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 50

Max. Overrunning Torque (oz·in)

N/A 3

Weight

N/A 4 oz

A (in)

N/A 1.07

B (in)

N/A .9400

C + .0010 (in)

N/A .1875

D - .001 (in)

N/A .5620

E (in)

N/A .14

F (in)

N/A .730

G

N/A #2-56 x .15 DP

H (in)

N/A .99

J (in)

N/A .24

K

N/A #6-32

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.