PT T

A

Page 26: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

27

Y

P

TXL

FI

DUE2

B1A1 MP

DUE1

DBV1

MT

DUE7

DUE4

DUE1

DUE8

DUE5

DUE2

RV1 RV2

RV4 RV5

D1 D2

D4 D5

X

MX

30 bar

DUE0

DM

DBV2

Endmodul "X"

2-fach-Zwischenmodul "Y"

Eingangsmodul "L"

A2 B2

a1 b1 a2 b2

max. 50 bar

Dimensions

Circuit diagram

Example of a valve with inlet module, two actuator sections with primary pressure relief for “A” and “B”, electrical piloted andend module.

170 mm

365 mm

$%! 2$%! -

133 mm

' (3%+"

4""4#5%!"&"$

4""4#5%!"&"

' 67# %+##

((

8

((

## $%! -,

$%! -

$%! 2

"#

((

%#1((

' 67# %+##

4""4#5%!"&"

4""4#5%!"&"$

' (3%+"

1((

8

((

%#

(

(

Type LV 22

Type LV 16

145 mm 215 mm

175

mm

135

mm

173

mm

ca.

215

mm

ca. 415 mm

port Y

solenoid a solenoid b port XL

adjustment of the individualpressure compensator

stroke limitation of the mainspool for the connection P-B

adjustment of the individualpressure compensator

stroke limitation of the mainspool for the connection P-B

adjustment of the primarypressure relief

adjustment of the primarypressure relief

port MX

170 mm

365 mm

133 mmport Yport MX

stroke limitation of the mainspool for the connection P-A

Inletmodule “L“

2-fold-modular plate “Y“

End module “X“

stroke limitation of the mainspool for the connection P-A

Page 27: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

28

Proportional Directional Control Valve System

Load sensing capability may be usedwith all types of pump in systems withvarying flow requirements irrespective ofload even when used by several receivers simultaneouslyA flexible concept, especially designedfor use in mobile hydraulics

Sectional body type SV...Technical Data System description

12 SV 18 SV 25 SV

Flow rate l/min 100 200 450

Inlet pressure bar 350

Return pressure bar 50

Fluid Mineral Oil to DIN 51525

Operating temperature range °C - 30 to + 70

Viscosity range mm2/s 3 to 380 (1000)

Filtration see table

Directional valve

Operator Lever

Hydraulic Proportional

Electric Proportional

Voltage 12 or 24 V D.C.

Spool types

A =

AB

PT

B =

AB

PT

F =

AB

PT

G =

AB

PT

C =

AB

PT

D =

AB

PT

K =

B

PT

L =

A

PT

Standards for operational reliability and service life.

Low High

ISO 4406 Class 19/16 Class 16/13

NAS 1368 Class 10 Class 7

Filtration to ISO 4572 ß25 > 75 ß10 > 75

These proportional valves control the rate of flow tothe receiver irrespective of load, because there is a 2-way pressure compensator integrated into eachdirectional control valve. In addition each directionalvalve contains pressure relief functions individuallyadjustable for each receiver. The valve system comprises 2 to 9 single sections,held together by tie bolts. A pump inlet section, 1 to 7direction valves and an end section form the valvebank. All proportional directional control valves have internalload signals for the accompanying 2-way pressurecompensator. The highest load pressure signal is conducted via check valves to the pump inlet section.

Page 28: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

29

Monoblock body type MU...Technical Data System description

8 MU 12 MU 18 MU 25 MU

Flow rate l/min 50 100 200 450

Inlet pressure bar 350

Return pressure bar 50

Fluid Mineral Oil to DIN 51525

Operating temperature range °C - 30 to + 70

Viscosity range mm2/s 3 to 380 (1000)

Filtration see table S. 24

Directional valve

Operator Lever

Hydraulic proportional

Electric proportional

Voltage 12 or 24 V D.C.

Spool types

Sub-plate mounted type PV...Technical Data System description

8 PV 12 PV 18 PV 25 PV

Flow rate l/min 50 100 200 400

Inlet pressure bar 350

Return pressure bar 50

Fluid Mineral Oil to DIN 51525

Operating temperature range °C - 30 to + 70

Viscosity range mm2/s 3 to 380 (1000)

Filtration see table S. 24

Directional valve

Operator Lever

Hydraulic proportional

Electric Proportional

Voltage 12 or 24 V D.C.

Spool types see Monoblock

These monoblock construction valves control flow tothe receiver irrespective of load. All principle functions of the valve are integrated inone compact unit. They consist of the pump inlet section with pressure compensation and up to fourproportional directional control valve sections. Byusing internal pressure signals selected directionalcontrol valves proportionally control flow irrespectiveof load.All directional control valves may be operate simultaneously, but only the flow rate of the receiverwith the highest pressure is controllable irrespectiveof load.The methods of operation available - manual, hydraulic, electric or any desired combination - andthe options with the different pump connection sections with pressure compensation in 2- or 3-wayoperation or pressure valve - offer a wide scope ofapplications relief.

G =

AB

PT

C =

AB

PT

D =

AB

PT

K =

B

PT

L =

A

PT

A =

AB

PT

B =

AB

PT

F =

AB

PT

Page 29: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

30

Solenoid Operated Directional Valves

Flow rate Nom Pmax Series and brief description Symboll/min Size

Direct-acting Poppet Valves

W2N… are direct-actuated poppet-typevalves in 2/2, 3/2, 3/3 or 4/3 (4/4) func-tion with ultra-low leakage when closed.Closed crossover models also available.

EEx-W1/W2...6 mm/ISO size 3 valvesactuated by hazardous-area solenoids(protection class EEx me II T4).

Direct-acting Spool Valves

WEDA… WEDO… WEDS... WEDE… areconventional, direct solenoid-operated,spool valves with normal 4/2 and 4/3functions. Certain models can be suppliedwith an externally-adjustable spool-speedcontrol to ensure «soft» spool change-over.

EEx(d)-WED… are size 3 valves with hazardous area solenoids (ProtectionClass EEx em II T4). Note that max.hydraulic ratings are less than those ofconventional valves.

Two-stage Spool Valves

WEVDK… are ISO size 3 High-Perform-ance valves featuring «spool-within-a-spool» design – see bottom of page 13 fordetails of function.

WEVDE… are ISO size 5 High-Perform-ance valves . The «spool-within-a-spool»design (see bottom of p. 13) enables valvesto be controlled by lower-powered sole-noids.

EEx(d)-WEV… are spool-within-a-spoolHigh Performance valves with hazardousarea solenoids. (Protection Class EEx em IIT4; or EExd II CT4...6.

WVRA… are Proportional solenoid-con-trolled valves with «spool-within-a-spool»pilot operation, without spool-positionfeedback. They give good performance inmedium- to high-pressure (315 bar)systems and where asymmetric flow pathsexist.

ISO

440

1-02

-02

Siz

e 2

DIN

243

40A

6A

10IS

O/C

ETO

P 3

, 5

NFP

A D

03,

D05

30 4 250

40 6 315-80

120 10 315

18 6 160-60

100 6 315

160 10 315

690 10 315

10 6-160 10 315

20 6 315

20 6 315

Page 30: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

31

Directional Valves – Miscellaneous

Pmax Series and brief description Symbol

Two-stage Spool ValvesThe «High-Performance Spool Valve» Principle. The main spool (2)contains within it a small 5 mm dia. pilot spool (3). This combination ofdirect and pilot actuation produces a self-regulating hydraulic amplifi-cation of the spool actuating force, in both the offset and recenteringdirections. The pressure existing at P is directed by the pilot spool to oneor other end of the main spool, thus producing a hydraulic force whichassists either the solenoid or return spring, as appropriate.This force amplification means that the High Performance Spool Valveis largely unaffected by Flow rate, asymmetry of flow paths, long periodsof energisation, high viscosities or very large pressure drops. It is ideallysuited to all applications which require extremely high reliability ofON- and OFF switching. Also, in many situations an High PerformanceSpool Valve can be «designed in» in place of a much larger valve.

