Planetary roller screw
RVI ROLLVIS SWISS

RVI satellite roller screws work on the same principle as RV and BRV screws except that their nut system is reversed.

This means the rollers themselves rotate around the screw (instead of the nut in RV and BRV screws) and move axially within the nut.

Apart from the screw threading where the rollers orbit, the journal is smooth and can have a special shape (e.g.: antirotation).

The nut is threaded along its entire length and is much longer than on RV and BRV screws. It governs the overall travel of the complete screw and therefore limits it if needed.