Drawn cup needle roller clutches are one-way clutches comprising thin-walled, drawn outer rings with a series of ramps on the inside diameter. They can transmit high torques in one direction and are compact in a radial direction. They give very precise indexing since the individual spring loading of the needle rollers ensures continuous contact between the shaft, needle rollers and ramps. Roller clutches with a knurled outside surface have the suffix R and are suitable for use with plastic housings.
Typical applications including: indexing clutches, back-stopping clutches, and overrunning clutches.
Drawn cup needle roller clutches are available in the following designs:
HF - Steel Springs
HF..-R - Steel Springs with Knurling
HF..-KF - Plastic Springs
HF..-KF-R - Plastic Springs with Knurling
HFL - Steel Springs with Bearing Arrangement
HFL..-R - Steel Springs with Bearing Arrangement and Knurling
HFL..-KF - Plastic Springs with Bearing Arrangement
HFL..-KF-R - Plastic Springs with Bearing Arrangement and Knurling