spring-wrapped slip clutches i · 15 16 13-6 phone: 516.328.3300 • fax: 516.326.8827 • 01 inch...

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

0 1Inch

SPRING-WRAPPED SLIP CLUTCHES

FEATURES:Long life under continuous slip conditions.Unidirectional or bidirectional operation.Same or different clockwise and counterclockwise torques.Precise and stable limit torque calibration (range: 1.0 to 480 ozf in.).Same torque at breakaway as at high slip velocities.Mounting provisions for gear, sprocket or pulley.Corrosion-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 addition, our engineers will modify designs to meet your specific requirements in such areas as: Configuration Driving arrangement Limit torques from a fraction of an ozf in. to several lbf ft. Calibration of torque to a tolerance of ± 5% Different limit torques for the two directions of rotation Spring 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 “K” and three tapped holes “N” 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 “N”. Concentricity of pilot diameter “K” to bore “C” is .001 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.

The life of the slip couplings & clutches is defined as the number of hours of continuous slip required to cause a deviation of 10% from the initial calibrated torque value. Extensive life tests have been performed on a number of standard units. The “Life Expectancy Curves” are designed for approximating the life span of standard slip clutches and couplings.

Continued on the next page

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EXAMPLE: If a slip clutch is to provide a torque limit of 50 ozf in. at a continuous slip speed of 100 rpm for 500 hours, the smallest item which can be calibrated is from the S9940Y–SWC15A.. series.

The upper limit torque for this unit is 80 ozf in.

Limit Torque Ratio = Required TorqueUpper Limit Torque

= 50/80 = 0.63

From “Life Expectancy Curves” 100 rpm & 0.63 ratio:

Life = 2,800,000 Rev =2,800,000 Rev

100 Rev / Min. x 60 Min. / Hour= 466.7 Hrs.

The 466.7 hours life value is less than desired 500 hours.The next larger slip clutch belongs to the S9940Y–SWC18A series.The upper limit torque for this unit is 120 ozf in.

Limit Torque Ratio = 50/120 = 0.42

From “Life Expectancy Curves” for 100 rpm & 0.42 ratio:

Life = 4,800,000 Rev = 4,800,000 Rev100 Rev / Min. x 60 Min. / Hour

= 800 Hrs.

A S9940Y–SWC18A.. series clutch will provide the desired life.

3,0701,420

1,420 620 620

250

250 100

TYPICAL ELEMENT LIFE(STANDARD CATALOG MODELS)

rpm TorqueHours of Continuous

Slip inEach Direction

Hours of OperationDuty Cycle:

1 Sec. Slip, 1 Sec. Rest

1/2 Upper LimitUpper Limit




25

50

100

200

6,5003,040

3,0401,420

1,420 620

620 250

.25

.30

.35

.40

.50

.60

.70

.80

.901.00

0 25 50 75 100 125 150 175 200

10 x 10 6

9 x 10 6

8 x 10 6

7 x 10 6

6 x 10 6

5 x 10 6

4 x 10 6

3 x 10 6

2 x 10 6

10 6

LIFE

(REV

OLU

TIO

NS

OF

SLIP

)

LIM

IT T

ORQ

UE

RATI

O

LIFE EXPECTANCY CURVESCONTINUOUS SLIP SPEED (rpm)

The table entitled “Typical Element Life” provides life in hours of operation for some typical slipspeeds and torques of standard slip elements. The torque is presented in terms of 1/2 and full upper limit torque rating of a given slip element.

AVERAGE POWER DISSIPATION (P)

Continuous Slip P = .00074 TN

Cycle Slip P = .00074 TNC

where: T = Slip Torque [ozf in.] N = Average Slip Speed [rpm]

Duration of Slip / CycleDuration of Cycle

C =

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COVERED BY U.S. PATENTS AND PATENTS PENDING

OUTPUT OUTPUT

ADB

AD

G F G F

ØLØL

ØH ØH

ØK ØJ ØK ØJ

ØM ØM

NN

ØC ØC

EEB

CUSTOMER'S**INPUT

Fig. 2Fig. 1

CUSTOMER'S**INPUT

Catalog Number

INCH COMPONENT

BA FC

Bore+.0010 -.0000

ED GH

Dia.Max.

Max

. Dis

sip.

Pow

er W

atts

JDia.

Max.

Upper* Limit

Torque ozf in.

LDia.

MDia. N

KDia.+.000 -.001

Fig.No.

