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Metric

0 10

13-5

MAGNETIC PARTICLE SLIP CLUTCHES

DESIGN:The magnetic particle slip clutch uses a sealed, steel outer housing and permanentmagnets arranged alternately (north and south poles) around a central hub. The space between the housing and the magnets is filled with a ferromagnetic compound (hysteresis particles). The particles align themselves along the flux pattern between the steel housing and the mag-nets, creating a magnetic coupling between them. (See Fig. 1)

The torque rating is determined by the number of particles added. The clutches can be manufactured in the range from 2.82 to 39.55 N • cm. Because the coupling is magnetic, torque value remains stable over time, temperature and speed value.

APPLICATIONS: One of the applications is for paper feeding devices on scanners, copy machines and fax machines. Paper is an abra-sive material. Pages often stick together and usually the thickness of the paper is different. The paper feeding device uses a powered roller to “urge” the top sheet off an infeed stack toward the interface between a second pair of rollers just beyond the urging mechanism. On the second pair, one of the rollers is powered; the second is unpowered, spring-loaded against the first and rides on a shaft linked to the chassis through the magnetic particle clutch. With no paper in the feeder mechanism, the clutch slips; when a single page is drawn between rollers, friction between the rollers and the paper remains high enough to maintain slippage and paper passes through the mechanism normally.

If two or more pages are drawn in, the coefficient of friction between the pages is not high enough to drive the unpow-ered roller. The slip clutch now acts as a drag brake holding back the lower roller. The roller stalls, preventing all but the top page from continuing through the feed device.

Steelhousing

Magnetic bridge

Magnetic particles

Shaft Rotor (permanent magnet)

Fig. 1Reversible MagneticParticle Slip Clutch

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13-6

MAGNETIC PARTICLE SLIP CLUTCHES

ZERO MAINTENANCECONSTANT TORQUE LEVELS

MATERIAL:Shell - SteelEnd Caps - Plastic

FEATURES:Requires no powerUses permanent magnets and magnetic particlesLong operational lifeSealed from contamination

SPECIFICATIONS:d Tolerances:Fig. 1: +0.1/0Fig. 2: +0.022/0*D1 Tolerance: 0/-0.033 (h8)

**Optional torques available only by special order.

When the slip clutch is to be subjected to any radial or axial thrust, use of the ball bearing design is required. Units should be used on horizontal shafts only.

Catalog Number

METRIC COMPONENT

Fig. 1 Plastic Bearings

Fig. 2 Ball Bearings

D2

DHubDia.

l StaticN •m

Opt. Range**N •m

Torque ± 10% Nomimald

Bore d1

D1HubDia.

l1EndLgth.

LTotalLgth.

Max.Allowable

Speedrpm

Weightkg

888

8888

202027

30303737

S90APLMP08030028S90APLMP08060028S90APLMP08120035

S90APLMS08099037S90APLMS08150037S90APLMS08199044S90APLMS08301044

202020

32323232

111111

10101010

171717

20*20*20*20*

27.527.534.5

37374444

0.0300.0600.120

0.0990.1500.1990.301

0.019 - 0.0400.040 - 0.0600.060 - 0.120

0.070 - 0.0990.099 - 0.1500.150 - 0.1990.199 - 0.301

300300250

400400300300

0.0250.0250.030

0.1200.1200.1500.150

2.5 2.5 2.5

2222

111111

––––

3.1

2.4 ± 0.1

Ø2.1

Ød ØDØD2 ØD1 Ød1

L

ØD2 ØD1

1

lL

5l1

l 5l1

M3 x 0.5 (3x)EQ. SP. ON AØ26 ± 0.2 B.C.

4Fig. 1

Fig. 2

Ød ØD

4

+0.2 0

+0.2 0

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Metric

0 10

13-7

MAGNETIC PARTICLE SLIP CLUTCHES WITH SHAFT

ZERO MAINTENANCECONSTANT TORQUE LEVELSINTEGRAL SHAFT

MATERIAL: Shell - SteelEnd Caps - PlasticShafts - Steel

FEATURES:Requires no powerUses permanent magnets and magnetic particlesLong operational life

*Optional torques available only by special order.

Catalog Number **

METRIC COMPONENT

Fig. 1 Plastic Bearings

Fig. 2 Ball Bearings

DShaftDia.

0-0.03

D2

D1HubDia.

S lMax.

