A roller screw having a structure suitable for circulating rollers.

By such roller screw, it is possible to smoothly circulate rollers without causing skew.

A roller screw where rollers can be smoothly circulated.

According to such a screw, it is possible to pre-load to an optimum degree according to the construction of the roller screw, and therefore, the rigidity of the roller screw can be improved.

The drive mechanism includes a geared planetary roller screw that includes a torque tube connected to a roller screw's nut body.

A roller screw consists of a screw (1), rollers (2), bearings (3), bearing seats (4) and pins (5).

A roller screw capable of circulating rollers without twisting a no-load roller return passage connected to a load roller rolling passage.

The screw mechanism has a static non-self-locking construction that comprises a roller or ball screw.

In a preferred embodiment, the rotary-to-linear actuator is a roller screw assembly (14, 104, 204).

A roller screw which can reduce the quantity of torsion of a no-load return passage.

Roller screws offer a performance level far beyond the capabilities of ball screws.

In this roller screw, the rotating axis (4a) of each roller (4) substantially passes through the center line (1b) of the screw shaft (1).

A roller screw actuator comprises a screw (112), a nut (114) coaxial with the screw and an outer drive member (202) rotatably supported on the nut.

The electric actuator includes a driving element comprising a planetary roller screw for actuating the unheading valve.

SKF’s planetary roller screws enable very precise control of linear movement.