111112211111112222111111

.18

.18

.21

.21

.21

.23

.23

.23

.23

.25

.25

.29

.29

.29

.29

.29

.29

.29

.32

.32

.32———

1.051.051.241.241.241.391.391.391.391.671.671.881.881.881.881.881.881.881.881.881.882.302.302.30

.72 .72 .85 .85 .85 .94 .94 .94 .941.201.201.341.341.341.341.341.341.341.311.311.311.9751.9751.975

.1248

.1873

.1873

.2498

.3123

.2498

.3123

.2498

.3123

.2498

.3123

.3123

.3748

.4998

.2498

.3123

.3748

.4998

.3123

.3748

.4998

.6250

.7500

.8750

.03

.03

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.046

.046

.046

.080

.080

.095

.095

.095

.130

.130

.130

.130

.130

.130

.130

.130

.130

.130

.130

.130

.130

.130

.130

.130

.225

.225

.225

S9940Y-SWC06A02S9940Y-SWC06A03S9940Y-SWC10A03S9940Y-SWC10A04S9940Y-SWC10A05S9940Y-SWC13A04S9940Y-SWC13A05S9940Y-SWC15A04S9940Y-SWC15A05S9940Y-SWC18A04S9940Y-SWC18A05S9940Y-SWC19A05S9940Y-SWC19A06S9940Y-SWC19A08S9940Y-SWC22A04S9940Y-SWC22A05S9940Y-SWC22A06S9940Y-SWC22A08S9940Y-SWC26A05S9940Y-SWC26A06S9940Y-SWC26A08S9940Y-SWC30A10S9940Y-SWC30A12S9940Y-SWC30A14

#2-56#2-56#4-40#4-40#4-40#6-32#6-32#6-32#6-32#6-32#6-32#8-32#8-32#8-32#8-32#8-32#8-32#8-32#10-32#10-32#10-321/4-20

2 @ 120°

.51

.51

.88

.88

.881.011.011.261.261.511.511.511.511.512.012.012.012.012.012.012.013.013.013.01

.45

.33

.68

.68

.68

.68

.68

.68

.68

.68

.68

.74

.74

.74

.74

.74

.74

.74

.74

.74

.741.101.101.10

.63

.631.001.001.001.251.251.501.501.871.871.871.871.872.252.252.252.252.622.622.623.003.003.00

.374

.374

.499

.499

.499

.499

.499

.499

.499

.499

.499

.749

.749

.749

.749

.749

.749

.749

.749

.749

.7491.1241.1241.124

.500

.500

.650

.650

.650

.925

.925

.925

.925

.780

.7801.1701.1701.1701.1701.1701.1701.1701.1701.1701.1701.4801.4801.480

9 ± 1

20 ± 2

48 ± 5

80 ± 8

120 ± 12

150 ± 15

240 ± 24

360 ± 36

480 ± 50

#0-80.08 DP.

#1-72.10 DP.

#2-56.11 DP.

#4-40.17 DP.

#8-32.210 DP.

1.0 1.0 2.4 2.4 2.4 5.7 5.7 9.5 9.5141418181828282828434343575757

* or ** See page 13-5

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UNWIND TENSION CONTROLBrake mounted on shaft of unwind spool or bobbin.

Film

Brake

Film Unwind - Tension provided by hysteresis units.

Information required: (Example) Full diameter = 6 in. Empty core diameter = 3 in. Average tension = 1 lbf Velocity = 150 ft./min.

How to size: Avg. radius = [Full roll dia. + Empty dia.] / 4 = (6 +3) / 4 = 2.25 in. Avg. torque (lbf in.) = avg. tension (lbf) x avg. radius (in.) = 1 x 2.25 = 2.25 lbf in.

1. Select Catalog Number S90MCC-MTL37505 based on 2.25 lbf in.2. Check Operating Curve The Max. rpm occurs at the min. radius Max. rpm = Velocity / (Empty dia. x π) = (150 ft./min.) / [(0.25 feet) x π] = 191 rpm 2.25 lbf in. at 191 rpm is okay.

NIP ROLL OR PULLEY TENSION CONTROL

Coil Winding - Constant tension provided by hysteresis unit.

Information required: (Example) Pulley diameter or nip roll = 3 in. Tension = 2.5 lbf Velocity = 300 ft./min.

How to size: Torque (lbf in.) = Tension x Radius = 2.5 lbf x [(3 in.) / 2] = 3.75 lbf in.

Brake

Motor

Bobbin

Film Tensioning - Constant tensioning supplied by hysteresis unit.

ClutchMotor

1. Select Catalog Number S90MCC-MTL37505 based on 3.75 lbf in.2. Check Operating Curve Max. rpm = (300 ft./min.) / (0.25 ft. x π) = 382 rpm 382 rpm is too high for continuous duty on the S90MCC-MTL37505 unit.3. Select Catalog Number S90MCC-MTL62510

MAGNETIC CLUTCHES & COUPLINGS

APPLICATIONS – EXAMPLES

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1. Select Catalog Number S90MCC-MTL37505 based on 3.75 lbf in.2. Check Operating Curve Max. rpm = (300 ft./min.) / (0.25 ft. x π) = 382 rpm 382 rpm is too high for continuous duty on the S90MCC-MTL37505 unit.3. Select Catalog Number S90MCC-MTL62510

CYCLING

Clutch

Bottle Capping - Constant torque provided by a hysteresis clutch.