Adapter- and Subplates, and Accessories. For modular stackingassemblies (horizontal or conventional vertical stacks) we offer a widerange of both industry standard components in ISO Sizes 2, 3, 5, 7 andspecial components covering the same flow ranges. On request, we cancombine these with the required valves to build complete, compact,functioning assemblies.

These are some examples of our very widerange of directional valve variants, many ofwhich were designed for specific customerrequirements.

WHH…6 hand-lever controlled valve, ISOSize 3, with precision metering in thecross-over condition. Spool is spring cent-red, or detended.

WHGA… steering selector valve in rotarydesign featuring very large overlaps.Application – controlling 2 axles in 4 stee-ring modes: front only; rear only; both – cir-cular; both – crab. Valves can be suppliedto meet particular requirements e. g. withintegral check- and relief valves.

WOFA… automatic reversing valve, 4/2function. No reversal point pressure settingrequired. Pre-defined direction of cylin-der movement when pump is started.

DIN

243

40A

6A

10IS

O/C

ET

OP

3, 5

NF

PA

D03

, D

05

40 6 315

30 6-80 10

210

20 5 210

Nom Size

Flow ratel/min

Page 31: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

32

Directional Control Cartridge Valves – Solenoid Operated

Nom Pmax Cavity Series and brief description SymbolSize

The 3/4”-16 UNF cartridge program(available also with M20x1,5m thread)Except for type WR22, the followingmodels are all of direct-acting design andfeature the proven principle of sealed coretube and slip-on coil.

WKD22… are 2-stage 2/2 directional val-ves with seat type main stage and slidingspool pilot and are available in normallyopen or closed designs. The cartridgesfeature compact installation and excellent∆p/Q values

30 5 250 ALALM

40 5 350 ALALM

AL30 5 250 AM

AN

20 6 315AAABACAD

20 6 250

140 10 210 DC(315) DD

W1C… W1D… are direct-operated 2/2and 3/2 cartridge poppet valves. Thedual-poppet design enables bidirectionalpressure sealing and flow. Also availablewith closed crossover. WK… is a direct-operated 3/2 cartridgespool valve. Available as «deenergised1–2 blocked» and «deenergised 1–2open». WS22G... / WS22O… are 2-stage 2/2directional valves with seat-type pilot andmain stages and are available in normallyopen or normally closed designs. The car-tridges give a leak-free seal in both direc-tions of flow.WR22G... / WR22O... are 2-stage 2/2 car-tridge check valves with solenoid override.With seat-type pilot and main stages, theyare available in normally open or closeddesigns

WK22…, WK32… and WK42… are car-tridge spool valves for 2/2… 4/2 functionsand have push solenoids.WK43… for 4/3 functions has a dual-stroke solenoid.

WR22… are 2/2 cartridge check valveswith a solenoid override.Normally open or normally closed.

WS22… are 2/2 normally open or closedcartridge poppet valves which give a leak-tight seal in both directions.

250 16 250 EB

140 10 400 DJ

WSD22L… are screw-in ‘logic valves’, or2/2 directional cartridge valves. Controlledby a hydraulic pilot signal, they featurecompact installation and excellent ∆p/Qvalues and are available with optionaldamping

Flow ratel/min

Page 32: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

33

Pressure Control Cartridge Valves – Manually Adjusted

Pmax Cavity Series and brief description Symbol

DPA-3… are low-flow direct-operated pop-pet valves. Primary uses: pilot control,miniature hydraulic systems.

DDPA-1L… direct acting seat relief valvewith mid-range damping. Intended forsecondary relief protection of leak-tightservice lines, and for shock protection.

DDPB-1C… direct acting seat relief valvewith mid-range damping. Intended forsecondary relief protection of leak-tightservice lines, and for shock protection.

DDPB-3D… as above, but spring cham-ber externally drained. Pressure settingis unaffected by back pressure at port B.

Actuators : for the new generation of cartridge, as well as for thecurrent range, we offer 3 different adjuster styles.

6512 3 210 DA

315

2040

30 4 100 AL160250

140 10 100 DC240350400450

DD

2 30 AM: 60

10010 4 160-20 250

DDRB-7M… are low leakage direct acting3-way pressure reducing cartridges, desi-gned for flow rates up to 20 l/min. Pressureranges: 30/60/100/160 and 250 bar.

DRP (A)… models are 2-way pilot opera-ted pressure reducing valves with internalpilot supply from A. The external pilot drainshould not be subjected to back pressure.

DDPDB… direct acting pressure relief car-tridge valve with dual action i.e. pressurecan be relieved from A to B or from B to A.

DVP (A)… are pilot-operated, spool type,pressure relief valves available in 3 versi-ons: internal pilot drain via B, external pilotdrain or external pilot supply.

10 315 DD DWDPA-2D... hydrostat cartridge valvesfor Bypass function, with adjustablehydrostat spring but without integral pres-sure relief function.

80 10 315 DD-140 DWVPA-2... hydrostat cartridge valves

for Bypass function, with fixed hydrostatspring and integral, adjustable, pressurere-lief valve.

10 315 DD DWDPA-5D... hydrostat cartridge valvesfor In-line function, with adjustablehydrostat spring.

10 65 DE16 210 DD

315250

100240

140 10 350 DD400450

65 DC140 10 210 DD

16 315 DE

Nom Size

Flow ratel/min

Page 33: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

34

Pressure Control Cartridge Valves – Solenoid Operated

Nom Pmax Cavity Series and brief description SymbolSize

WUP-1… Direct solenoid operated pressu-re relief valve, principally for pilot- and low-flow duties. 2 versions available: energised= pressure on; de-energised = pressure on.For pressure adjustment, see WUVP…below.

WUVP… in sizes 10 and 16 are 2-stagesolenoid controlled pressure relief valves in3 versions: internal pilot drain to B (reliefvalve); external pilot drain (sequencevalve); auxiliary control port (remote controlversion). An important feature is the dualpressure setting capability; 2 pressurelevels corresponding to «energised» and«de-energised» are mechanically pre-set –the valve then «switches» between these 2levels.

WDRVP ...-5… in sizes 10 and 16 are 2-way, 2-stage, solenoid controlled pressurereducing valves with internal pilot supplyfrom A. The external pilot drain should notbe subjected to back pressure. For dualpressure adjustment and control – seeWUVP… above.

DBDRB... are proportional, direct operat-ed, pressure relief valves. DDRRZ… areproportional, 3-way, direct operated pres-sure reducing valves intended for low-flowservice, such as pilot control.

DVPRA… in sizes 6, 10 and 16 proportio-nal, 2-stage, pressure relief valves andDRPRA… (also sizes 6, 10, 16) are propor-tional, 2-stage, pressure reducing cartrid-ges. All versions feature: compact design;high power/weight ratio; 5 pressure ran-ges; same cartridge recesses as for manu-al- and solenoid operated pressure controlcartridges.

The same cartridge elements are used in manifold blocks; line- and manifold mounting valves; modular mountingvalves.

