ACTUATOR COMPRISING A PLANETARY ROLLER SCREW

摘要

The invention relates to an actuator comprising a planetary roller screw (PWG), in particular for actuating a clutch in a vehicle, wherein a plurality of planetary rollers (4.2) that mesh with a ring gear (4.1) surrounding the planetary rollers engage with a screw (3). The planetary rollers are disposed in a planetary roller carrier (4.3) at both ends, and the planetary carriers are supported in a rotationally fixed manner in a sleeve that surrounds the ring gear and points radially inward at both ends. According to the invention, the sleeve (4) and the planetary carriers that are supported therein are axially secured, are connected to a rotor (R) of a drive unit for conjoint rotation therewith and can be driven about an axis of rotation, the screw (3) is supported in a rotationally fixed manner, and the screw performs an axial lift (H) when the rotor and the planetary carriers supported in the sleeve rotate.