| 摘要 |
A torque delivering power tool for tightening threaded joints to a desired final pretension level, comprising a motor (11), a power transmission (12) with a reduction gearing (13) and an output shaft (14). A first torque transducer (19) associated with the power transmission (12) is exposed to torque magnitudes corresponding to delivered torque magnitudes up to the desired final pretension level, and an external second torque transducer (20) which is arranged to be exposed to load magnitudes which correspond to torque output magnitudes up to a snug level only. <IMAGE> |