1 3151-12 1,2 210 DA

2,3 65

65120 10 210 DC

16 315 DDDE

10 65 DD120 16 210 DE

315

2 60: 100

6-24 4 160 DA

250 AF

300

6 DBZ60100

10 10 160 DD-100 250

30010 16 DE

-200

Flow ratel/min

Page 34: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

35

Flow Control Cartridge Valves

Nom Pmax Cavity Series and brief description SymbolSize

MDPCA.../MDPAA-… are throttle and/orshut-off semi-cartridge valves with minimalspace requirement. The mating valveseat is either machined in the controlblock or inside the DC cartridge body(cavity form tools are available). Pressuresto 315 bar.

RDB… are throttle/check semi-cartridgevalves. They are intended purely for use inmanifold blocks. The only difference be-tween the 6 and 10 mm models is in thedesign of the throttle sleeve.Pressures to 315 bar.

MRP-2D… are 2-way, screw-in, pressurecompensated flow control cartridges withadjustable hydrostats and a choice ofmetering orifices; Simple low-cost flowcontroller, with flow ranges of 6...9,8...13, 12...22, and 20...40 l/min.Pressures to 315 bar.

MVR-3D-10 is a 3-way priority flow controlvalve with a choice of 7 fixed orifice sizesfor flows from 0,5...19 l/min on port Z.

160 10 315 CA

160 610 315 DF

6- 640 10 315 DD

DC

Line- and stack mounting bodies are, ofcourse, available for our entire range ofcartridge valves.

60

19 10 315 MDD

2,5 315 DC-40 10 DD

MDRPA-... are direct acting proportionalthrottle cartridges. They are available in 6flow ranges from 2,5 - 40 l/min) and in nor-mally closed or normally open versions. Ifthe p (A - B) is at least 15 bar, theyfunction as pressure compensated controlvalves.

Flow ratel/min

Page 35: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

36

Cartridge Check Valves

Nom Pmax Cavity Series and brief description SymbolSize

RVE… are spring-loaded, plate-type,screw-in check valves in sizes G 1/8” to 1”.

RKVE… as above, but poppet-type. SizesG1/8” to G 1 1/2”.

RKVE…V… are screw-in poppet checkvalves with extended body for highercracking pressures. G 1/8” to G 1”.

RVC… like RVE… above, but slip-indesign. For assembly in threaded holesG 1/4” to G 2”, use series ESH… screw-inretaining bushings. Reversible.

RKVC… are also slip-in check valves, butwith guided poppet design.

WRVCG… are screw-in shuttle valves in 4nominal sizes from 4 mm to 10 mm (G 1/8” to G 1/2”)

ERVH… are extremely compact pilot-ope-rated check valves. Screw-in plate-typedesign, available in 5 sizes from 4 mm to16 mm (G1/4” to G 1”). Pilot ratio 3,5:1

RVSAE 3/6… are a new family of SAEcheck valves which clamp between portand flange and are self centred by 4 bolts.Auxiliary seal plates allow either directionto be chosen for free flow. In the no flowdirection leakage is near-zero as expectedof a good seat valve.

RVSAE 3… 210 bar (3000 psi)RVSAE 6… 420 bar (6000 psi)(Dual purpose bodies)

REPA-10 are pilot-operated cartridgecheck valves which ensure leak-free sea-ling from A1 to A.

REPNOA-16 (internal drain) and REPYOA-16 (external drain) are functionally identicalto the 10 mm size units described above.

REPYA-10; as above, but with externalpilot drain via Y. System pressure in A doesnot, therefore, act against the pilot pressu-re.

8 4to : 350 G”

360 40 (500)

8 4to : 350

360 40 (500)

8 4to : 350 G”50 10 (500)

8 4to : 350 G”80 16

150 1/2“to : 210 SAE

700 2“ 420

80 10 315 RC

160 16 315 REREY

100 10 315 RCY

Pat

ent

Nr.

3834

066

Flow ratel/min

Page 36: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

37

Solenoid Operated Stack Mounting Directional Valves

Nom Pmax Series and brief description SymbolSize

Single- and Multi-station StackingAssembliescan be supplied in ISO sizes 2, 3, 5 and 7

Customised control systems can be assembledquickly from the wide range of valve functions.

Cartridge elements, see pages 30–33

Venting Circuitry, (P, A or B to T) is avail-able in ISO sizes 3, 5 and 7 in direct actingand two-stage designs. Many variants canbe supplied, each in «energised-open» or«energised-closed» versions.

Straight-through Circuitry (P–P, A–A,B–B) is available in ISO size 3 (direct act-ing) and sizes 5 and 7 (two stage). Manyvariants can be supplied, each in «energi-sed-open» or «energised-closed» versions,and with or without by-pass check valve.

Cross-over Circuitry (A–B or B–A) is avail-able in ISO size 3 (direct- and pilot-opera-ted) and size 5 (pilot-operated only), in«energised-open» or «energised-closed»versions.

DIN

243

40A

6A

10A

16IS

O/C

ETO

P 3

, 5,

7N

FPA

D03

, D

05,

D07

20- 6250 10 210

16 (315)

20- 6140 10 210

(315)

Flow ratel/min

Page 37: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

38

Stack Mounting Pressure Control Valves

Pmax Series and brief description Symbol

Manually Adjusted

Manually adjusted stack-mounting pres-sure control valves with Venting, Straight-through or Cross-over function; pressurerelief, pressure reducing and sequencefunctions; with or without bypass checkvalve. A very wide range of models is avai-lable. Size 2 valves are direct acting, sizes3 and 5 are two-stage designs.

Solenoid Actuated

Solenoid actuated stack-mounting pres-sure control valves with Single- and DualPressure settings; with Venting, Straight-through or Cross-over function; pressurerelief, pressure reducing and sequencefunctions; with or without by-pass checkvalve. A very wide range of models is avai-lable.

Proportional-Solenoid Actuated

Proportional-solenoid actuated stack-mounting pressure control valves with Ven-ting, Straight-through or Cross-over func-tion; pressure relief, pressure reducingand sequence functions; with or withoutby-pass check valves. A very wide range ofmodels is available.

ISO

440

1-02

-02

Siz

e 2

DIN

243

40A

6A

10A

16IS

O/C

ET

OP

3, 5

, 7

NF

PA

D03

, D

05,

D07

2025 4 40

100160250

6580 6 210

315

100 65to 10 210

140 315

65250 16 210

315

6580 6 210

315

100 65to 10 210

140 315

65250 16 210

315

6010 6 100to 10 160

200 16 250300

Nom Size

Flow ratel/min

Page 38: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

39

Stack Mounting Flow Control Valves

Nom Pmax Series and brief description SymbolSize

Where practical, modular valves are designed to be used witha separate seal plate. This enables the valves to be mountedin either of 2 positions and with either of 2 correspondingfunctions. This feature can significantly reduce your spares-holding requirements.

Installing Size 3 and 5 Modules

Size 3 valve Size 5 valve

180° aboutLong Axis

180° aboutShort Axis

Note:P and T will be interchanged!

Note:A and B will be interchanged!

SD… are simple stack mounting throttlevalves. Function in P and T. For coarse,pressure dependent, flow regulation innon-critical applications.Pmax 315 bar.

SRD… are manually adjustable throttle val-ves with by-pass check valves and lockingnuts or screws. Function in A, B or A andB. Meter-in or meter-out, dependent onmounting (see below). The throttle valvefeatures a fine-control adjustment rangeand full flow is available in the free directionwithout bypassing the throttle.

Size 2 pmax 250 barSize 3 to 7 pmax 315 bar.

SM-2D… are 2-way pressure compen-sated flow control valves with adjustablehydrostats and a choice of metering orific-es. Flow ranges 6…9, 8…13, 12…22 and20…40 I /min. Function in P, A or B, with orwithout by-pass check valve.pmax 210 bar.

