OIL PULSE TOOL

摘要

According to an aspect of the invention, an oil pulse (1) tool includes: a motor (3) generating a driving force; an oil pulse unit (4) including a shaft (24), the oil pulse unit being driven by the motor and generating an impact torque on the shaft when the motor passes an impact position; and an output shaft (5) on which a front end tool is attached, the output shaft being fixed to the shaft, wherein the oil pulse tool is provided with a rotational position detecting sensor (13b) of detecting a rotational position of the output shaft, and a torque detecting sensor (12) of detecting generation of an impact torque, and the oil pulse tool is provided with detecting means for measuring a state related to the reverse rotation of the motor, and regularly rotating again the motor and passing a position of generating the impact, and detecting a reduction in a performance of the oil pulse unit by an aging change of the state.