Measurement head for determining frictional torque and force acting during bolt tightening measures head friction torque, applied tightening torque with different transverse force transducers

摘要

The device measures the head friction torque with preferably three transverse force transducers (1a-1c) between the bolt head and the nut and the applied tightening torque with preferably three further transverse force transducers (2a-2c) arranged radially between the holder for the nut and an outer fixing ring (3). The thread friction torque is given by the difference between the tightening and head torques.