Information required: (Example) Slip rpm = 350 rpm Torque = 8 lbf in. Duty cycle (% slip time of total cycle time) = 25%

How to size:1. Select Catalog Number S90MCC-MTL62510 based on 8 lbf in.2. Check Operating Curve 350 rpm is high, but as the duty cycle is only 25%, the Catalog Number S90MCC-MTL62510 is okay.

OVERLOAD PROTECTION TORQUE LIMITING SOFT START (Motor Horsepower Method)

Torque Limiting - Hysteresis clutch provides overload protection.

Information required: (Example) Motor hp = 1/10 hp Motor rpm = 900 rpm How to size: Torque (lbf in.) = (Motor hp x 63000) / Motor rpm = [1/10 hp x 63000] / 900 = 7 lbf in.

Chain andSprocket Drive

Motor

Material Handling - Hysteresis clutch can provide overload protection and soft start.

Sub ShaftAdapter

Motor

1. Select Catalog Number S90MCC-MTL62525 based on 7 lbf in.2. Check Operating Curve 7 lbf in. is at the upper limit of safe continuous operation, but is okay.

ClutchConveyor

Coupling


APPLICATIONS – EXAMPLES

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ADVANTAGES:No electricityNo breakaway torqueConstant torque independent of shaft (rotor) speedNo contacting or wearing partsNo friction elements – same smooth torque year after yearNo magnetic particles to leak or contaminate end productOperable in some of the most difficult environmentsBrake (with shaft) and clutch (with hollow shaft) availableCustom designs available

APPLICATIONS:Fig. 1 As a CouplingThis is for load protection or torque limiting. The coupling style unit is directly connected to a motor and turns at the same speed as the motor until the torque is reached. At this point it will slip and still generate the maximum torque.

Fig. 2 As a ClutchThe unit is connected to a motor by a timingbelt or gear. The housing is driven and theshaft is the output end.

Fig. 3 As a Payout BrakeBrake is stationary and the reel or materialis fitted to the output shaft. The tension onthe material will vary with the diameter.

HOW THEY OPERATE:For Maximum TorqueAll important internal clearances are ground to tolerances of less than .001 in. (0.025 mm). Magnet assemblies surround hysteresis assembly. When like poles face each other, they produce maximum magnetic saturation of the hysteresis disc, forcing lines of flux to travel circumferentially through the hysteresis disc.

For Minimum TorqueWhen opposite poles face each other they produce minimum saturation of the hysteresis disc. The lines of flux travel through the hysteresis disc.

Combinations of adjustment angles between the two extremesgive infinite adjustability. Because there are no contacting surfaces, the setting can be maintained indefinitely.

25%

50%

75%

100%

Fig. 2

25%

50%

75%

100%

Fig. 3

25%

50%

75%

100%

Fig. 1

N

S

N

S

S

N

HysteresisAssembly

MagneticAssemblies

Minimum Torque

S N

N S

N

HysteresisAssembly

MagneticAssemblies

S

Maximum Torque


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0 1Inch


ContinuousDuty

NotRecommended

0.0000.1130.2260.3390.4520.5650.6780.7910.9041.0171.130

012345678910

1.197 10.6

0 300 600 900 1200TO

RQU

E (lb

f in.

)

SLIP (rpm)

IntermittentDuty

TORQ

UE

(Nm

)

ContinuousDuty

NotRecommended

0.000

0.028

0.056

0.085

0.113

0.141

12

16

20

8

4

00 600 1200 1800 2400 3000 3600

TORQ

UE

(lbf i

n.)

SLIP (rpm)

IntermittentDuty

TORQ

UE

(Nm

)

ContinuousDuty

NotRecommended

IntermittentDuty

0

1

2

3

4

5

0 300 600 900 1200 1500 1800

TORQ

UE

(lbf i

n.)

SLIP (rpm)

0.000

0.113

0.226

0.339

0.452

0.565

TORQ

UE

(Nm

)

0.014

0.011

0.008

0.006

0.003

0

2.05

ContinuousDuty

IntermittentDuty

NotRecommended

1.64

1.23

.82

.41

00 1500 3000 4500 6000 7500

TORQ

UE

(Nm

)

TORQ

UE

(ozf

in.)

SLIP (rpm)S90MCCM513...

ContinuousDuty

NotRecommended

0

5

10

15

20

25

0 300 600 900 1200

TORQ

UE

(lbf i

n.)

SLIP (rpm)

0.000

0.565

1.130

1.695

2.260

2.825

IntermittentDuty

TORQ

UE

(Nm

)

ContinuousDuty

NotRecommended

7.90

6.77

5.65

4.52

3.39

2.26

1.130

70

60

50

IntermittentDuty 30

20

40

10

00 200 400 600 800 1000

TORQ

UE

(lbf i

n.)

