The reason why the workpiece of Kunshan Chuanna hydraulic pump is in a static state

2025-01-13

The sealing structure between the clamping hydraulic cylinder piston and the cylinder barrel. The sealing structure of the Sa'ao SPV6 hydraulic pump accessory is simple, easy to install, and has good sealing performance,

In general, there is almost no leakage during static sealing, while leakage only occurs during high-speed movement during dynamic sealing. The clamping hydraulic cylinder in this circuit is in a stopped state when clamping the workpiece. What causes leakage?

There are many reasons for hydraulic cylinder leakage, such as unreasonable tightening of the sealing ring, poor precision of the sealing device, rough sealing surface, damage to the sealing ring surface during installation, unreasonable selection of sealing components and oil, biting and twisting cracks in the sealing ring gap of the Sa'ao SPV119 hydraulic pump accessories, damage to the sealing components caused by dust and residual invasion of the system, and loosening of the sealing components due to pressure impact.

There is no pressure shock phenomenon in this system, and the selected hydraulic oil and sealing ring data are compatible. The device accuracy can be ensured by adjusting it during installation.

After disassembling the hydraulic cylinder, no damage such as scratches on the surface or cracking of the Sa'ao PV27 hydraulic pump components was found. After inspection, the roughness of the sealing surface reached Ra=0.4 μ m, which meets the sealing requirements. Therefore, the unreasonable tightening of the sealing ring may be the reason for the leakage of the clamping hydraulic cylinder.