AllowableSpeed

rpmStaticN • m

Opt. Range*N • m

Torque ± 10% Nomimal

8888

88888

20202734

2626333340

S90BPLMP08030025S90BPLMP08060025S90BPLMP08120032S90BPLMP08181039

S90BPLMS08099028S90BPLMS08150028S90BPLMS08199035S90BPLMS08301035S90BPLMS08398042

2.42.42.42.4

–––––

15151515

1515151515

20202020

3232323232

300300250200

400400300300200

0.0300.0600.1200.181

0.0990.1500.1990.3010.398

0.019 - 0.0400.040 - 0.0600.060 - 0.1200.120 - 0.181

0.070 - 0.0990.099 - 0.1500.150 - 0.1990.199 - 0.3010.301 - 0.398

S

180

Fig. 1

Fig. 2

2.52.550 l

180

250 l

ØDØD1ØD2

ØDØD1ØD2

M3 x 0.5 (3x)EQ. SP. ON A Ø21 B.C.

NOTE: When the slip clutch is to be subjected to any radial or axial thrust, use of the ball bearing design is required. Units should be used on horizontal shafts only.

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Metric

0 10

13-8

SPRING-WRAPPED SLIP CLUTCHES

FEATURES:Long life under continuous slip conditionsUnidirectional or bidirectional operationSame or different clockwise and counterclockwise torquesPrecise and stable limit torque calibration (range: 0.007 to 4.24 N • m)Same torque at breakaway as at high slip velocitiesMounting provisions for gear, sprocket or pulleyCorrosion-resistant materials

APPLICATIONS:Tension control of film or tape drivesTransmission overload protection

SPECIAL DESIGNS:

The standard line of slip elements provides a wide selection of limit torques, sizes and coupling arrangements. In addi-tion, our engineers will modify designs to meet your specific requirements in such areas as:ConfigurationDriving arrangementLimit torques from a fraction of a N • cm to many N • m’sCalibration of torque to a tolerance of ± 5%Different limit torques for the two directions of rotationSpring windup and limit torque combination. The spring action of the slip element is useful for tensioning of tape and prevention of slack loops.

*Stock units are calibrated with equal clockwise and counterclockwise slip torques corresponding to the tabulated Upper Limit Torques. Other torques are readily available from full, down to 1/8 of the Upper Limit Torque for each model. Torque values are independent of each other for clockwise and counterclockwise rotation, and may be specified the same or different for the two directions.

**All clutches in this series have a pilot diameter “D3” and three tapped holes “T1” for mounting a gear, sprocket or pulley on the input hub. Screw penetration into the clutch housing must not exceed the depth specified in column “T1”. Concentricity of pilot diameter “D3” to bore “d” is 0.025 T.I.R. max.

All slip clutches are designed for long life under continuous slip conditions. The useful life of these elements is a function of the transmitted torque and slip speed.

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Metric

0 10

13-9

SPRING-WRAPPED SLIP CLUTCHES

Covered by U.S. Patents and Patents Pending

Catalog Number

METRIC COMPONENT

LD S

dBore+0.025 0

TSet

Screwl2l1 l3

D1

Max.Wt.

gD2

Max.

Upper* Limit

Torque N • m

D4 T1

D3 0 -0.025

Fig.No.

11111221111112222111111

26.726.731.531.531.535.335.335.335.342.442.447.847.847.847.847.847.847.847.847.858.458.458.4

161625.425.425.431.7531.7538.138.147.547.547.547.557.15 57.1557.1557.1566.55 66.5566.5576.276.276.2

4.574.575.335.335.335.845.845.845.846.356.357.377.377.377.377.377.378.138.138.13

–––

3 4 4 6 8 6 8 6 8 6 81012 6 81012 810 12161920

2.032.032.412.412.413.33.33.33.33.33.33.33.33.33.33.33.33.33.33.35.725.725.72

18.2918.2921.5921.5921.5923.8823.8823.8823.8830.4830.4834.0434.0434.0434.0434.0434.0433.2733.2733.2750.1750.1750.17

S9940YMSWC16X03S9940YMSWC16X04S9940YMSWC25X04S9940YMSWC25X06S9940YMSWC25X08S9940YMSWC32X06S9940YMSWC32X08S9940YMSWC38X06S9940YMSWC38X08S9940YMSWC48X06S9940YMSWC48X08S9940YMSWC48X10S9940YMSWC48X12S9940YMSWC57X06S9940YMSWC57X08S9940YMSWC57X10S9940YMSWC57X12S9940YMSWC67X08S9940YMSWC67X10S9940YMSWC67X12S9940YMSWC76X16S9940YMSWC76X19S9940YMSWC76X20

