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  • A hydraulic bolt tensioner that can quickly fasten and disassemble, involves a bolt detachable device including a ring nut, a cylinder, a piston, a connection nut, a support bridge, a ring, a lever; connect nut The set has a piston, the outer diameter of the piston.


  • There are many hydraulic components on the construction machine, and sufficient hydraulic oil is needed. When the hydraulic oil needs to be replaced due to the expansion of the use time, someone mistakenly believes that only the oil in the hydraulic tank is light, filled with new hydraulic oil.


  • Hydraulic tools include: hydraulic wrench, hydraulic wrench special electric pump, hydraulic jack, hydraulic bolt tensioner, hydraulic flange separator, hydraulic nut, hydraulic pull horse, etc.


  • The principle of hydraulic pressure is composed of two cylinders of two sizes, filled with water or oil in the cylinder. The water is called "water pressure machine"; "oil press" is called "hydraulic press".


  • Control elements (ie, various hydraulic valves) control and regulate the pressure, flow and direction of the liquid in the hydraulic system. Depending on the control function, the hydraulic valve can be divided into pressure control valves, flow control valves, and direction control valves.


  • A complete hydraulic tool system consists of five parts, namely power components, executive components, control components, auxiliary components and hydraulic oil. The function of the power element is to convert the mechanical energy of the prime mover into the pressure energy of the liquid, which refers to the oil pump in the hydraulic system, which provides power to the entire hydraulic system.