SLIP (rpm)

TORQ

UE

(Nm

)S90MCC-MTL25001S90MCCMMTL0601

S90MCC-MTL37510S90MCC-MTL50010S90MCC-MTL62510S90MCCMMTL1612

S90MCC-MTL50025S90MCC-MTL62525S90MCCMMTL1628

S90MCC-MTL37505S90MCCMMTL0806

S90MCCMM806...


OPERATING CURVES

HOW TO USE THE CURVES:Find the slip rpm on the X-axis and the torque on the Y-axis. Notice the areas that represent safe, continuous duty; intermittent duty, such as five minutes on, five minutes off; and the area which is not recommended. Operating above that line for any period of time will cause overheating and possible damage to the unit.

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TorqueRangelbf in.

AShaft

Length

BShaft Dia.

+.000 -.001

Weightlb.Catalog Number

INCH COMPONENT

.003 – .018

.003 – .018

.010 – .060

.010 – .060

.010 – .130

.010 – .130

.51

.98

.51

.98

.51

.98

.16

.16

.16

.16

.16

.16

3/163/163/163/163/163/16

S90MCC-5130151S90MCC-5130198S90MCC-5130651S90MCC-5130698S90MCC-5131351S90MCC-5131398

Ø1.02

.04.86

ØB

0

A

Ø.394BOTH ENDS

M3-0.5 TAP .18 DEEP3X EQ. SP. ON Ø.610 B.C.BOTH ENDS


.130 lbf in. TORQUENONELECTRICNO WEARING PARTSNO FRICTION

MATERIAL: Housing and Shaft - Stainless Steel


0 1Inch

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16

Catalog Number

INCH COMPONENT

S90MCC-MTL25001S90MCC-MTL37505S90MCC-MTL37510S90MCC-MTL37525S90MCC-MTL50010S90MCC-MTL50025S90MCC-MTL62510S90MCC-MTL62525

BBore+.001 -.000

LLength L1

DDia.

dDia.

ADia.

TorqueRangelbf in.

.250

.375

.375

.375

.500

.500

.625

.625

1.652.442.523.112.523.112.523.11

1.422.122.202.672.202.672.202.67

1.872.713.234.573.234.573.234.57

1.952.763.314.683.314.683.314.68

.8661.3781.8502.4411.8502.4411.8502.441

.06 – 1.25 .18 – 5.00 .50 – 10.601.00 – 25.00 .50 – 10.601.00 – 25.00 .50 – 10.601.00 – 25.00

Catalog Number(Ref.)

S90MCC-MTL25001S90MCC-MTL37505S90MCC-MTL37510S90MCC-MTL37525S90MCC-MTL50010S90MCC-MTL50025S90MCC-MTL62510S90MCC-MTL62525

ESet

Screw Thread Depth BoltCircle

KeywayF

HubDia.

Approx.Weight

lb.

M4

M5

M5

M5

M4

M5

M5

M5

.31

.39

.39

.47

.39

.47

.39

.47

1.2601.8902.3753.0002.3753.0002.3753.000

—

—

1/8

3/16

.751.06

.991.38

.991.381.461.38

.732.283.578.953.578.953.578.95


ØAØd

SET SCREW2 PLACES

90° APART

ØD

L

L1

ØF

.08

ØB THRU WITH KEYWAY (.625 BORE ONLY)

E

(3X) TAPPED HOLES ON

BOTH ENDS

25 lbf in. TORQUENONELECTRICNO WEARING PARTSNO FRICTIONHOLLOW BORE

MATERIAL: Housing - Aluminum, Black Anodized Finish Dial - Steel, Black Oxide Finish

13-15REV: 04.11.17 KT

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TorqueRangelbf in.

BBore+.001 -.000

Weightlb.Catalog Number

INCH COMPONENT

3 – 703 – 703 – 70

14.214.214.2

.625

.750

.875

S90MCC-80610S90MCC-80612S90MCC-80614

Ø4

Ø.41 X .31DEEP 2X BOTHENDS FOR TORQUEADJUSTMENT

ØB

CLAMP COLLAR

4.122.81

.67.15

Ø6.30

Ø2.441

1/4-20 TAP .31 DP.3X EQ. SP. ON A Ø2.875 B.C. BOTHENDS

(2) 1/4-28 SET SCREWS 90°APART FOR LOCKING TORQUEADJUSTMENT

+.000-.001

Keyway Dimensions

.750.625 .875.187.837

.187

.709 ——

w +.002/-.000h +.010/-.000

Bore

w

h


70 lbf in. TORQUENONELECTRICNO WEARING PARTSNO FRICTIONHOLLOW BORE

MATERIAL: Housing - Aluminum, Black Anodized Finish Dial - Steel, Black Oxide Finish

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TECHNICAL INFORMATION

FEATURES:Torque proportional to input current. Torque virtually independent of slip speed.Smooth stable, noise-free operation.Long-life no-wearing components.Maintenance-free.Infinitely adjustable.

