VARIABLE DISPLACEMENT - rslhydro.fr · HYDRAULIC MOTORS VARIABLE ... radial stress and thus improves service life. Mechanical liaison between piston head and motor shaft guarantees

HYDRAULIC MOTORS

make it simple

VARIABLE DISPLACEMENT

2 C o n t e n t s

HYDRAULIC MOTORS VARIABLE DISPLACEMENT

Design, characteristics and advantages . . . . . . . . . . .3

Efficiency and operating conditions . . . . . . . . . . . . . . .4

Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Dimensions MV series motors . . . . . . . . . . . . . . . . . . . . .7

Dimensions MVSI series motors . . . . . . . . . . . . . . . . . . .9

Dimensions MVA series motors . . . . . . . . . . . . . . . . . . . 11

Displacement control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Options | Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Installation and start-up recommendations . . . . . . .15

Also find the fixed displacement LEDUC motors range in the BENT AXIS HYDRAULIC MOTORS - FIXED DISPLACEMENT catalogue downloadable on www .hydroleduc .com

Complete catalogues available at www.hydroleduc.com

� Models from 5 to 180 cc/rev � Available in DIN and SAE versions � In fixed displacement, special drainless motor.

3D e f i n i t i o n & a d v a n t a g e s

► Main applications � Suitable for use in either open or closed loop circuits � Wheel drives � Track drives � Winches

► Advantages of the LEDUC variable displacement motors � 9 pistons designed for high starting torque and reduced pulsations at low speed � Continuous variation in displacement from Vmax to Vmin (=0) � High operating ratio (5 :1) � Compact size, high weight-power ratio � High speed and high operating pressure � Low noise level � Long service life � 3 choices of displacement control : see page 9 (HPA, H2N, E2N)

► Technical characteristics of LEDUC variable displacement motors

85 115Max. displacement Vmax 28.185.2 79115 .6Min. displacement Vmin 059 .7 040 .1Displacement ratio 5 Vmax / 5 17 cc 23.1 ccMax. continuous operating pressure Pmax 400 bar 400 barMax. peak pressure Pp 450 bar 450 barMax. speed at max. displacement Nmax at Vmax 3900 rpm 3550 rpmMax. speed at min. displacement Nmax at Vmin 6800 rpm 5600 rpmMax. flow absorbed Qmax 331 l/min 408 l/minMax. output power Pmax 220 kW 271 kWMax. output torque at Pmax and Vmax Cmax 54 daN .m 73 daN .m

Currently two models of motor are offered : 85cc/rev and 115 cc/rev. Models to extend the range are currently being developped.

No gears between swashplate androtating barrel, yields reduced noise levels.

High performance bearingsfor long service life.

Sealing designed specificallyto withstand back presssurefrom the motor return drain circuit.

9-piston design, ensuring excellent operatingregularity and constant torque.

By design, the barrel is centered, which avoidsradial stress and thus improves service life.

Mechanical liaison between piston headand motor shaft guarantees there is no separationand thus ensures long service life.

Injection of high pressure on piston headsreduces friction, heating and wear. Maximum and minimum displacement setting via screws.

Displacement controlled by setting piston.Different controls are offered: see page 13.

► Advantages of LEDUC variable motorsHigh quality know-how and materials. The design choices below ensure the reliability and long service life of LEDUC motors.

4

►Preparation of the motor

Bleeding of control device is done automatically during initial commissioning .

►The fluid

LEDUC motors are designed for use with mineral based hydraulic fluid . Using other fluids is possible but may require a modified motor. Please contact us with details of fluid .

Recommended viscosity: � Ideally: between 15 and 400 cSt, � Maximum range: between 5 and 1600 cSt.

►Filtration of the hydraulic f luid

The service life of the motors depends greatly on the quality and the cleanliness of the hydraulic fluid . We recommend minimum cleanliness as follows:

� NAS 1638 class 9, � SAE class 6, � ISO/DIS 4406 class 20/18/15.

For fluids at very high temperatures 194 to 239 °F (90 to 115 °C), we recommend a minimum cleanliness class of 19/17/14 according to ISO 4406 .