80 6 315

6- 640 10 210

25 4

80 6

160 10 250(315)

250 16

DIN

243

40A

6A

10IS

O/C

ETO

P 3

, 5

NFP

A D

03,

D05

ISO

440

1-02

-02

Siz

e 2

DIN

243

40A

6A

10A

16IS

O/C

ETO

P 3

, 5,

7N

FPA

D03

, D

05,

D07

2,5- 640 10

DIN

234

30 A

6 A

10 Proportional throttle stack valves are avai-lable as Bypass or Inline functions. Thethrottle cartridge allows flow in one direc-tion only - if the function is in the A or B lineof the stack valve, a reverse flow checkvalve is also provided.

Flow ratel/min

Page 39: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

40

Stack Mounting Check Valves

SRVA… are direct check valves with seatsmachined in the valve body. Function in Pand T higher cracking pressure availableas an option.

SNKA… are spool type counterbalancevalves for use in Negative Load situations.They operate in the T line but are control-led from the B line and automatically pre-vent uncontrolled runaway of negativeloads. No PRV function.

SNSA… are counterbalance valves actingin A, B or A and B. They ensure controlledlowering of negative loads, and leak-tightload holding. The area ratio is 4.5:1 or 3 :1.In overload situations the valve functionsas a pressure relief valve.

SRV… are direct check valves with sepa-rate slip-in, invertable, CV elements typeCRV… . Bodies are available with normalP, A, B and T drillings (customer machinesstraight-through bore for C.V. sleeves) orcompletely finished for function in P or T.

25 4 250

60 6 350

120 10 350

25 4 250

60 6 315

120 10 315

ISO

440

1-02

-02

Siz

e 2

ISO

440

1-02

-02

NG

4D

IN 2

4340

A6

A10

ISO

/CE

TOP

3,

5N

FPA

D03

, D

05IS

O 4

401-

02-0

2 S

ize

2D

IN 2

4340

A6

A10

A16

ISO

/CET

OP

3, 5

, 7N

FPA

D03

, D05

, D07

SREA… are single-stage pilot operatedcheck valves with function in A, B or A andB. Main use: leak-tight sealing and load-holding when situated between cylinderand open-centre directional valve.The area ratio is 3,3:1.

SRE… SREZ… are two-stage pilot operat-ed check valves functioning in A, B or Aand B. Main use: Leak-tight sealing andload-holding, when situated between cyl-inder and open-centre directional valve.The area ratio of at least 6:1 ensures agentle opening action.

25 4 250

25 6to 10 315

250 16

Nom Pmax Series and brief description SymbolSize

DIN

243

40A6

A10

ISO

/CET

OP

3, 5

N

FPA

D03

, D05

Flow ratel/min

Page 40: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

41

Special-Purpose Valves in System Solutions

Nom Pmax Series and brief description SymbolSize

RB… is a hose-burst / load lowering valvewith metering characteristics matched tothe main directional valve. It complieswith modern safetyrequirements.

FBVG… a motor-mounted bidirectionalbrake valve for open loop motor drives.

REFUVA.... is a load lock valve for con-struction machinery with optimised ∆pvalues when lifting and lowering.

Pilot Control Circuit on ConstructionMachineryCompact, customer-specific, control blockwith integral Pressure Control Valve, 3/2spool-type Cartridge Valves, Check Valve,Accumulator and Filter. Supplies all pilot oilrequirements and controls Travel- andSlew Brakes.

2-Speed Heavy Duty Transmission con-trolOur HBGV units have been specially desi-gned to control 2-speed heavy duty trans-missions on construction machines. Theyare optionally available with integral pres-sure relief or pressure reducing valves inthe inlet.

The «VV» Stack Valve Systemfor 2/2, 3/2, 4/2 and 4/3 functions- Low-cost System- Spool and Poppet valves in same stack- High flow rates; spool valves to app.

40 I /min, Poppet valves to app. 20 l /min- Pressures to 315 bar (limited by individual

valve ratings)- 3/2 poppet valves (including closed cross-

over) can be incorporated- Additional functions can be incorporated in

stack (eg. Check Valve, pressure Reducer,Flow Control)

- «Slip-on» coil design permits coil changeswithout loss of hydraulic fluid

- ISO Size 3 adapter plate available- Valve function can be reversed by rotating

unit by 180° about vertical axis

1”SAE 420 300

3/4

3/4”25 350 3001”

40 30(250)

315 40

315 25(250)

High-performance GasTurbine control

Safety monitoring and emergency shutdown ofHigh-performanceGas Turbines.

Flow ratel/min

Page 41: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

42

Flow Measurement Devices and Electronic Amplifiers

Nom Pmax Series and brief description SymbolSize

QSB… extremely compact, bi-directionalflow meters based on a patented «Disc»principle. Available in HTF cartridge forms(DC), DD and DE. On-board electronicsproduce an analogue proportional signal inthe range ± 6 Volt. Changes in flow rateare signalled within milli-seconds there-fore this unit is well suited to closed-loop control systems.

EQP-01… are digital display meters for theabove QSB… units. The analogue input isconverted to a 3⁄-digit ± LED display.

SAN-135 is a single-channel PWM DCamplifier with ramps. SAN-227 is a 2-chan-nel PWM amplifier with ramps. All modelsare designed for proportional valve control,and are supplied in Eurocard form.

PBS-3A is a compact and low-cost, singlechannel, PWM amplifier for controllingProportional Valves. A potentiometer knoband scale-plate are situated on the frontcover. Stable, robust, adjustment. Internalpot. for Imin / Imax settings. Full scale(270°) control always available.

LRS is a power-reducing DIN plug for theranges 15–55V DC and 100–250 V DC. Atthe moment of switch-on, the full power(max. 40 W) is applied to the valve andshortly afterwards this is reduced to a pre-adjusted level eg. 10W. Modern electronictechniques allow this to be done without thepower-drop being dissipated as heat. Uses:power savings; limiting coil temperaturerise; permit deliberate but transient over-current condition.

10 1-60315

(420)16 4-150

5 160 AL DSVP… is a multi-functional ‘kick down’valve to control the ‘squeeze’ sequence inswaging and flaring machines.

Customer-specific ValveDevelopments

10 20 DC DFUA… cartridge valve for monitoringpressure filters. Bypass spool and electriccontacts are mechanically coupled ensu-ring ultra reliable operation.

10 100 DDDRPA...SMOT… is a pressure reducingvalve for pressure control on calendar rol-lers. It has motorised adjustment and on-board electronics for signal/feedbackcom-parision.

Cavity

Flow ratel/min

Page 42: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

43

Seat Valves Type SVH 04

Aluminium sections and monoblocksCan be combined with series L.08Direct operated 2/2 doubleseat valvesOn/off solenoid operationLeak free load holding control

Technical Data Outline dimensions

Nom. Flow l/min 20

Operating pressure max. bar 210

Temperature range °C - 20 to + 80

Viscosity range mm2/s 10 to 380

Max. Leakage mm3/min 4 (at 100 bar)

Recc. Filtration µ 25

Operation voltage V 12,24

Power W 27

Supply voltage D.C.

Rating % 100

Protection GDM 309

Stand-alone Monoblock

Available as single or double actingPort threads = M 14 x 1,5

Order code:Single section = SVH 04 M 1 N-OM14...Three sections = SVH 04 M 3 N-OM14...

Monoblock for use with L.08 Directional valveSVH 04 M 308 N-OM12...

Port threads = M 12 x 1,5

Emergency over-ride

Emergency over-ride

Sectional valves for use with SVH 04 monoblocks SVH04 2206 N-OM12...