APPLICATIONS:Tensioning of wire, cable, films, paper, etc.Positioning of fuel flow controls, film processorsBraking for motors and dereelingLoad simulation for motor testing, fuse testing, etc.

OPTIONS:Nonstandard coil voltages Special mounting configurationsModified shafts

Hysteresis clutches provide an efficient, smooth, electrically controllable link between a motor and a load. While pre-senting integral ball bearing supported input and output shafts, the clutch features a field (electromagnet) assembly that is prevented from rotating by fixing to a bulkhead. When the coil is energized, the input and output shafts are coupled by magnetic fluxes, thus driving the load. The torque transmitted is proportional to the current supplied to the device.

TORQUE AS A FUNCTION OF INPUT CURRENT:

When a field setting is approached from zero current, it will produce less torque than if approached from prior current because of residual magnetism. Accurate and repeatable torque outputs are delivered when the setting is approached from the same direction.

100%

0

0

CURRENT

TORQ

UE

100%

HYSTERESIS BRAKES & CLUTCHES

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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 lbf (8.9 N) and a process speed of 600 FPM.

BRAKE TORQUE (T) = Force (F) X Radius (D/2) T = 2 lbf (8.9 N) X 3.5 in. (88.9 mm) = 7 lbf in. (791 Nmm) or T = 32 ozf X 3.5 in. (88.9 mm) = 112 ozf 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 (lbf in.) X rpm / 63025) X 746 or (T (Nmm) X rpm / 7145221) X 746 W = (7 lbf 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

ozf in. lbf 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 fol-lowing pages it can be seen that an S90HYB-120024 Hysteresis Brake which has a rated torque of 120 ozf in. (847 Nmm), a maximum speed capability of 12000 rpm, and an energy dissipation ca-pability 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.

HYSTERESIS BRAKES & CLUTCHES

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1

2

3

4

5

6

7

8

9

10

11

12

13

T

14

15

1613-23


0 1Inch

HYSTERESIS CLUTCHES

MAINTENANCE-FREEINFINITELY ADJUSTABLETORQUE INDEPENDENT OF SLIP SPEED

COIL DATA:Voltage: 24V DC

Maximum recommended speed is 3600 rpm

Catalog Number *

INCH COMPONENT

OutputInertia

lbf in. sec2

InputInertia

lbf in. sec2

Max.Dissipation

CapacityWatts

Max.Wattage@ rated

V DC@ 25°C

Min.Static Torque@ rated

V DC ozf in.

Max. Drag Torque

De-Energized & Degaussed

ozf in.

ADia.± .015

BDia.

+.0000 -.0005

CDia.

+.0000 -.0005

30.0200.0400.0

8.3 x 10-3

371.0 x 10-3

860.0 x 10-3

.702.507.00

888

S90HYC-231A19S90HYC-500A50S90HYC-638A50

1.4 x 10-3

44.5 x 10-3

128.5 x 10-3

20120150

2.3125.0006.375

.3750

.7497

.7497

.1875

.5000

.5000

Catalog Number *(Ref.)

DDia.

+.0000 -.0005

E± .005

F± .015

J± .015

GMin.

H± .005

LMin.

N± .025

P± .010

Weightlb.

R± .010K M

Dia.

2.7504.5004.930

1.1252.2202.220

#6-32#10-32#10-32

.751.251.25

.3751.0001.000

.87501.62501.6250

1.6514.0029.00

1.7752.7503.220

3.9206.8157.245

.020

.030

.030

1.2502.5002.500

.125

.220

.220

.250

.562

.562

S90HYC-231A19S90HYC-500A50S90HYC-638A50

* To be discontinued when present stock is depleted.

.375F

R

P NJ

E

ØCØD

K THREADX L DEEP, 3 HOLESEQUALLY SPACEDON A ØM B.C.

E

ØB

ØA

FF

GH

I

R

1

2

3

4

5

6

7

8

9

10

11

12

13

T

14

15

1613-24


0 1Inch

1/43/81/23/41

1-1/41-1/21-3/4

22-1/42-1/22-3/4

33-1/23-3/4

44-1/44-1/2

55-1/2

66-1/46-1/26-3/4

77-1/47-1/27-3/4

88-1/48-1/28-3/4

99-1/49-1/29-3/4

1010-1/410-1/210-3/4

1111-1/411-1/211-3/4

1212-1/412-1/212-3/4

Determine clutch or brake torque valueWith the inertia value calculated, determine the torque requirement for the function.