►Rotating speeds

Minimum rotating speed to obtain continuous rotation is 200 rpm (however, in certain conditions, the motor can run at speeds as low as 50 rpm). Maximum rotating speed is given for each model of motor.

►Installation posit ions

LEDUC motors are made to operate in all positions (see details on page 15).

►Operating temperatures � As standard, LEDUC motors are fitted with FKM seals (Viton ®).

Operating temperatures: from -13 to 239 °F (-25 à 115 °C). � As an option, HYDRO LEDUC proposes NBR seals, for

operating temperatures from -40 to 176°F (-40 to 80°C).

E f f i c i e n c y a n d o p e r a t i n g c o n d i t i o n s

► Efficiency of the MV, MVA, and MVSI motors

IMPORTANT NOTE: Before start up, ensure the motor is filled with hydraulic fluid: See section on installation and start-up, page 15.

Effic

iency

(%)

50

60

70

80

90

100

Efficiency at 1/3 displacementN = 1000 rpm ISO46 fluid at 25°C (77°F)

0 (1450) (2900) (4350) (5800)

Pressure in bar (psi)Volumetric efficiency (%)Global efficiency (%)

0 100 200 300 4000 (1450) (2900) (4350) (5800)

Pressure in bar (psi)

Effic

iency

(%)

50

60

70

80

90

100

Efficiency at maximum displacementN = 1000 rpm ISO46 fluid at 25°C (77°F)

Volumetric efficiency (%)Global efficiency (%)

0 100 200 300 400

These graphs are given as an indication only; for further information, please contact our Technical Service.

5E f f i c i e n c y a n d o p e r a t i n g c o n d i t i o n s

►Direction of rotation

The motors rotate clockwise or counter-clockwise depending on the direction of hydraulic flow entering the motor.

►Drain pressure

It is essential to drain the motor, T1 and T2, to avoid excessive pressures on the shaft seal. Maximum acceptable internal pressure depends on motor rotation speed.

However, following these guidelines will avoid problems during operation:

� Maximum internal pressure (Int P) regardless of rotating speed (continuous): 4 bar.

� Maximum pressure regardless of rotating speed: 5.5 bar. � The maximum pressure in the motor housing must be greater

than the external pressure (ext P).

Clockwise rotation

(CW)

Counter-clockwise rotation (CCW)

BA

T2

T1 T1

T2

BA

►Acceptable forces applied to motor shaft

Variable motors MV | MVSI | MVA

85 115

Fr daN 1300 1500

Fa N/bar 80 60

Fr

Fa

6 O r d e r c o d e

MV . . . A . . . . . . M2 . . . . . . . . . . . . F To obtain the code for your motor, complete the different parameters 01 to 11 in the table on the left according to the options you require (see table below).01 02 03 04 05 06 07 08 09 10 11

Motor

01 MV MVSI MVA MV MVSI MVA

Displacement02 85 115 85 115 85 115

Mounting flange03 ISO 3019-2, 4 bolts ISO 3019-2, 2 bolts SAE C 4 bolts SAE D 4 bolts A B C

Shaft

04DIN 5480 splined W40 W40 W40 W40 – – W1SAE J744 splined 1½" 17T 12/24 DP 1¾" 13T 8/16 DP – – 1½" 17T 12/24 DP 1¾" 13T 8/16 DP S1

Inlet ports

05 Flange

Rear ● ● ● ● ● ● M0

Side● ● ● ● ● ● N0(–) (–) (–) (–) (–) (–) N1

Drain06 2 2 2 2 2 2 M2 M2 U2

Regulation

07

Automatic high pressure ● ● ● ● ● ● HPA

Hydraulic 2 speeds ● ● ● ● ● ● H2N

Electric 2 speeds ● ● ● ● ● ● E2N

Suitable for use of speed sensor

08Yes ● ● ● ● ● ● 1No ● ● ● ● ● ● 0

Speed sensor

09Yes ● ● ● ● ● ● 1No ● ● ● ● ● ● 0

Flushing valve

10Without ● ● ● ● ● ● SVWith flushing valve (–) (–) (–) (–) (–) (–) VB

Seal11 FKM ● ● ● ● ● ● F

Requires a N1 flange.Legend:● Exisiting model– Not yet existing

(–) Possible on request.