1 or 2 seat valves per sectionPort threads = M 12 x 1,5

Emergency over-ride

Page 43: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

44

Seat Valves Type WS 03

Aluminium Monoblock bodiesDirect acting 3/2 poppet valvecombined with 2/2 seat valveOn/off solenoid operationLeak-free sealing for load holding

Technical Data Outline dimensions

Nom. flow l/min 15

Operating pressure max. bar 210

Temperature range °C - 20 to + 80

Viscosity range mm2/s 100 to 300

Max. Leakage mm3/min 4 (at 100 bar)

Recc. Filtration µ 25

Operation voltage V 12,24

Power W 12

Supply voltage D.C.

Rating % 100

Protection GDM 309

WSH 03 M3... WSH 03 M4... WSH 03 M5...

WSH 03 M2...

Page 44: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

45

Flow Dividers Type MTDA

Flow division and combiningAvailable with unequal outputsFlow division is virtually independant of pressure and viscosity

Technical Data Characteristics

Operating pressure max. bar 315

Temperature °C min. - 20 to max.+ 80

Viscosity range mm2/s min. 10 to max. 300

Q (l/min) Port and threadOrdering key Flow range P A + B

MTDA 08 - 004 M 2 - 4

MTDA 08 - 006 M 3 - 6

MTDA 08 - 008 M 4 - 8M 18 x 1,5

MTDA 08 - 012 M 6 - 12

MTDA 08 - 016 M 8 - 16

MTDA 08 - 025 M 12 - 25

MTDA 08 - 032 M 16 - 32

MTDA 08 - 050 M 25 - 50M 22 x 1,5 M 18 x 1,5

MTDA 08 - 075 M 37 - 75

MTDA 08 - 100 M 50 - 100

MTDA 16 - 100 M 35 - 100 M 27 x 1,5 M 22 x 1,5

MTDA 16 - 160 M 50 - 160

MTDA 16 - 200 M 62 - 200 M 33 x 2 M 27 x 2

MTDA 16 - 250 M 75 - 250

a b c d f g h Weights

MTDA 08 120 48 67 54 45 40 7 1,2 kg

MTDA 16 192 76 100 80 70 70 9,5 4,1 kg

Curves based on oil viscosity of 35 mm2/s (cSt)

Curves based on oil viscosity 35 mm2/s (cSt)

Operating flow ranges

Outline dimensions

Flow rate 16

Flow rate 08

Flow rate 16

Flow rate 08

Page 45: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

46

Priority Flow Control Valves Type MTKA, MTQA and MTCA

Manually variable or fixed flow MTKA: Residual flow is loadableMTQA: Priority flow with relief

valve residual flow not loadable

MTCA: Priority flow with reliefvalve residual flow loadable

MTKK: As MTKA function in stackable body

MTKL: Load-Sensing function

Technical Data

Outline dimensions (all parts are M 22 x 1,5 threads)

Type MTKA, MTQA, MTKK MTCAOperating pressure max. bar 315Nom. flow q l/min 70 80Accuracy % ± 5Pressure drop ∆ p bar 3,5 ... 5 4 .. 10Operating temperature range °C - 20 ... + 80Viscosity range mm2/s(cSt) 10 ... 300

Standard range

MTKA MTQA MTCA Dimensions for variable control version

Graduated 0 - 10max. rotation 329°

Detent version availableon request2,6 kg1,3 kg1,2 kg

Remote controlfor remote operation the flow control valvecan be fitted with an electric motor drive unit

Fixed constant flow

MTKA.. 3 l/min = 03

6 l/min = 06

MTQA.. 9 l/min = 09

12 l/min = 12

MTCA.. 16 l/min = 16

Other flow rates available on request

Adjustable constant flow

MTKA..

MTQA..

MTCA..

VA = 0 - 12 l/min

VB = 0 - 25 l/min

VC = 0 - 50 l/min

VD = 0 - 65 l/min

Order code: MT - M 08 (e.g. MTKA 03 - M 08)

Page 46: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

47

Flow Control Type SR3G

Electro hydraulic proportional controlLoad Sensing capabilityResidual flow is loadableAvailable as single section or multi-section valve blockEither 2 or 3 way flow control

Hydraulic parameters Electric parameters

Technical data Unit

Flow rate l/min 06, 10, 16, 25, 32,

40, 50, 63, 80, 100

max. operating pressure bar 315

max. input flow l/min 120

Leakage flow of zero setting cm3/min 100

Minimum pressure drop bar 6 - 11

(Pressure compensator)

Temperature range °C - 20 - + 80

Viscosity range mm2/s(cSt) 10 - 300

Recommended filtration µm 25 abs

2. Inlet section for sectional valve

Standard range

1. Single section

SR3GEB...

for constant pumps for L.S. pumps

SR3GEE... SR3GEC... SR3GEG... / 05SR3GED... / 05

SR3GOA...

for constant pumps for L.S. pumps

SR3GOE...SR3GOB... SR3GOD... SR3GOG...

SR3GEO...

End sections

SR3GEO.../02

Technical data Unit

Voltage V DC 12 or 24

Power W 17,4

Rating ED% 100

Protection IP 54

Response time ms 200

Electrical connection Plug DIN 43650

For SR 3 C single section valveplease see catalogue

T P TX P

Page 47: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

48

3. Intermediate plates for section valves

SR3GZB...

for constant pumps

SR3GZE...

SR3GZD...

for L.S. pumps

SR3GZH... / 12SR3GZG... / 12 SR3GZJ...

4. End plates for section valves

Order code

Outline dimensions

SR3GAA...

for constant pumps for L.S. pumps

SR3GAE... SR3GAB... SR3GAD... / 04 SR3GAF... / 04

SR3GAU...

no function

SR3GAW... / 02

S R 3 G - - 0 M 2 2

Port threads P/A/B = M22 x 1,5T = M26 x 1,5X = M14 x 1,5

1) Pressure port for SR3GE...Inlet section

2) Not for L.S. versions3) Only for SR3GA... end sections4) Only for SR3GE... single section

for L.S. operation

Z B 0 0 6 3 S G 1 2

Function type see sect. 1 - 4Operating voltageversion H = ***DC 12 Volt = G 12DC 24 Volt = G 24Neutral position closed = 0

Operating range e.g. 0-63 l/min = 0630-06 / -10 / -16 / -25 / -32 / -40 / -50 / -63 / -80 / -100 l/min

manual operation = Hwithout manual over-ride = Swith manual over-ride = T

3)

64 128 17529 7

6235

,5 229

4)

1) 123,4 7480

7043

21

2)

23,5

18 18

TT1

TB

A

P

TBA

P

T

A

P

T

A A

PX

T

PX

Page 48: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

49

Flow Control Valve Type SR3C

B

Cartridge bodyElectro hydraulic proportional controlResidual flow loadableAvailable as 2 or 3 way flow control

Hydraulic parameters Electric parameters

Technical data Unit

Nom. flow l/min 10, 16, 25,

32, 40, 50, 63, 80

Operating pressure max. bar 315

max. flow l/min 100

Leakage rate cc/min 100

Minimum operating pressure bar 5 - 8

(Pressure compensator)

Oil temperature range °C - 20 - + 80

Viscosity range mm2/s(cSt) 10 - 300

Recommended filtration ISO 4572 ß25 > 75

Dimensions Flow control valve

Technical data Unit

Voltage V DC 12 or 24

Power W 17,4

Rating ED % 100

Protection IP 65

Response time at 100 bar ms 100

Electrical output Plug DIN 43650

Operating temperature range °C -20 / + 80

2-way flow control 3-way flow controlP A P A

Page 49: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

50

Cavity dimensions

Order code

- / * Q = ...S R 3 C 5 0 S G 1 20

2 and 3 way flow control valve

Priority flow range

variable flow range (type S, T, N and A)0-10/-16/-25/-32/-40/-50/-63/-80 l/min = e.g. 50

variable flow range (type H) VA (0–12 l/min), VB (0–25 l/min), VC (0–50 l/min) = e.g. VBVD (0-65 l/min)

fixed flow rate (type F) = **

Operator solenoid = Ssolenoid + manual operation = Tsolenoid + override = Nsolenoid + manual operation + cover = Ahand operated = Hfixed flow = F

-

Modification Standard

Operating voltage DC 12 Volt = G12DC 24 Volt = G24

not required for version F = ***

/

Modification / special version (set by the factory)

*) Where applicable state fixed flow required in clear text.

