Detector for measuring bearing friction torque

A test device used for measuring frictional torque of bearing is prepared for driving internal ring of measured bearing to rotate together when internal shaft is driven to rotate by motor converting torque signal of said ring to force signal of driving pin under action of friction torque between internal and external ring on measured bearing, converting force signal to be strain signal of cantilever, carrying out measurement by stress-strain transducer to convert strain signal to be electric signal and carrying out conversion and regulation on said electric signal by strain collection-analysis system for realizing accurate test on frictional torque.