A) For Overrunning and Start-Stop(random start-stop)

Where:T = Torque required from wrap spring, lbf in.WR2 = load inertia, lbf in.2 rpm = shaft speed at clutch locationt = time to engagement (.003 for clutch), sec.

Frictional (drag) torque is the torquenecessary to overcome static friction. It may be measured by a spring-scale or by dead-weights, applied to a known moment arm so gradually as to make inertia negligible. It is that torque found just sufficient to induce motion.

Calculate load inertia (WR2)Use the inertia chart to determine the inertia of the application components. To determine WR2

of a given shaft or disc, multiply the WR2 from the chart by the length of shaft or thickness of disc in inches.

NOTE: For hollow shafts, subtract WR2 of the I.D. from the WR2 of the O.D. and multiply by length.

In order to calculate the inertias of components which are made of material other than steel, use the multipliers found in the conversion chart (below) to establish the inertias of these components.

Inertia Conversion Chart In order to determine the inertia of a rotating member (shaft, disc, etc.) of a material other than steel, multiply the inertia of the appropriate steel diameter from the chart by:

Material Multiplier

Bronze 1.05Steel 1.00Iron .92Powdered Metal Bronze .79Powdered Metal Iron .88Aluminum .35Nylon .17

.00011 .00055 .00173 .00864 .0288 .072 .144 .288 .432 .72 1.152 1.584 2.304 4.176 5.472 7.056 9.07211.37617.2825.48836.0042.62449.6857.888

INERTIA OF STEEL SHAFTING (Per Inch of Length or Thickness)

Dia.in.

WR2

lbf in.2Dia.in.

WR2

lbf in.2Dia.in.

WR2

lbf in.2

66.816 77.04 87.984100.656113.904128.88144.00162.72182.88203.04223.20252.00277.92306.72338.40371.52407.52444.96486.72529.92576.00626.40679.68735.84

803.52 858.24 924.48 995.04 1068.48 1147.68 1229.75 1317.60 1404.00 1815.84 2314.08 2910.24 3611.52 4433.76 5389.92 6492.96 7757.28 9195.8410827.3612666.2414731.2017036.6419604.1622452.48

1313-1/413-1/213-3/4

1414-1/414-1/214-3/4

15161718192021222324252627282930

*

WR2 x rpm 3700 x tT = + friction torque*

INERTIA AND TORQUE VALUES

CLUTCH & BRAKE TECHNICAL INFORMATION

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1

2

3

4

5

6

7

8

9

10

11

12

13

T

14

15

1613-34


0 1Inch

LOAD

PRIMEMOVER

BELT OR CHAINHUB

ROTOR

ANTIROTATION TAB

GEAR OR PULLEY

ARMATUREFIELD

Shaft-Mounted ClutchesS90CS9 Series

LOAD

PRIMEMOVER

Flange-Mounted ClutchesS90CF9 Series

BELT OR CHAINHUB

ROTOR

GEAR OR PULLEY

ARMATUREFIELD

LOADPRIMEMOVER

HUBROTOR

ANTIROTATION TAB

ARMATUREFIELD

Shaft-Mounted Clutch CouplingsS90CSC Series

PRIMEMOVER

Flange-Mounted Clutch CouplingsS90CFC Series

HUBROTOR

ARMATUREFIELD

LOAD

CLUTCH APPLICATIONS

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1

2

3

4

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7

8

9

10

11

12

13

T

14

15

1613-35


0 1Inch

SHAFT-MOUNTED CLUTCHES

ZERO-BACKLASH ARMATUREFOR PARALLEL LOADS


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

* Typical torque after burnishing; units shipped burnished.** For Catalog Number: -11A0404, -11A0505, initial working air gap at installation shall be .004/.009. -15A0404, -15A0505, -17A0404, -17A0505, initial working air gap at installation shall be .004/.009. -22A0505, -26A0606, -26A0808, initial working air gap at installation shall be .006/.013. -30A1010, initial working air gap at installation shall be .006/.013.∆ Keyway not available in rotor.§ No knurl available; S90CS9-26A supplied with (3) #8-32 holes on a Ø1.375 B.C. S90CS9-30A supplied with (3) #8-32 holes on a Ø1.750 B.C.

Catalog Number

INCH COMPONENT

EnergyDissipationlbf ft./min.

RotorInertia

lbf in. sec2

ArmatureInertia

lbf in. sec2Max

.w

atta

geStatic Torquelbf in.

Disengagementmsec

Engagementmsec

Armature


Weightlb.

MDia.F H

Max. LEDCRef.BA

Dia.K

Max.

