Drive system, e.g. for use as a servo motor

摘要

Has measurement systems shafts roller bearing acting simultaneously as bearing for measurement system and of motor shaft and stator coupling supports measurement system's stator to permit axial swaying movement but not radial movement. The system has an electric motor with a shaft mounted in roller bearings at both ends and a rotation angle measurement system whose measurement system shaft has at least one roller bearing (26) and is rigidly coupled to one end of the motor shaft (10). The measurement system's stator (28) is coupled to rotate with the motor's stator via a stator coupling (30). The measurement system's shaft's roller bearing simultaneously acts as the roller bearing for the measurement system end of the motor shaft and the stator coupling supports the measurement system's stator to permit axial and swaying movement but not radial movement.