7

27.8

57.2

M12 depth 17 mm

Ø 24

M12 depth 17 mm

Ø 24 27.8

57.2

75

36

37

M16

x 20

0

P

45 0-0.5

77 +1-0.5

M V 8 5

Side flanges SAE 1" 6000 psi

Splined shaft DIN 5480 W40 x 2 x 30 x 18 x 9g

122.9

141.6 32 31

266.5

98

10

86.8

114

15° Ø

116

Ø

140

-0 0.02

196.8

31.8

T1 : M18 x 150

T2 : M18 x 1.5

P

Ø 13.50

127.3

127.3

165

170.8

0

Ø 180

+10

W1

N0Rear flanges SAE 1" 6000 psiM0

►Shaft - code

►Inlet ports - code

Dimensions (in mm) are given only as an indication .

04

05

1.73 (44)

1.10 (28)

7/16

14UN

C-2B

P

(54 ) 0 -0.5

(62 )+1-0.5 2.44 +0.04

-0.02

2.13 0-0.02

Splined shaft SAE J744 17T 12/24DP 1½"S1

8 M V 11 5

39 159.6

102.80

10

285.5

95

111.4

11

9.5

15°

212.9

34 1

45

P

T2 : M18 x 1.5

Ø 17.50

141.4

141.4

190

190

Ø 200

Ø

160

0 -0.02

5

40 +1-0

Ø 24

27.8

57.2

M12 depth 17 mm

90

27.8

57.2

Ø 24

M12 depth 17 mm

M12

x 17

5

37

28

85 +1-0.5

P

45 0-0.5

Side flanges SAE 1"6000 psi

Splined shaft DIN 5480 W40 x 2 x 30 x 18 x 9gW1


►Shaft - code


04

05


1.42 (36)

2.05 (52)

2.63 (66.70)

5/8"

11UN

C-2B

(75 ) +1-0.50

P2.95 +0.04-0.02

Splined shaft SAE J744 13T 8/16DP 1¾"S1

9

27.8

57.2

M12 depth 17 mm

Ø 24

M12 depth 17 mm

Ø 24 27.8

57.2

75

M16

x 20

0

37

45 0-0.5

36

P155.5 +0.2

-0.9

M V S I 8 5


Splined shaft DIN 5480 W40 x 2 x 30 x 18 x 9g

142

1

16

118.3

187.4

15°

110.5 +0.2-0.4

109.5

122.9

31

.8

86.50

81.50

10

6 19.50

15

PT1 : M18 x 1.5

T2 : M18 x 1.5

224

Ø 21

99

R99

153

260

Ø 19

0 +0 -0.03

W1



►Shaft - code


04

05

10 M V S I 11 5

122.8 +0.2-0.4

96

84.5

Ø 16

0 Ø

138

Ø

200

0 -0.02

9

202.7

111.4

15°

119

114

23

130.1

34

15 T1 : M18 x 1.5

T2 : M18 x 1.5

P 250

103

R105

Ø 22

164

286

Ø 24

27.8

57.2

M12 depth 17 mm

90

27.8

57.2

Ø 24

M12 depth 17 mm

M12

x 17

5 28

37

167.8 +0.2-0.9

P

45 0-0.5


Splined shaft DIN 5480 W40 x 2 x 30 x 18 x 9gW1



►Shaft - code


04

05

11

1.09(27.8)

2.25

(57.2

) Ø 0.94(24)

7/16 14UNC-2B

1.09(27.8)

7/16 14UNC-2B

Ø 0.94(24)

2.95(75)

2.25

(57.2

)

1.73 (44)

1.10 (28)

7/16

14UN

C-2B

P

(54 ) 0 -0.5

(62 )+1-0.5 2.44 +0.04

-0.02

2.13 0-0.02

M VA 8 5 ( S A E v e r s i o n )


Splined shaft SAE J744 17T 12/24DP 1½"

11.41 (289.9)0.5(12.70)

15°

4.80 (122)

4.49 (

114)

4.8

4 (12

2.90)

8.69 (220.8)

1.25

(31.