Cavity for 2-way flow control valvedoes not include Port B.

Detail

Page 50: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

51

Differential Lock Valve Type MT..DV.

With two and three way flow divisionFlow dividing and combiningWith unequal flow division ratiosElectrical and hydraulic switching

Hydraulic parameters Electrical parameters

Technical data Unit NG08 NG16

Input flow Qmax l min -1 100 200

Nom flow l min -1 25, 50 120, 160

75, 100 200

Oper. pressure max bar 420

Pilot pressure

pst min - pst max bar 10 - 30

Viscosity range cSt 10 - 300

Fluid Mineral Oil to DIN 51524

Fluid temperature

range °C -20 to + 70

Divisions ratio 3) 1:1 bzw. 1:1:1

3) Other division ratios available on request

2 way differential valve MT..DV

Hydraulic switchingMT..DV...-*H-

Electro Hydraulic switchingMT..DV...-EH-

Nominal size: 08Solenoid for

electrical operation

Nominal size: 16

Solenoid for electrical operation

Technical data Unit

Voltage V DC 12 and 24

Power consumption W 30

Ratings ED% 100

Operating temperature max °C + 80

Coil temperature max °C + 140

Protection DIN 40050 IP65 4)

Electrical output Plug DIN 43650

4) with correctly assembled plug

Symbols Outline dimensions:

Optional compensating

orifice

145

140 14

5 6143 14

3

79

24

3373

58

Page 51: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

52

3 way divider MT...DVD

Order code

Hydraulic operationsMT..DV...-*H-

Electrohydraulic operationsMT..DV...-EH-

Size: 08

1) Mounting holes for SHCS M8DIN 912,

Inlet P M 27 x 2Outlet A, B, and C M 22 x 1,5Outlet X and T M 12 x 1,5

2) Solenoid for electrical operation

Size: 16

Inlet P M 33 x 2, flange SAE (3000 PSI) R 1/4“

Outlet A, B, and C M 27 x 2, flange SAE (3000 PSI) R 1“

Outlet X and T M 12 x 1,5

SAE Flanges see data sheet 414.08.116

Symbols: Dimensions:

M T D V - - Düse: 2)0 8 D 1 0 1 0 0 2 5 H 0 G 1 2E

NG = 08 or 16

3-way differential lock valves = D 1)

Division ratio A to (B + C) 1 : 1 = 101 : 1,5 = 15 etc.

Division ratio B to C 1 : 1 = 101 : 1,5 = 15 etc. 1)

Nom. flow e.g. 25 l/min = 025

Operation type hydraulic = *Helectrohydraulic = EH

Modification level

Supply voltage DC 12 Volt = G12DC 24 Volt = G24for pilot operation *H = ***

1) Only for three way dividers

2) State size of compensation orifice in text e.g. Ø 0,6 / 0,8 / 0,9 / 1,0 and so on.

2)2)

1)

Optio

nal c

ompe

nsat

ing

orifi

ce

Orifice: 2)

107

223

140

81

26

65

4853

303

220

202

184

60

26

118 8

5

Page 52: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

53

General description

– prevents a hydraulic actuator from running ahead of the available oil supply in the event of external driving forces i.e. negative, or over-running loads

– takes over the load control-, load holding- and safety functions– provides leak-free load holding in the neutral position– for sensitive control and precision movement of actuators under load– mounted directly on the hydraulic cylinder for the highest security against unintentional movements– for controlling the speed of hydraulic cylinders and motors, for example on cranes, lifting platforms, etc.

Advantages of the Cindy load control valve

– absolutely zero-leakage load holding– 420 bar working pressure with 3-fold safety– pilot operated load-control valve and bypass check valve both combined in one axis– Load does not accelerate in the event of a hose burst(with back pressure-independent models)– the opening action is almost entirely independent of the load pressure (area ratio 1:113)– above 100 bar load pressure, it controls like a compensated 2-way flow controller (patented follower principle)– fully compensated pressure relief valve opens independently of tank- or return line back-pressure– over-compensated models are available with various reducing stages – outstanding fine control from optimised, low-flow control notches– high resolution, thanks to the long control stroke– the valve is guaranteed to close, even with a broken spring– hardened, ground and lapped seat valve omponents ensure permanent leaktightness and long service life– low-noise operation thanks to multiple, specially shaped notches– very low hysteresis– various pilot pressure ranges can be chosen– various types of pilot-control are available– damping properties guarantee a stable system even in sensitive applications– additional asymmetric damping properties can be provided– high power density– wide choice of build types can be supplied

12 420 150

16 420 250

20 420 350

25 420 500

Nom Pmax Q Q max SymbolSize bar l/min l/min

Leakfree load control valve

Cindy B

Standard

Page 53: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

54

12 420 150

16 420 250

20 420 350

25 420 500

20 420 350

25 420 500

12 350 60 90

16 350 100 150

20 350 160 240

25 350 250 350

6 420 50 80

NG Pmax Q Q max Symbolbar l/min l/min

Cindy B

Platten

Cindy B

Cartridge

BBV

BBV C

B1

BA

A1

DLBVleakfree double loadcontrol valve

Opening ratio: 1:66

6 420 50 80

Opening ratio: 1:66

Page 54: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

55

Leakfree (excavator) pipe rupture valve

Prevents uncontrolled movement of the cylinder if a pipe or a hose burst occurs

ESVleakfree excavator pipe rupture valve

– flanged directly into the cylinder withan SAE flange, trouble-free originalequipping or retro-fitting

– no more preassembling thanks to fit-ting of unions on ports A, E, L and X

– the pressure relief valve operatesindependent of the return pressurein port A

– no need for a reservoir line with alarge nominal diameter

– the housing dimensions are identi-cal for both sizes of port (3/4" and1"), which makes it easier to run thepipework when using different typesof machine

RS/RSE/RSG/RSW/RSPRPipe rupture valve

– either almost leakfree closing orslow lowering

– minimal spatial requirement thanksto compact design

– simple adjustment of flow rates

Q s = max. settable closing flow

16 400 200

20 400 300

Type: RSW and RSPR

8 400 40

12 400 80

16 400 160

Type: RS

16 350 130

32 350 400

Type: RSE and RSG

1/4˝ 400 25

3/8˝ 400 45

1/2˝ 400 75

Pmax Q nenn Q s Type Symbolbar l/min l/min

Standard ESV-ST

Flange ESV-FL

X

L

A

B

E

Z

P

Nom Size

Page 55: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

DERV Leakfree, pilot operateddouble-check valve

56

B

A

X

A1

BA

B1

Rapid traverse in cartridge type EGPGeneral description:– four functions in one cartridge:

holding position and no forward-sliprun out with half-load in rapid traverserun out with full-load and full forcerun in

