About hydraulic bolt stretcher, also called hydraulic nut, is an advanced bolt assembly method, especially suitable for fastening of narrow space and heavy-duty vibration machinery. Its main components include sliding piston, oil cylinder, support ring, sealing ring, air release screw and quick joint, etc. The working principle of the hydraulic bolt stretcher is that the [...]
Failure Prevention of Manual Hydraulic Pump The use of the manual hydraulic pump for a long time will lead to the failure and aging of obstacles. This article introduces how to deal with these failures in daily use. If the use time is too long, it is necessary to check the internal leakage of the [...]
Use of hydraulic wrench pump station The stability of the transmission pressure of the hydraulic wrench pump station will directly determine the accuracy of the transmission torque of the hydraulic torque wrench, and also affect the service life of the hydraulic torque wrench, as well as the service life of the nut disassembly. After the [...]
To choose bolt stretcher depends on the stretching mode first, the required pretightening force Kn, and then the torque mode, and the required tightening torque Nm. Bolt stretching is to use hydraulic cylinder to exert external force on the bolt end, stretch the bolt to the required length, and then tighten the nut, so that [...]