The use of the Qi mill process to finish the cylinder bore of the cylinder can eliminate the contour peaks and valleys of the cylinder bore surface, and can also solve the problem of uneven local hardness of the pump. Therefore, it is preferable to use honing in the cylinder hole finishing. In fact, most of the pump parts and high-sealing parts are processed by Qi-Mu. After investigation, the motorcycle manufacturers have processed the cylinder parts by honing. Since the cup mounted on the piston of the pump is in relative motion with the pump cylinder, the cup forms friction with the pump cylinder. The material of the cup is a soft rubber piece. If the roughness of the cylinder hole is poor, the cup lip will be intensified. The mouth damage causes poor sealing and oil leakage, which affects the service life of the sub-pump assembly. Poor roughness is one of the main reasons that affect the oil leakage of the brake cylinder.

The quality of the brake fluid is not discussed here. As far as the impact of the grease on the cup is concerned, through the anatomical analysis of the faulty part, it is found that the entire circumference of the oil-impregnated cylinder and the bowl lip contact About 0.5mm thick cup grease is firmly attached to the wall of the pump cylinder. The reason is analyzed. Due to the production organization, the product may be stored for a period of time after assembly and before use. The length of time may not be long. It may be 3 to 5 months or even half a year. During this static storage period, the grease in the cup inside the pump gradually gels, forming a circle of deposits in the cylinder bore and adhering to the wall of the pumping hole.

Due to the presence of this substance, the wear of the cup is accelerated during the movement, and the lip of the cup is worn into a jagged shape. In severe cases, the grease of the cup may stick the cup to the cylinder hole, causing the pump to fail to work. , or tearing the cup due to the action of hydraulic pressure, causing the pump to seep.

Spring

Lanejoy is all kinds of spring Manufacturer at china 10 years, we had made compression spring, Wire Spring, Torsion Spring, Tension Spring, recoil spring and so on.