– automatic rapid traverse function inone cartridge

Advantages:– all functions in one cartridge– self controlled, no external pilot

signal need– simple cavity– pre-tensioning pressure for rapid

traverse– pre-tensioning pressure for force

traverse

Load control valve for slewing gearDLHV 4

General description:– pressure relief valve with 3 pressure-

stages– all pressure-stages can be adjusted

individual

Advantages:– the design is more simple than load

control valves, and independent ofexternal oscillations

Check valves

20 350 250

4 350 15

Pmax Q nenn Type Symbolbar l/min

Special valves

B

B1

B

A

X

A

Pmax Q Q max. Type Symbolbar l/min l/min

Pmax Q Q max. Type Symbolbar l/min l/min

ERV

Leakfree, pilot operatedcheck valve

8 450/ 40600

Opening ratio: 1:2.5

8 350 70

10 350 100

Opening ratio: 1:18

DDP

P

T

L

A B

Pressure valvesUVP

Cartridge-type pressure reliefvalve

4 500 20

Adjustment range: 0-500 bar

16 D/E 480 400

32 D/E 480 800

Double pressure relief valve with oneor two separated adjustment ranges

NomSize

NomSize

NomSize

Page 56: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

57

Compact Power Units Type UP

Simple stack type construction with asmall number of components means thatthe units can be quickly and easilyassembled

Type UP 100

Housing:- direct threaded connections- arrangement for manifolds- arrangement for valves

Electric motors:1. D.C. motors

Voltage in V 12 12 24 24 24 48Power in KW 0,8 2 1,2 2,5 3 2

2. A.C. single phase motors 230 V

Voltage in KW 0,25 0,37 0,55 0,75 1,1 1,5 2,2

3. A.C. three phase motors 230/400 V

Power in KW 0,25 0,37 0,55 0,75 1,1 1,5 2,2 3 4

Gear pumps series AP 100Displacementin cc/U 1,2 1,7 2,5 3,5 4,3 5 6,5 7,8 10Max. Pressure 210 210 190 180 150

• Direction: left or reversible• Also with double pumps and hi-lo valve

Oil TanksCapacity in l

Steel 5 7 8 10 12 15 18Plastic 1,5 2,5 3,5 6 8 10 12 14

Module controlsSingle or section manifolds forcartridge or CETOP solenoid valves:- parallel or series circuits- Manifold for valves HDS11- customer specific blocks

Cartridge valvesStandard Cavity: 3/4“ UNF and 7/8“ UNF

Solenoid valves- direct or pilot operated- normally open or closedControl valves- check valves- pressure relief valves- manual over-ride valves- pilot and direct acting directional

valves- flow control valves, pre-set or

adjustable- lever valves- lever valves with microswitchEmergency hand pumps

Examples of some feasible hydraulic circuits

Page 57: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

58

Type UP 50

Housing:Single acting circuit:- direct threaded connectionsDouble acting circuit:- arrangement for manifoldsReversible circuit:- direct threaded connections

Electric motors:1. D.C. motors

Voltage in V 12 24 48Power in KW 0,35 0,8 0,9 1,5 0,4 0,9 1,2 1,6 2 2

2. A.C. single phase motors 230 V

Power in KW 0,16 0,25 0,33 0,5 0,75 1

3. A.C. three phase motors 230/400 V

Power in KW 0,16 0,25 0,33 0,5 0,75 1

Gear pumps series AP 05Displacementin cc/U 0,25 0,5 0,75 0,9 1,2 1,6Max. pressure 170 190 170 170

• Direction: left or reversible

Oil TanksCapacity in l

Plastic 0,5 1 1,5 2,5 4

• also available in steel

Module controlsMounting for cartridge valves:- customer specific blocks

Cartridge valvesStandard Cavity: 3/4“ UNF and 7/8“ UNF

Solenoid valves- direct operating- open and closed centreControl valves- check valves- relief valves- flow control valves

Electric motors- D.C. motors

Voltage in V 12 24 48Power in KW 0,8 1,5 2 1,2 2 3 2

- Also available with 3 phase operation.- Motors for continuous and intermittent operation.

Examples of some feasible hydraulic circuits

Electric pump type ET

Pressure relief valveType Range Standard preset06 VM. 30 - 95 bar 60 bar15 VM. 96 - 210 bar 150 bar

Gear pump type AP05 is not available with an integrated relief valve

Gear pump

AP 05V in cc/U 0,25 0,5 0,75 0,9 1,2 1,6p1 in bar 170 190 170

AP 100V in cc/U 1,2 1,7 2,5 3,5 4,3 5 6,5 7,8p1 in bar 210 190 180

AP 200V in cc/U 4,3 6,3 8,3 11 15 18,9 21,9p1 in bar 220 210 200

Page 58: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

59

Type UP 25

Housing:Single acting circuitDouble acting circuitReversible circuit

Electric motors:1. D.C. motors

Voltage in V 12 24Power in KW 350 500 400 500

2. A.C. single phase motors 230 V

Power in KW 0,09 0,16 0,18

3. A.C. three phase motors 230/400 V

Power in KW 0,09 0,16 0,18

Gear pumps series AP 05Displacementin cc/U 0,16 0,25 0,35 0,5Max. pressure 150 170 190 190

Oil TanksCapacity in l

Steel 0,3 0,5

Cartridge valvesStandard Cavity: 3/4“ UNF and 7/8“ UNF

Solenoid valves- direct operating- open and closed centreControl valves- check valves- relief valves- flow control valves

Examples of some feasible circuits

Page 59: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

60

Control Modules

Proportional and switching systems3 level digital controlProgrammable systemsAnalogue and digital logic and switchingcontrol remote operation

Joysticks

Type Type Function Application Connection Schematic Technical data

Joysticks for on/off on/off operation Voltage = 12 to 220 Vswitching with of 1 or 2 on/off A.C. Current:detent and locking Solenoids Inom = 3 to 10 A

D.C. Current:INom = 0,55 to 8 A

Electronic joystick Input for Voltage = 4,75 to 15 Vproportional control Control: 1 signal per axisof 1 or 2 axis Output: control 1,8 kΩ

centre tap 0,34 kΩProtection: IP 54 / IP 33

For electronic controled Voltage = 9 to 30 Vvalves, robust model, Control: 0,5 – 4,5 Vfunction grip with 2 switcher, per axisvariant with integrated Protection: IP 65electronic

Joystick with up to 4 CAN-Bus Voltage = 12 bis 24 Vvariable outputs and 6 Joystick for 2 axis. Control: 1 signal per axisswitched outputs in the Can be used as a slave Output: 4x1,8/0,9 A max

handle with CAN-Bus Adjustment: Imin, Imax

and output signal (per axis) Protection: IP 54 / IP 33

CAN interfaces in Voltage = 9 to 30 Vintelligent systems, Protection: IP 65ergonomic optimized grip,different grip equipment,EMV check existing

FGE

FGE

/ JS

14

FCE

FCE

/ JS

3FC

EG

48 x 48x 150

60 x 60x 250

48 x 48x 115

Page 60: Hydraulics and Electronics Componentshydro.tg.free.fr/doc/hydro/bucher.pdf · 4 High Pressure Internal Gear Pumps Type QX long service life negligible flow- and pressure pulsations

61

Proportional controller Control of a Voltage = 12 to 30 Vwith 1 control input proportional solenoid Control: 0 to 5 Vand a single output Output: 1 x 2,5 A max

Adjustment: Imin, Imax

Proportional controller Control of a Voltage = 12 to 30 V DCwith 1 control input, proportional solenoid Control: 1 x Potentio-1 feed back input and meter1 output 1 x 0 V bis

