hydraulic torque wrench chart moment is the product of the force and distance, when the thread fasteners such as fastening screw bolt and nut torque size need to control, to ensure the thread fastening and not because of destruction of the torque wrench calibration tool is too large, so use the torque wrench to operate. First set a maximum torque, torque reaches the set value when, wrench "card tower" noise or wrench joint bending Angle, this is already tightening torque.
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