The thrust of the hydraulic cylinder F=PA, the output pressure P of the hydraulic pump station is unstable and punctual, the output force F of the hydraulic cylinder will also be shaken, and then the output torque of the hydraulic torque wrench will be unstable, and then the lock of the bolt will be affected. The tight torque is unstable, posing a potential hazard to the installation of the equipment;
Because the hydraulic torque wrench output hydraulic pressure is shaken, the output torque will be shaken, and then the hydraulic torque wrench will have mechanical impact between the components of the relative movement. This mechanical impact will directly shorten the movement accuracy of the component and The service life will eventually shorten the life of the entire hydraulic torque wrench;
After the nut has been dismantled and repaired repeatedly, the hexagonal surface of the nut will be invalid, and the formation can not be tightened and invalidated. The same as the second one, the change of the output torque of the hydraulic torque wrench will also be between the sleeve and the lock nut. A mechanical shock occurs, and then the broken ring is locked by the hexagonal surface of the nut, forming a nut failure, and the hydraulic wrench pump pressure instability factor will greatly shorten the number of times the equipment bolt can be disassembled (maintenance).
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