8)

6.52 (165.6)

86.8

(3.42

)

0.3(7.90)

T2 : 1"1/16 12UNF-2B

T1 : 1"1/16 12 UNF-2B

0.69 (17.5)

7.13 (181)

6.72 (

170.8

0) 4.19 (R106.5)

Ø 5.0

00.00

-0.00

(Ø 12

7

)0 -0

.025

S1


Dimensions in inches (mm) are given only as an indication .

►Shaft - code


04

05

12 M VA 11 5 ( S A E v e r s i o n )

5.17 (131.40)

7.42 (188.4) 12.36 (313.9)

3.72 (

94.5)

4.7

0 (11

9.5)

4.3

9 (11

1.4)

1.3

4(3

4)

9.50 (241.3)

15°

0.50(12.70)

6.00

0.000

00.0

010

(Ø 15

2.40

)

0 -0

.025

7.90

(0.31)

T2 : 1"1/16 12UNF-2B

T1 : 1"1/16 12 UNF-2B

6.36 (

161.6

0)

6.36 (161.60)Ø 0.81(20.60)

8.11 (

206)

Ø 9.00(228.54)

Ø 0.94(24)

2.25

(57.2

)

1.09(27.8)

7/16 14UNC-2B

1.09(27.8)

2.25

(57.2

)

Ø 0.94(24)

7/16 14UNC-2Bdepth 22 mm

3.54(90)

1.42 (36)

2.05 (52)

2.63 (66.70)

5/8"

11UN

C-2B

(75 ) +1-0.50

P2.95 +0.04-0.02


Splined shaft SAE J744 13T 8/16DP 1¾"S1



►Shaft - code


04

05

13

Automatic displacement control, high pressure

HPA

Two speed hydraulic adjustment of displacement:

H2N

Two speed electric adjustment of displacement:

E2N

►Displacement sett ings - code

MA

Regulating pressure Pr (bar)

Displacement

Vmax

Vmin

Minimum setting

Maximum setting

80 90 350 360

Vmax Vmin

A B

PX

MB

MpV1 V2

P

Displacement

Vmax

Vmin

Minim

um se

tting

Maxim

um se

tting

Pilot pressure X(bar)

5 25 100

A

MA

G B

X

MpV1 V2

MB

Vmax Vmin

Coil supply voltage(Volt)

24

Vmax

Vmin

Displacement

Vmax Vmin

A G B

MpV1 V2

MA

P

MB

The automatic displacement control, high pressure, automatically adjusts displacement as a function of the set pressure level.

This can be set between 80 and 350 bar .

Once set pressure has been reached, the motor starts changing displacement from Vmin to Vmax. Pressure remains stable, torque increases and speed decreases until Vmax is reached.

Once Vmax has been reached, motor pressure can exceed set pressure if required.

.

Setting Vmin or Vmax displacement is done by applying an external pilot pressure, or not.

Pilot pressure can be set by a screw from 5 to 25 bar.

Once pilot pressure has been reached, the motor starts changing displacement from Vmin to Vmax (standard configuration). From Vmax to Vmin on request.

Important note: the pilot pressure line X must be drained when it is not under pressure (to ensure evacuation of leakage flow) .

Setting Vmin or Vmax displacement is done by applying an external electrical current via a solenoid, or not.

Standard voltage of the coil is 24V (12V on request).

When the coil is activated, the motor starts changing displacement from Vmin to Vmax (standard configuration) . From Vmax to Vmin on request.

.

D i s p l a c e m e n t c o n t r o l

07

14

0.41 (10.5)

4.53(

115)

0.79

(20)

Ø 0.55 (14)1.30 (

33)

0.60(15) Ø 0.26 (6.50)


Supply voltage 5…32 V DC Current consumption maximum 6 mA without loadOutput frequency 0 Hz…20 kHzProtection type IP 69 kOperating temperature – 104°F…+ 257°F (– 40°C…+ 125°C)Weight around 65 gCable length 50 cm

S P E E D S E N S O R & I N D I C AT O R O F D I R E C T I O N O F R O TAT I O N L E D U C C O D E : 0 9 3 3 2 7

Codes and

MV, MVA, MVSI series motors can be fitted with an induction type speed sensor, to measure rotating speed and also direction of rotation. This accessory may only be used on motors which are suitably adapted to take it (see the order code system) .

