The installation of hydraulic jacks should be solid and reliable. The hoses must not be loosened when they are connected. The mounting surface of the cylinder and the sliding surface of the piston should be sufficiently parallel and perpendicular. The specific requirements for installing hydraulic jacks are as follows:

1. The center axis of the stationary cylinder of the foot seat should be concentric with the centerline of the load force to avoid causing lateral force. The lateral force can easily cause the seal to wear and the piston to be damaged. For hydraulic jacks of moving objects, the direction of movement of the cylinder and the moving object on the different rail surface during installation is kept parallel, and the parallelism is generally not more than 0.05 mm/n.

2. Install the sealing gland screw of the hydraulic jack body. The degree of tightening is to ensure that the piston can move flexibly on the whole stroke, and the phenomenon of non-blocking and uneven lightness is appropriate. Overtightening the screw will increase resistance and accelerate wear; loosening can cause oil spills.

3. Hydraulic jacks with exhaust valves or vent plugs must have exhaust valves or vent plugs installed at the highest point in order to remove air.

4. When the stroke is large and the working oil temperature is high, one end of the hydraulic jack must be kept floating to prevent the effect of thermal expansion.

5. When the hydraulic jack is installed on the machine tool, it must pay attention to the parallelism and straightness of the cylinder and machine tool guide rail, and the deviation should be within 0.1mm/full length. If the length of the busbar on the hydraulic jack is too bad, the underside of the bracket of the hydraulic jack or the contact surface of the scraping machine should be repaired to meet the requirements. If the side bus is out of tolerance, loosen the hydraulic jack and the machine fixing screw, remove the positioning pin, and correct the accuracy of the side bus.

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