0.760.761.021.021.021.021.021.021.021.021.021.021.021.021.021.021.021.021.021.021.171.171.17

M1.6M1.6M3M3M3M4M4M4M4M4M4M4M4M4M4M4M4M5M5M5M62@

120°

131322.422.422.425.725.725.7323238.438.438.438.451.151.151.151.151.151.176.576.576.5

9.5 9.512.67512.67512.67512.67512.67512.67512.67512.67512.67512.67519.02519.02519.02519.02519.02519.02519.02519.02528.5528.5528.55

11.43 11.43 17.27 17.27 17.27 17.27 17.27 17.27 17.27 17.27 17.27 17.27 17.2718.818.818.818.818.818.818.8

27.94 27.94 27.94

12.712.7

16.51 16.51 16.5123.523.523.523.519.219.2

29.72 29.72 29.72 29.72 29.72 29.72 29.72 29.72 29.7237.637.637.6

0.064± 0.007

0.141± 0.014 0.339± 0.035 0.565± 0.057 0.847± 0.085 1.059± 0.106

1.695± 0.170

2.540± 0.250

3.390± 0.340

M2X3M2X3M2X3M2X3M2X3M2X3M2X3M3X4M3X4M3X4M3X4M3X4M3X4M3X4M3X4M3X4M3X4M4X5M4X5M4X5M2X3M2X3M2X3

26 26 68 68 68117117213213355355482482582582582582794794794993993993

OUTPUT OUTPUT

LL

T T

ØDØD

ØD1 ØD1

ØD3 ØD2 ØD3 ØD2

ØD4 ØD4

T1T1

Ød Ød

SS

l3 l3

l2

l2l1

l1

CUSTOMER'S**INPUT

Fig. 2Fig. 1

CUSTOMER'S**INPUT

* or ** See Preceding Page

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Metric

0 10

13-23

HYSTERESIS BRAKES AND CLUTCHES

TECHNICAL INFORMATION

APPLICATION EXAMPLE:To select a brake to tension a 7-inch (178 mm) diameter pay-off reel in a system requiring total (web or strand) tension of 2 lbs. (8.9 N) and a process speed of 600 FPM.

BRAKE TORQUE (T) = Force (F) X Radius (D/2) T = 2 lbs. (8.9 N) X 3.5 in. (88.9 mm) = 7 lb. in. (791 Nmm) or T = 32 oz. X 3.5 in. (88.9 mm) = 112 oz. in.

SLIP SPEED (rpm) = linear velocity (V) (in/min) / circumference (in.) or linear velocity (V) (mm/min) / circumference(mm) rpm = 600 ft/min X 12 / (π X 7 in.) or (183 m/min X 1000) / (π X 178 mm) rpm = 327

ENERGY (W) = Energy Dissipation requirement is calculated using basic DISSIPATION horsepower formula X 746 watts/HP W = (T (lb. in.) X rpm / 63025) X 746 or (T (Nmm) X rpm / 7145221) X 746 W = (7 lb. in. X 327 rpm / 63025) X 746 = 27 watts or (791 Nmm X 327 rpm / 7145221) X 746 = 27 watts

Total Web/strandTension (F)

Velocity/Feed Rate (V)

HysteresisBrake

Full RollDia. (D)

3.77.5 15 22

3775 150 225

373746 1500

22503730

oz in lb in

1600 100

400

200

120

32

16

8

2.52.01.6 .1

10

1

.005

.01 .02 .03

.05

.1 .2 .3 1 2 5.0

.5 3

rpm100

200

400

800

1200

rpm172

5

3450

6000

12000

24000

example

WATTS

HORSEPOWER

Quick Check: The curves to the leftcan be used as a quick check to verify the kinetic power calculation. Simply locate the required torque on the vertical axis, move horizontally until you intersect the appropriate speed line, and then read vertically (up or down) to obtain the resulting watts or horsepower.

Selection: From the data on the following pages it can be seen that an S90HYB-120024 Hysteresis Brake which has a rated torque of 120 oz. in. (847 Nmm), a maximum speed capability of 12000 rpm, and an energy dissipation capability of 75 watts continuous, would be the proper selection for this application.