1.251.251.531.531.781.782.262.632.633.27

.87 .871.101.101.321.321.521.751.752.01

.56

.56

.75

.75

.91

.911.161.341.341.60

.13

.13

.19

.19

.19

.19

.19

.19

.19

.19

.38

.38

.50

.50

.50

.50

.44

.50

.50

.50

.03

.03

.06

.06

.06

.06

.06

.06

.06

.06

.22

.22

.38

.38

.30

.30

.36

.34

.34

.40

1.381.381.831.831.851.852.202.472.472.81

.33

.33

.33

.33

.33

.33

.37

.47

.47

.83

.507

.507

.631

.631

.631

.631

.756

.999

.9991.374

.2

.2

.4

.4

.6

.61.11.41.43.3

S90CS9-11A0404S90CS9-11A0505S90CS9-15A0404S90CS9-15A0505S90CS9-17A0404S90CS9-17A0505S90CS9-22A0505S90CS9-26A0606S90CS9-26A0808S90CS9-30A1010

∆∆

§

§§

**RBore

.2500

.3125

.2500

.3125

.2500

.3125

.3125

.3750

.5000

.6250

55

10101515408080

125

5 5 5 5 6 6 8.5 9.5 9.515

12812813013010810875656544

175175295295420420

1400260026002900

18182222272732353545

5588

101012151518

3.5 x 10-5

3.5 x 10-5

5.9 x 10-5

5.9 x 10-5

7.3 x 10-5

7.3 x 10-5

33.4 x 10-5

80.0 x 10-5

80.0 x 10-5

180.0 x 10-5

2.6 x 10-5

2.6 x 10-5

5.2 x 10-5

5.2 x 10-5

11.4 x 10-5

11.4 x 10-5

32.3 x 10-5

62.0 x 10-5

62.0 x 10-5

203.0 x 10-5

S90CS9-11A0404S90CS9-11A0505S90CS9-15A0404S90CS9-15A0505S90CS9-17A0404S90CS9-17A0505S90CS9-22A0505S90CS9-26A0606S90CS9-26A0808S90CS9-30A1010

∆∆

*

§

§§

B C

ED

12 in. MIN.

2 SETSCREWS90° APART

F ROTOR

HK** ARMATUREL

ØR

ØM

ØA

Keyway Dimensions

.625WidthHeight

.500.375.3125.250Bore.125.564

.094

.425.094.364

.062

.286.188.709

Nom.Resist.

ohms

I

R

1

2

3

4

5

6

7

8

9

10

11

12

13

T

14

15

1613-37


0 1Inch

.05

.06

FLANGE-MOUNTED CLUTCHES

ZERO-BACKLASH ARMATUREFOR PARALLEL LOADS


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

Keyway Dimensions

.500Width Height

.375.250Bore.094.425

.062

.286.125.564

Catalog Number

INCH COMPONENT

RBore

EnergyDissipationlbf in./min.

RotorInertia

lbf in. sec2

ArmatureInertia

lbf in. sec2

Max.wattage

Static Torquelbf in.

Disengagementmsec

Engagementmsec

Armature

.250

.375

.500

51040 80

5.0 8.5 9.5

175 2951400

2600

182232

35

58

12

15

3.5 x 10-5

5.9 x 10-5

33.4 x 10-5

80.0 x 10-5

2.5 x 10-5

5.0 x 10-5

31.7 x 10-5

64.0 x 10-5

S90CF9-11A0404S90CF9-15A0404S90CF9-22A0606S90CF9-26A0606S90CF9-26A0808

∆

*

* Typical torque after burnishing; units shipped burnished.** For Catalog Number: -11A0404, initial working air gap at installation shall be .004/.009. - 15A0404, -17A0404, -22A0606, -26A0606, -26A0808, initial working air gap at installation shall be .006/.013.∆ Keyway not available in rotor.§ No knurl available; S90CF9-26A supplied with (3) #8-32 holes on a Ø1.375 B.C.


Weightlb.

TSet

Screws

MDia.F LED

Dia.C

Dia.B

Dia.A

Dia. K

1.251.532.26

2.63

1.4981.9992.873

3.499

1.311.752.50

3.13

.125

.156

.166

.187

1.171.562.33

2.63

1.231.541.93 2.20

.33

.34

.47

.507

.631

.756

.999

—#6-32

#8-32

.2

.41.1 1.4

S90CF9-11A0404S90CF9-15A0404S90CF9-22A0606S90CF9-26A0606S90CF9-26A0808

∆

§§

**

ØC

L

ØR

ØM

OVER KNURL§

ØA

ARMATURET, 2 PLACES90° APART

E SQ.

F

ROTORØB ØD, 4 PLACES

EQ. SPACED

K**12 in. MIN.

§§

Rev: 9.11.13 JC

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1

2

3

4

5

6

7

8

9

10

11

12

13

T

14

15

1613-47


0 1Inch

MAGNETIC PARTICLE CLUTCHES & BRAKES

FEATURES:Magnetic engagement without movement ofmechanical parts.Smooth and silent.No backlash.Nearly linear torque vs. current.No friction surface to wear out.Ultrafast response.Low output inertia.High torque-to-size ratio.Infinitely adjustable torque.

