Testing apparatus for impulse wrench used for vehicle, has lubrication system which is provided for supplying lubricant between bolt head and contact surface

摘要

The testing apparatus (10) has measuring device (1) which is provided for detecting fastening state of the screw bolt head and the nut. A lubrication system (53) is provided for supplying the lubricant between bolt head and contact surface. A control device is provided for controlling supply of lubricant. The lubrication system is provided with compression device with lubricant fillable pressure cylinder. A spindle is coupled with piston arranged in the pressure cylinder. An independent claim is included for method for examining impulse wrench.