Motor-driven rotary tool with internal heating temperature detecting function

摘要: A motor-driven rotary tool with internal heating temperature detecting function capable of conveniently and easily preventing a damage such as low burn from being applied to an operator by the electric motor incorporated in holding part tool, comprising ( 12 ) thereof for performing operations screw tightening driving screwdriver bit motor, torque setting automatically stopping means load generated after specified are completed when reaches preset value, sensor 20 installed casing part, power shutdown 25 heated state is increased 55 75° C. or higher motor.