Device for measuring rotational torque on bearing element e.g. ball bearing, has rotational torque determining unit that determines transmitted rotational torque based on output signal from piezoelectric transducer

摘要

The device has gear wheels (3,4) that are arranged on shafts (1,2) respectively for transmission of rotational torque. A ball bearing (7) is arranged in bearing ring (6). A piezoelectric transducer (13) is arranged between bearing ring and ball bearing. A rotational torque determining unit determines the transmitted rotational torque based on output signal from piezoelectric transducer. An independent claim is included for rotational torque measurement method.