Note: In a clutch application, slip speed is the difference in rotational speed between the input and output members of the clutch assembly. In the above example, tensioning was being accom-plished with a clutch inserted between a take-up reel and a motor driving at 500 rpm. The actual slip used to compute the energy dissipation requirements would be 500 rpm (clutch input speed) - 327 rpm (clutch output speed = 173 rpm). This dif-ference in speed would obviously impact the result for energy dissipation.

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Metric

0 10

13-24

ØD ØC

EF

H

J

P N

G

FE

ØB ØA

K THREAD x L DEEP,3 HOLES EQ. SP.ON A ØM B.C.

R

HYSTERESIS CLUTCHES

MAINTENANCE-FREEINFINITELY ADJUSTABLETORQUE INDEPENDENT OF SLIP SPEED

COIL DATA:Voltage: 24V DC

∆ Shaft & Hub Tolerance (h8):8 mm -0.022

12 & 16 mm -0.02719 mm -0.033

34.93 & 41.28 mm -0.039

Maximum recommended speed is 3600 rpm.

Catalog Number *

METRIC COMPONENT

OutputInertiakg • m2

InputInertiakg • m2

Max.Dissipation

CapacityWatts

Max.Wattage@ rated

VDC@ 25°C

Min.Static Torque@ rated

VDC N • m

Max. Drag Torque

De-Energized & Degaussed

N • m

A± 0.4

B∆h8

C∆h8

0.8472.825

17.29 x 10-3

97.18 x 10-30.0110.050

88

S90HYCM108A08S90HYCM162A12

1.86 x 10-3

14.52 x 10-380

150108161.9

1619

812

Catalog Number *(Ref.)

D∆h8

E± 0.15

F± 0.4

J± 0.4

GMin.

H± 0.15

LMin.

N± 0.7

P± 0.3

Weightkg

R± 0.3

K M

92.7125.2

45.656.4

M4M5

2532

19.125.4

34.9341.28

3.40213.154

54.781.8

139.8184

0.70.7

50.863.5

4.35.6

9.514.3

S90HYCM108A08S90HYCM162A12

The projections shown are per ISO convention.

* To be discontinued when present stock is depleted.

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Metric

0 10

13-26

ELECTROMAGNETIC SPRING WRAP CLUTCHES

VERY FAST RESPONSEFRICTION-FREE OPERATIONUNIDIRECTIONAL INPUT

COIL DATA: Voltage: 24V DCResistance: 185 ± 10% ohms

SPECIFICATIONS:Static Torque: 30 lbf in. (3.4 N • m) Cycle Life: 1 x 106 @ 30 lbf in.Max. Operating Speed: 1200 rpmPower: 3.5 watts nominalOperating Temperature: 32°F to 140°F (0°C to 60°C)

Dimensions in ( ) are mm.

BBore

in. (mm)Catalog Number

INCH COMPONENT

.2505-.2530 (6.362-6.427)

.2505-.2530 (6.362-6.427)

.3130-.3185 (7.950-8.090)

.3130-.3185 (7.950-8.090)

*S90SWB–13AA04**S90SWB–13AB04*S90SWB–13AA05

**S90SWB–13AB05

BBore

mm (in.)Catalog Number

METRIC COMPONENT

*S90SWBM13AA06**S90SWBM13AB06*S90SWBM13AA08

**S90SWBM13AB08

6.01-6.09 (.237-.239)6.01-6.09 (.237-.239)8.01-8.09 (.315-.318)8.01-8.09 (.315-.318)

* Hub Input (HI)CW / Shaft Input (SI)CCW** Hub Input (HI)CCW / Shaft Input (SI)CW

3X120°

.31(7.87)

Ø.737(18.72)

Ø1.05(26.67)

.210 ± .003(5.33 ± 0.08)3 X

+.15-.051.10+3.81-1.2727.94

MAX.

*HI-CW/SI-CCW

*HI-CCW/SI-CW1.055 ± .010

(26.80 ± 0.25).755 ± .010(19.18 ± 0.25) .272 ± .010

(6.91 ± 0.25).096 ± .010

(2.44 ± 0.25)

Ø.5115 ± .0015(12.99 ± 0.038)

.103 ± .003(2.62 ± 0.08)2 X RAD. FULL

.945 ± .010(24 ± 0.25)

.013 ± .013(0.33 ± 0.33)

.157(4) MIN.