4 (9) VOutput: 1 x 2,5 A max

Adjustment: Imin, Imax

Multi function card Control of 2 proportional Voltage = 12 to 30 V DCwith 3 outputs, solenoid and 1 on/off Control: 2 x 0–9 V2 programmable inputs, solenoid 1 digital 1 digital input and 1 input inputfor current measurement Output: Prop. 2,5 A max

s/w 3 A max

Adjustment: Imin, Imax

centre tapDiagnosis: LED per(LED) output

Contactless relay card Controls shafts speed Voltage = 12 to 30 V DCcard with one control against torque Control: Namar (NPN)input and feedback signal (e.g. diesel driven Sensor

shredder) Output: max. 3,5 AAdjustment: frequency,

hysterisis

Relay card with 8 Control of 5 on/off Voltage = 12 to 30 V DCcontrol inputs solenoid Control: 8 x switch

low = switchoffhigh = switchon

Output: 5 x 3,5 A(max. 8 A)

2 axis proportional Control of 2 proportional Voltage = 12 to 28 Vcontroller with 1 input valves in continuation Control: 2x4,5 ± 0,7 Vper axis and 4 outputs with FGE… Output: 4 x 1,8 A max

Adjustment: Imin, Imax

per axis,Option Imax

pro solenoid

Standard controller Control of a single Voltage = 12 to 30 Vwith a single control proportional solenoid Control: 0 to 6,2 Vinput, feed back input in close loop operation Feedback: 0 to 9 Vand control output (feedback)

Adjustment: Imin, Imax

(max 2,5 A)

ESSK

103

ESSK

105

ESSK

107

ESSK

208

ESRV

103

ESLT

105

ESLT

501

Amplifier and control cards

100 x 100 x 25 mm

160 x 100 x 25 mm

100 x 160 x 20 mm

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62

Digital comparator Control of 2 Voltage = 12 to 30 Vwith two outputs switched outputs Control: Potentiometerand inputs with with position control 4,7 kΩ; 4,5 Vfeedback Output: 2 x 3,5 A

Adjustment: positioncontrol, feedbackMax. position response

Salt on/off dedector salt control for gritter Voltage = 12 to 30 V DCwith outout Control: microfon

Output: max. 100 mA(Relais)

Diagnosis: with LED’s

ESDR

101

ESKT

101

Amplifier and control cards

100 x 160 x 20 mm

Proportional controller Control of a Voltage = 12 to 30 V DCwith 1 power output proportional solenoid Control: ON/OFF

PotentiometerOutput: 1 x proport.

max. 2,5 AAdjustment: Imin, Imax

Proportional controller Control of 1 proportional Voltage = 12 to 30 V DCwith 1 power output and valve and 1 on/off valve Control: ON/OFF1 switching output Potentiometer

Output: 1 x proport.(max. 2,5 A) 2 x switch(max. 3,0 A)

Adjustment: Imin, Imax

Proportional controller Control of 2 proportional Voltage = 12 to 30 V DCwith 1 power output valves alternate Control: signal value

potentiometerOutput: 2 x prop. (max.

2,5 A)Adjustment: Imin, Imax

Proportional controller Control of 1 proportional Voltage = 12 to 30 V DCwith 1 power output and solenoid reliance on Control: ON/OFF1 reference input a reference input signal value

potentiometerOutput: 1 x proport.

(max. 2,5 A)Adjustment: Imin, Imax

ELSK

103

ELSK

103

-12

ELSK

103

-13

ELSK

105

-02

Electronic control systems

Proportional amplifier Output for one Voltage = 12 to 30 Vincorporating input proportional solenoid Control: 0 to 3,5 Vpotentiometer on/off mounting panel Output: 1 x 2,5 A max

switch and ramp Adjustment: Imin, Imax

function

ELSK

106

50 x 60 x 55 mm

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63

Digital controller Voltage = 12 a. 24 V DCwith two variable outputs Control: spread width,with feedback and density, digital inputsexternal speed signal analogue inputstypical application road speed inputspeed related Output: max. 2,5 Asalt spreader Adjustment: Imin, Imax

Digital controller with Voltage = 12 to 30 V a microcontroller, Signal value: road speed,diagnosis output and spread width,PC-Interface spreading

distanceActual value: spinner, belt

spreadOutput: 3x 2,5 A prop.

6 x 5 A s/wAdjustment: Imin, Imax

ELDR

103

ELM

P 15

0-01

ELM

R 15

0-01

ELM

R 15

0-20

Electronic control systems

185 x 180 x 65 mm

185 x 180 x 65 mm

Digital comparator Control of 1 position drive Voltage = 12 a. 30 V DCwith output for position Control: potentiometercontrol 2–5 kΩ

Output: max. 0,5 AAdjustment: Imin, Imax

Analogue controller Voltage = 12 a. 24 V DCwith two variable outputs Control: spread width,with feedback and density, digital inputsexternal speed signal analogue inputstypical application road speed inputspeed related Output: max. 2,5 Asalt spreader Adjustment: Imin, Imax

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Your contact

motion and progresswww.bucherhydraulics.com

GermanyBucher Hydraulics GmbHIndustriestrasse 1D-79771 KlettgauTel.: +49 7742 85 20Fax: +49 7742 71 [email protected]

SwitzerlandBucher Hydraulics AG FrutigenSchwandistrasse 25Postfach 93CH-3714 FrutigenTel.: +41 33 67 26 111Fax: +41 33 67 26 [email protected]

AustriaBucher Hydraulics Ges.m.b.H.Breinbergstrasse 1A-5202 Neumarkt a. W.Tel.: +43 6216 44 97Fax: +43 6216 44 [email protected]

NetherlandsBucher Hydrauliek B.V.Postbus 222NL-2700 AE ZoetermeerWattstraat 26 cNL-2723 RC ZoetermeerTel.: +31 79 34 26 244Fax: +31 79 34 26 [email protected]

ItalyBucher Hydraulics S.p.AVia P. Coletta n. 5I-42100 Reggio EmiliaTel.: +39 0522 92 84 11Fax: +39 0522 51 32 [email protected]

FranceBucher Hydraulics SAS50 Rue de l’Ile NapoléonF-68173 Rixheim-CedexTel.: +33 389 64 22 44Fax: +33 389 65 28 [email protected]

Great BritainBucher Hydraulics Ltd.Unit 9, Eastboro FieldsHemdale, NuneatonGB-Warwickshire CV11 6 GLTel.: +44 2476 35 35 61Fax: +44 2476 35 35 [email protected]

TaiwanBucher Hydraulics Co. Ltd.No. 22 Ding Hwv 5th St.Kuasun Shiang TaoyuanTaiwan, R.O.C.Tel.: +886 33 28 77 28Fax: +886 33 28 83 [email protected]

ChinaBucher Hydraulics Beijing OfficeRoom 1211, Tower AQianqun Commercial MansionsAnzhen xili, Chaoyang DistrictP.R. China-100029 BeijingTel.: +86 10 64 44 32 38Fax: +86 10 64 44 32 [email protected]

Product Center ElevatorBucher Hydraulics AGIndustriestrasse 15CH-6345 NeuheimTel.: +41 41 75 70 33 3Fax: +41 41 75 51 64 [email protected]

USABucher Hydraulics, Inc.9114 58th Place Suite 800KenoshaWI 53144, USATel.: +1 262 605 8280Fax: +1 262 605 [email protected]

Bucher Hydraulics, Inc.300 North Midland Ave.Saddle Brook,NJ 07663-5514 USATel.: +1 201 703 83 84Fax: +1 201 703 11 [email protected]

Reference: 100-P-000068-E-00Classification: 400.00.00.00 / 08.2003

We pursue a policy of continuous research and development, therefore we reserve the right of modification without prior notice.