Magnetic Particle Clutch - Specifications

Torque range= 0-2 to 130 lb.-in.

View in metric units
Clutch photo Typical applications:
  • Adjustable tension for rewinding webs
  • Load simulation
  • Torque limiting
  • Soft starts

Characteristics - With no electrical excitation, the input shaft & output shaft freely rotate. With electrical excitation, the output shaft becomes coupled to the input shaft.

The cross-section drawing shows how clutches work.
Left to right - Models C5, C130, C2

Torque Curve Torque is -
  • Proportional to input current
  • Independent of RPM

While the load torque is less than the output torque, the clutch drives without slip. When the load torque is increased, the clutch will slip smoothly at the torque level set by the coil input current.

Use the sizing information to select the proper clutch.

Clutch Specifications
Model
(Click
to view
photo)
 Torque
Range
(lb.-in.)		 Input
Electric
Power
(watts)		 Shaft Inertia
(lb.-in.-sec.2)		 Slip Heat
Dissipation
(watts)		 Overhung
Load, Max.
(lbs.)		 Max.
RPM		 Weight
(lbs.)		 Data Sheets
(Acrobat
.pdf format)
C2 0.06 - 2 3 26 x 10-7 6 4 2000 0.7 C2 data sheet
C5 0.13 - 5 5 13 x 10-6 10 20 3 C5 data sheet
C15 0.4 - 15 6 44 x 10-6 20 35 1400 5 C15 data sheet
C35 1 - 35 10 15 x 10-5 30 50 1000 9 C35 data sheet
C70 1.3 - 70 14 66 x 10-5 50 80 17 C70 data sheet
C130 4 - 130 15 15 x 10-4 80 22 C130 data sheet

Available in 6, 12, 24, & 90 volts D.C.
The Clutch Coil Specifications Chart shows rated current & coil resistance.

Clutch drawing
Clutch Dimensions (inches)
Model

(Click
to view
drawing)

Shaft Dia.

Mounting
Pilot Dia.

Case Dia.

Shaft-Shaft

Case
Width

Shaft Length

Mtg. Pilot
Width

Wires

A
+/-.0002		 C
+0
-.001		 D
+/-.015		 E
+/-.030		 F
+/-.030		 G
+/-.020		 H
+/-.020		 J
+/-.010		 L
C2 0.1872 0.750 (a) 1.437
1.434		 2.88 1.66 0.59 0.63 0.06 (a) 0.63
C5 0.3122 1.125 2.25 4.40 2.50 1.08 0.83 0.08 0.72
C15 0.3745 2.85 5.07 2.80 1.27 1.00 0.09 0.96
C35 0.4995 1.375 3.375 5.53 3.375 1.08 0.08 0.84
C70 0.7495 1.625 4.50 6.50 3.67 1.46 1.38 0.13 1.18
C130 2.000 5.20 6.61 1.48 1.21
(a) Input end: Servo mounting, C=1.312 J=0.135
Clutch Mounting Holes
Model No. of
Holes		 Thread Basic
Circle
C2 3 (a) #3-48 (a) 1.140 (a)
C5 3 #6-32 2.031
C15 #8-32 2.000
C35 4 #10-32 3.000
C70 4.228
C130 1/4 - 20 4.812
(a) Mounting holes are on output end only
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