Machine Components Corporation
Machine Components Corporation
70 Newtown Road, Plainview, NY 11803-4382
Phone: 516.694.7222
Email: info@machinecomp.com
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Features
  • Integral toothed pulley
  • Long life under continuous slip conditions
  • Unidirectional or bidirectional operation
  • Same or different CW and CCW torques
  • Small in size
  • Precise and stable limit torque calibration
  • Torque range: 2.0 to 600 oz·in
  • Same torque at breakaway as at high slip velocities
  • Corrosion resistant materials
Applications
  • Tension control of film or tape drives
  • Transmission overload protection
Federal supply code - 15531
Spring Wrapped Slip Clutch – PB Series
Spring Wrapped Slip Clutch – PB Series - Dimensions
Unit of Measure
Items Spring Wrapped Slip Clutch – PB Series
PB-301
Spring Wrapped Slip Clutch – PB Series 		Spring Wrapped Slip Clutch – PB Series
PB-302
Spring Wrapped Slip Clutch – PB Series 		Spring Wrapped Slip Clutch – PB Series
PB-303
Spring Wrapped Slip Clutch – PB Series 		Spring Wrapped Slip Clutch – PB Series
PB-401
Spring Wrapped Slip Clutch – PB Series 		Spring Wrapped Slip Clutch – PB Series
PB-403
Spring Wrapped Slip Clutch – PB Series
Upper Limit Torque (oz·in)1 N/A 20 ± 2 N/A 20 ± 2 N/A 20 ± 2 N/A 48 ± 5 N/A 48 ± 5
Unit Weight N/A 5 oz N/A 5 oz N/A 5 oz N/A 7 oz N/A 7 oz
Pitch Belt N/A 1/5 in
A ± .03 (in) N/A 1.24 N/A 1.24 N/A 1.24 N/A 1.39 N/A 1.39
B + .0010 (in) N/A .1875 N/A .2500 N/A .3125 N/A .2500 N/A .3125
C (in) N/A .21 N/A .21 N/A .21 N/A .23 N/A .23
D ± .03 (in) N/A .87 N/A .87 N/A .87 N/A 1.01 N/A 1.01
E (in) N/A 1.00 N/A 1.00 N/A 1.00 N/A 1.25 N/A 1.25
F (in) N/A .50
G N/A #4-40 N/A #4-40 N/A #4-40 N/A #6-32 N/A #6-32
Number of Pulley Teeth2 N/A 22 24 28 30 32 36 40 42 44 48 a1081.jpg N/A 22 24 28 30 32 36 40 42 44 48 a1081.jpg N/A 22 24 28 30 32 36 40 42 44 48 a1081.jpg N/A 28 30 32 36 40 42 44 48 a1081.jpg N/A 28 30 32 36 40 42 44 48 a1081.jpg
  • 1 Stock units are calibrated with equal cw and ccw slip torques corresponding to the tabulated Upper Limit Torque listed in the table above. Clutches can also be calibrated with slip torque values lower then the maximum values shown. When ordering the CW and CCW slip torque values may be specified anywhere from the full torque value listed, to a lower value of approximately 1/8 of this maximum, and may be specified the same or different for each of the two directions of rotation.
  • 2 1/5 pitch (3/8" pitch available)