Torque is controlled by adjusting the hydraulic pressure setting on the pump.
Torque is controlled by adjusting the hydraulic pressure setting on the pump.
Hydraulic torque wrench systems work by converting hydraulic pressure into rotational force. The operator sets the pump pressure according to the torque chart provided for the wrench. Since torque output is directly related to pressure, accurate pressure control is critical for proper bolt loading. Many torque wrench pumps include adjustable regulators and high-accuracy gauges to ensure consistent torque results during tightening operations.