B

FLYING LEADS 24 AWG 12 in. (30 cm) LONG

( (

Ø1.312 ± .010(33.32 ± 0.25)

0 1Inch

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Metric

0 10

13-27

ELECTROMAGNETIC SPRING WRAP CLUTCHES

VERY FAST RESPONSEFRICTION-FREE OPERATIONHIGH-TORQUE TO SIZE RATIOUNIDIRECTIONAL INPUT

COIL DATA: Voltage: 24V DCResistance: 93±10% ohms Current: .257 amp.Leads Ends Stripped: 12.0 in. (300 mm) long standard .19/.31 in. (4.9/7.8 mm)

SPECIFICATIONS:Static Torque: 150 lb. in. (16 N • m) Max. Radial Bearing Load: 30 lb. (13.6 kg)Max. Operating Speed: 1000 rpmResponse Time, Voltage on at Full Speed: 150 msec Max. 40 msec Nom.Input Configuration: Hub input or shaft inputBearing: Reinforced polyetherimide with internal lubricant Weight: 1.0 lb (0.45 kg)

BBore

in. (mm)Catalog Number

INCH COMPONENT

.3755-.3780 (9.54- 9.60)

.3755-.3780 (9.54- 9.60)

.5010-.5035 (12.73-12.79)

.5010-.5035 (12.73-12.79)

*S90SWA–18AA06**S90SWA–18AB06*S90SWA–18AA08

**S90SWA–18AB08

BBore

mm (in.)Catalog Number

METRIC COMPONENT

*S90SWAM18AA10**S90SWAM18AB10*S90SWAM18AA12

**S90SWAM18AB12

10.010-10.079 (.3941-.3968)10.010-10.079 (.3941-.3968)12.011-12.078 (.4729-.4755)12.011-12.078 (.4729-.4755)

SPROCKET OR PULLEY

Ø .895-.905(22.73-22.99)

*HI-CW/SI-CCW

**HI-CCW/SI-CW

Ø 1.795-1.815(45.59-46.11) .297-.303

(7.54-7.70)3X

R MAX..61(15.50)

Ø 1.495-1.505(37.97-38.23)

70°50°

.189-.201(4.80-5.11)

3X120°

.871-.885(22.12-22.48)

1.10-1.14(27.94-28.96)R

.73-.77(18.54-19.56)

1.74-1.76(44.19-44.71)1.590-1.623

(40.38-41.23)

1.276-1.296(32.41-32.92)

.25(6.35)MAX.

MATINGLUG

.000-.032(0.00-0.82) .130-.136

(3.30-3.46)W/R FULL

.122-.142(3.09-3.61)

B

1.61-1.63(40.89-41.41)

SLOT

ONE OR MORE DOWEL PINS

OILITEBEARING

EXAMPLE OF YOUR MATING ASSEMBLY

* Hub Input (HI)CW / Shaft Input (SI)CCW** Hub Input (HI)CCW / Shaft Input (SI)CW

0 1Inch

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Metric

0 10

13-35

FLANGE-MOUNTED CLUTCHES

ZERO-BACKLASH ARMATUREFOR PARALLEL LOADS

COIL DATA:Voltage: 24V DC

Other voltages and dissimilar bore combinations are available as special order.

Keyway Dimensions

8WidthHeight

6Bore27

39.4

* Typical torque after burnishing; units shipped burnished.** Length equals K including initial working air gap at installation.∆Keyway not available in rotor.◊To be discontinued when present stock is depleted.

The projections shown are per ISO convention.

Catalog Number ◊

METRIC COMPONENT

RBore

EnergyDissipationN • m/min

RotorInertia

kgf • m • sec2

ArmatureInertia

kgf • m • sec2Max

.W

atta

ge Static* TorqueN • m Disengagement

msecEngagement

msec

Armature

∆ 66

0.561.13

55

237.3 400

1822

0.28 x 10-6

0.57 x 10-658

0.40 x 10-6

0.68 x 10-6

S90CF9M11A0606S90CF9M15A0606

Catalog Number ◊(Ref.)

Weightkg

TSet

ScrewsAir Gap

Length**MF LEDCBA

K

∆ 3.24

–M3

29.739.6

38.0550.77

0.10.2

31.339.2

12.8816.03

8.48.4

33.344.4

1.31.5

31.838.9

0.1/0.220.15/0.33

S90CF9M11A0606S90CF9M15A0606

ØC

L

ØR

ØM

OVER KNURL

ØA

ARMATURET, 2 PLACES90° APART

E

300 mm MIN.

FROTOR

ØB ØD, 4 PLACESEQ. SPACED

K**