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PHONE: 516.328.3300 • FAX: 516.326.8827 • WWW.SDP-SI.COM

0 1Inch

FUNCTION:Multiplate slip clutches control torque for intermittent, continuous, or overload slip. It will drive in both directions, slip when the torque setting is reached, and resume driving as the load is reduced. These clutches are excellent as continuous or intermittent drag brakes, protection against overloads, for “soft starts,” slip at the end of a stroke, as friction hinges, for screwing on container caps, etc.

CONSTRUCTION:The clutch consists of two assemblies: a cartridge and a housing (see cutaway above). The cartridge is set-screwed or keyed to the input shaft. The housing is either set-screwed or keyed to the output shaft or, as shown, is attached to the output gear or pulley with a bronze bearing to allow relative motion between the input shaft and the output gear/pulley. Torque is transmitted from the flats on the hub to the mating flats on the inner plates, through the friction pads to the outer plates, through the torque pins to the housing and the output gear/pulley. The torque level is controlled by compressing the springs with the adjusting nut. For a fixed torque clutch, a collar is attached to the hub in a fixed position instead of the adjusting nut. In operation, either the input shaft or the housing can be the input member, with the other member being driven.

CAPACITY:The clutch capacity as noted in the catalog is based on continuous operation at 50 rpm for over 25 million cycles. Torque, rpm, duty cycle and life are interdependent. A reduction of any of these will allow an increase in any other. Running at 25 rpm will allow twice the torque, or running for only 10% of the cycle will allow higher rpm, etc.The limit is based on heat buildup measured in watts: English Unit Watts = Torque (lbf-in.) x rpm x 0.0118 x % Duty CycleMetric Unit Watts = Torque (N • m) x rpm x 0.104 x % Duty Cycle

For typical applications, see examples on page 13-?.

INNER PLATESMATE WITHFLATS ON HUB

TORQUE PINS

INPUTSHAFT

HOUSINGCARTRIDGE

DETENTPLATE

OUTPUTPULLEY

THRUSTPLATE

FRICTION PADS

SPRINGS

HUB

INNER PLATES(DRIVING)

OUTER PLATES(DRIVEN)

TORQUEADJUSTINGNUT

MULTIPLATE IN-LINE SLIP CLUTCHES

13-3D820

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PHONE: 516.328.3300 • FAX: 516.326.8827 • WWW.SDP-SI.COM

IN-LINE SLIP CLUTCHES

MULTIPLATE DESIGN

MATERIAL:Fig. 1 - Housing - Zinc Plated Steel Plates - Brass Friction Materials - Proprietary (Nonasbestos)Fig. 2 - Housing - Aluminum Plates - Brass Friction Materials - Proprietary (Nonasbestos)

FEATURES:Fully adjustable within rating limits Low stick / slip ratioContinuous slip within dissipation limitAvailable with bronze bearing in hub end so thatgear, pulley, etc. can be mounted on hub “D1”Available with other bores as special order

Catalog Number

METRIC COMPONENT

Std.+0.05

0

Max. Bore Spec.

DBody Dia.± 0.5

D1Hub Dia.± 0.05

LLength± 0.05 Fr

ictio

nSu

rfac

esl1Hub

Length Hub End

Cart. End Watts

Bore Depthd Bore

Dis

sip.

*Po

werTorque*

RangeN • cm

@ 50 rpm

26.933.325.4 8 10 19.3 6.3

15.8

S98CA6MMEC250827S98CA6MMEC250833 7.8

19.125.4

0.23 to 22.61.13 to 113

28

Fig. 1

Catalog Number Std.+0.05 0

Max. Bore Spec.

DBody Dia.± 0.5

D1Hub Dia.± 0.05

LLength± 0.05 Fr

ictio

nSu

rfac

esl1Hub

Length Hub End

D2 D3Cart. End Watts

Bore Depthd Bore

Dis

sip.

*Po

werTorque*

RangeN • cm

@ 50 rpmFig. 2

S98CA6MMOC320838S98CA6MMOC381063S98CA6MMOC511273S98CA6MMOC701273

38.163.5 72.9

614.52943

31.838.150.869.9

810 12

1013 16

19.325.735.141.4

6.3 9.4 12.7

25.444.5 47.7

12.719.1 25.4

8 12

12

1.13 to 1135.65 to 2829.04 to 56411.3 to 847

2.383.17 4.78

26.9833.3242.4760.33

HOUSING

ADJUSTABLETORQUE

ADJUSTINGNUT

L

LHOUSING

ADJUSTING NUT

CARTRIDGE

Fig. 1

Fig. 2

Ød

ØD33 PINS @ 120°ON BCD D2

ADJUSTABLETORQUE

ØD

ØD

ØD1

ØD1

l1

l1

2 x l1

CARTRIDGE

Ød

Fig. 1

Fig. 2

* See Technical Applications page.

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0 1Inch

UNLIMITED APPLICATIONS:*Intermittent motion Torque limiting Indexing Hinging Phase adjustment Many more Feeding

*The ingenuity of engineering has led to applications with labelers, indexing, film transport, instrumentation, business machines, computer peripherals, packaging, mailing, plotters, paper feeds and many more. We supply stock clutches or we work with you to develop units for your specific applications.

TYPICAL MULTIPLATE SLIP CLUTCH APPLICATIONS:

S98CA6(-,M) tech pages–XP2 of 2

05-18-98 GWREV: 5-23-19 JC

D815 PD820 P13-5D810 P13-4D805 P13-4

TIMING BELT ON HOUSINGTiming belt drives housing. Torque transmitted through adjustable pressure plates to shaft. Also operates as shaft input to timing belt.

SHAFT-TO-SHAFT CONTROLEither shaft as input. Fixed torque transmitted through pressure plates. Shafts must be journalized. Also can be adjustable torque.

SLIP CARTRIDGE WITH GEARPressure pads transmit torque directly to gear for space saving package.

CLUTCH WITH A MODIFIED GEARTorque transmitted directly from gear through pins to adjustable pressure plates.

KNOB WITH TORQUE PROTECTIONKnob connected directly to housing. Fixed torque transmitted to shaft.Will slip above preset torque.

BRAKE TO FRAME OF MACHINEOuter pressure plates held to machine frame. Adjustable braking pressure transmitted to shaft.

“SINGLE” REVOLUTION CLUTCHInput shaft turns continuously. Output shaft turns when latch is disengaged. Single revolution, partial revolution, or multi-revolutions can be designed.

CONSTANT TORQUE – SUPPLY OR REWIND SPOOLSlip clutch mounted directly to spool will give constant torque. Mounted directly to constant diameter cylinder will give constant tension. Many variations available to control wire supply system.

YOURSPOOL

LATCH

MULTIPLATE IN-LINE SLIP CLUTCH APPLICATIONS

13-5D820

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Metric

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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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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