Comprised of an outer ring drawn from thin special steel plate by precision deep drawing, a spring, needle rollers and a cage, the one-way clutch can transmit torque in only one direction.

•  Boasting low frictional torque during over-running, this one-way clutch also features high transmittable torque despite its small crosssectional height.
•  A certain one-way clutch variant has a built-in bearing that supports radial loading. Another variant has a plated outer ring for improved corrosion resistance.
•  HF HFL types can be retained axially by merely press-fitting into a housing.
•  These one-way clutches use the outer ring drawn by precision deep drawing, which requires a housing with wall thickness of a specified value or more.
•  The HF type unit alone is not capable of bearing radial loads, and both ends must be supported with external radial bearings. (On the other hand, HFL type includes integrated radial bearings on each side.)