Features
  • High torque transmission
  • Low drag overrunning
  • Overload protection
Applications
  • Automatic flywheel decoupling
  • Unidirectional stepping
  • Backstopping
Federal supply code - 15531
Unit of Measure

Specifications

Direction Drive (Viewed from Input End)

N/A CW CCW

Transmission Torque (lb·in)

N/A 125

Max. Overrunning Torque (oz·in)

N/A 5

Weight

N/A 10 oz

A (in)

N/A 1.32

B (in)

N/A 1.50

C + .0010 (in)

N/A .5000

D - .001 (in)

N/A 1.00

E (in)

N/A .22

F (in)

N/A 1.250

G

N/A #4-40 x .18 DP

H (in)

N/A 1.50

J (in)

N/A .36

K

N/A #10-32

Additional Information

N/A
UNH Series clutches are spring-wrapped, unidirectional or overrunning clutches. They are noted for their high torque transmission capacity relative to their small size. The clutch consists of collinear input and output drums, each enveloped by a common helical spring. When the input drum is rotated in the direction where the spring self-energizes, (CW or CCW), the spring couples the output to the input with high torque transmission capability. In the reverse direction, the output decouples and experiences only a slight drag torque, produced by the spring riding on the input drum.