Patent ID: 8888644
Filing Date: 2014-11-18
Classification: F16H,Y10T

Abstract:
1. A planetary roller gear drive, comprising a spindle nut that is arranged on a threaded spindle and with a plurality of planets that are arranged distributed around a periphery and in rolling engagement with the threaded spindle and the spindle nut, the threaded spindle has a plurality of helical windings wound around a spindle axis forming at least one thread groove, and a sensor element having at least one magnetoresistive sensor having an electrical resistance that changes under the influence of a magnetic field is arranged so that it cannot move in an axial direction relative to the spindle nut and detects an axial displacement of the threaded spindle and the spindle nut relative to each other, the spindle nut is supported for rotation about the spindle axis on a housing with the sensor element.