Drawn cup roller clutches are one-way clutches comprising thin‑walled, drawn outer rings with a series of ramps on the inside diameter, plastic cages, pressure springs and needle rollers. They can transmit high torques in one direction and are particularly compact in a radial direction. The roller clutches are available with and without bearing arrangements.

Drawn cup roller clutches give very precise indexing, since the individual spring loading of the needle rollers ensures continuous contact between the shaft, needle rollers and ramps. They allow high indexing frequencies due to their low mass and the resulting low moment of inertia of the clamping elements. They also have a low overrunning frictional torque.

Drawn cup roller clutches can be used in various applications such as indexing clutches, back-stopping clutches and overrunning clutches. In these cases, the drawn cup roller clutch performs an overrunning or locking function.

Roller clutches HF do not have a bearing arrangement and can only transmit torques.

Drawn cup roller clutches HF have steel pressure springs, while roller clutches HF..KF have plastic pressure springs.

In the case of drawn cup roller clutches without a bearing arrangement, concentricity to the shaft axis must be secured by additional rolling bearings or drawn cup roller clutches with a bearing arrangement must be used.

Roller clutches with a knurled outside surface have the suffix R and are suitable for use with plastic housings.

The knurling covers all or part of the length of the drawn cup.

Roller clutches HFL have an integral plain or rolling bearing arrangement and can support torques as well as radial forces.

Drawn cup roller clutches HFL have steel pressure springs, roller clutches HFL..KF have plastic pressure springs.

Roller clutches with a knurled outside surface have the suffix R and are suitable for use with plastic housings.

The knurling covers all or part of the length of the drawn cup.

Drawn cup roller clutches are supplied open on both sides.

The roller clutches are greased using a lithium soap grease to GA26. In many cases, the initial greasing is sufficient to last the operating life of the bearings.

For applications with oil lubrication, roller clutches are available without greasing. These roller clutches are coated with a preservative. Further information on lubrication: see link.

Drawn cup roller clutches are suitable for operating temperatures from –10 °C to +70 °C, restricted by the grease.

Suffixes for available designs: see table.