►Technical data for the sensor

O p t i o n s | A c c e s s o r i e s

FLUSHING VALVE | LEDUC CODE : VBS 091180

Code

A B

►S c h e m a t i c d r a w i n g o f t h e f l u s h i n g v a l v e

08 09

10

Used to create flow to cool the motor. This valve is essential for all intensive uses of motors and contributes to long service life.

The valve takes some hydraulic fluid from the return connection port (low pressure) and reinjects it into the motor housing. This is then evacuated via the motor drain line .

Flushing valves are only available for use with motors with side ports (N1).

15I n s t a l l a t i o n & s t a r t u p

In installations where the position of the motor (H) is above the tank for the drain return, be sure the drain line is always submerged in fluid.If this is not the case, it is necessary to add a check valve on the drain line as shown the figure on right.

B A

Fr

70°

B A

Fr

70°

B A

Fr45°

B A

Fr45°

B A

Fr

H

►Maximizing service l i fe of bearingsIn cases where there is a radial force on motor shaft, keeping the direction of that force within the shaded areas shown below will improve service life of the motor .

Motor in rotationCCW

pressure in A

Motor in rotationCW

pressure in B

Motor in rotationCW

pressure in B

Motor in rotationCCW

pressure in A

Motor capableof rotation

CCW and CW

Gear hub Pulley hub

►Mounting posit ion of motors

LEDUC motors can be used in only mounting position. In ″shaft upwards″ position, make sure that the motor housing is completely filled with fluid.

Ensure a ∆P of (0 .3 to 0 .5 bar)

HYDRO LEDUC SAS Siège social & Usine

BP 9 - F-54122 AZERAILLES (FRANCE) Tél . +33 (0)3 83 76 77 40 - Fax +33 (0)3 83 75 21 58

HYDRO LEDUC GmbH

Haselwander Str. 5 D-77746 SCHUTTERWALD (GERMANY)

Tel. +49 (0) 781-9482590 - Fax + 49 (0) 781-9482592

HYDRO LEDUC ABGöteborgsvägen 74

SE-433 02 SÄVEDALEN (SWEDEN) Tel. +46 (0) 702 61 77 70

HYDRO LEDUC N.A. Inc. 19416 Park Row - Suite 170

HOUSTON, TEXAS 77084 (USA)Tel. +1 281 679 9654 - Fax +1 832 321 3553

EN_20160406_VARIABLE MOTORS

HYDRO LEDUC

SAS au capital de 4 065 000 €

EORI FR31902742100019

RC Nancy B 319 027 421

[email protected]

A p a s s i o n f o r h y d r a u l i c s

w w w . h y d r o l e d u c . c o m

HYDRO LEDUC SAS Head Office & Factory

BP 9 - F-54122 AZERAILLES - FRANCE Tél . +33 (0)3 83 76 77 40 - Fax +33 (0)3 83 75 21 58

HYDRO LEDUC GmbH Haselwanderstr. 5

D-77746 SCHUTTERWALD - GERMANYTel. +49 (0) 781-9482590 - Fax + 49 (0) 781-9482592

HYDRO LEDUC AB

Betongvägen 11 461 38 TROLLHÄTTEN - SWEDEN

Tel. 46 (0) 520 10 820

HYDRO LEDUC N.A. Inc. 19416 Park Row - Suite 170

HOUSTON, TEXAS 77084 (USA)Tel. +1 281 679 9654 - Fax +1 832 321 3553

make it simple

Documents

VARIABLE DISPLACEMENT - rslhydro.fr · HYDRAULIC MOTORS VARIABLE ... radial stress and thus improves service life. Mechanical liaison between piston head and motor shaft guarantees