With regard to the application principle of the hydraulic wrench in the work, all the users of the hydraulic wrench and the hydraulic wrench engineer must know and master,

The various components of the hydraulic wrench is such that the work head, hydraulic pump and high-pressure oil pipe is composed of several important components of hydraulic torque wrench. Then through the high pressure oil pipe, the hydraulic pump transfers the power to the working head, and drives the working head to rotate the nut. The hydraulic pump can be driven by electricity or compressed air. The working head of the hydraulic wrench is mainly composed of three parts, the frame (also called the shell), the oil cylinder and the transmission part. Cylinder, cylinder piston rod and a transmission part pair, cylinder center to center distance is the driving component of hydraulic wrench arm oil cylinder output amplification, multiplied by the arm, is the theory of hydraulic wrench output torque, due to friction, hydraulic wrench actual output torque is less than the theoretical output torque.