APPLICATIONS:TensioningStepping and IndexingOverload ProtectionMotor TestingControlled Start / Stop

HOW THE UNITS WORK: The output disk/shaft assembly does not touch the housing. The gap in between is filled with a fine, dry stainless steel powder. The powder is free flowing, until a magnetic field is applied from the stationary coil. The powder particles form chains along the magnetic field lines, linking the disk to the housing. The torque is proportional to the magnetic field and, therefore, to the applied D.C. input current. Output torque is controlled by varying the D.C. input current. The torque vs. current curve is essentially linear, with a slight "S" shape.

While the input torque is less than the output torque, the brake or clutch won't slip. For brakes, the output shaft won't rotate. For clutches, the input shaft will be coupled to the output shaft, with no slip.

When the input torque is increased, the brake or clutch will slip smoothly at the torque level set by the coil input current. Output torque is independent of slip rpm.

NOTE: See Accessories and Power Supplies on page 13-50 thru 13-53.

HOUSING (INPUT SHAFT ON CLUTCHES, FIXED ON

BRAKE)

MAGNETICFLUX LINES

MAGNETICPARTICLESIN GAP

OUTPUT DISK/SHAFT ASSEMBLY

COIL

0

20

40

60

80

100

0 20 40 60 80 100

TORQUE vs. CURRENT

PERC

ENT

RATE

D T

ORQ

UE

PERCENT RATED CURRENT (D.C.)

STANDARD COILS6, 12, 24, 90VOLTS D.C.

ANY VOLTAGEAVAILABLE

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1

2

3

4

5

6

7

8

9

10

11

12

13

T

14

15

1613-48


0 1Inch

MAGNETIC PARTICLE CLUTCHES


S90MPA-C14D19AS90MPA-C23D31S90MPA-C28D37S90MPA-C34D50S90MPA-C45D75S90MPA-C52D75

.06 – 2 .12 – 5 .4 – 15 .6 – 35 1 – 70 4 – 130

356

101415

26 x 10-7

13 x 10-6

33 x 10-6

15 x 10-5

66 x 10-5

15 x 10-4

200020001400100010001000

61020305080

42035508080

918257090

130

.7 3.0 5.0 9.017.022.0

TorqueRangelbf in.

Elect.Powerwatts

ShaftInertia

lbf in. sec2

Max.Speed

rpm

Mech.Heat

Dissipationwatts

Max.Overhung

Loadlbf

UnforcedResponse

msec.

Weightlb.

ULTRAFAST RESPONSESSOFT OR FAST START


Voltages other than 24 Volts DC available on special order.

APPLICATIONS:Tensioning Overload protectionTorque limiting drivesControlled starts (and stops witha separate brake)

The shaft becomes coupled to the outputshaft with electrical excitation.

All shafts have flat at the end.

Catalog Number

INCH COMPONENTB

ShaftO.D.

± .0002

DDia.± .015

ENom.

F± .03

G± .02

H± .02

CDia.+.000 -.001

J± .01 K

S90MPA-C14D19A

S90MPA-C23D31

S90MPA-C28D37

S90MPA-C34D50

S90MPA-C45D75

S90MPA-C52D75

.1872

.3122

.3745

.4995

.7495

.7495

2.88

4.40

5.07

5.53

6.50

6.61

1.66

2.50

2.80

3.38

3.67

3.67

.59

1.07

1.27

1.08

1.46

1.46

.63

.83

1.00

1.08

1.37

1.48

.750

1.125

1.125

1.375

1.625

2.000

.60

.08

.09

.08

.13

.13

1.4371.434

2.250

2.850

3.380

4.500

5.200

3 #3-481.140 B.C.2x3 #6-322.031 B.C.2x3 #8-322.000 B.C.2x4 #10-323.000 B.C.2x4 #10-324.228 B.C.2x4 1/4-204.812 B.C.

* For input side see View A, threaded mount holes “K” are at output end only. This assembly is supplied with housing solder terminals with leads attached and with 3 mounting clamps for #4-40 screws on Ø1.72 B.C.** Shaft has 3/16 Keyway at 90° from flat (both ends)∆ C Tolerance +.000 / -.002

**

**

* * *

Ø.125

.050

.125

Ø.375 Ø.250

Clamp *

View A

INPUTINPUT

.062

.093

.135

.129

Ø1.312(TYP)

+.000 -.001

ØB

ØC(TYP)

ØBOUTPUT

G H

FE

12 in. LEADS#22 AWG

J(TYP)K

*

ØD

∆

spring-wrapped slip clutches i · 15 16 13-6 phone: 516.328.3300 • fax: 516.326.8827 • 01 inch...

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