How To Explain The Surface Finish Of The Cylinder Drying Parts?
Jul 20, 2021
What is the surface finish of the cylinder seal? The surface roughness of the oil seal refers to the small spacing and the unevenness of the small peaks and valleys of the processed surface. Tu's seal oil cylinder seals believe that the distance (wave distance) between two wave crests or two wave troughs is very small (below 1mm), which is a microscopic geometric shape error. The smaller the surface roughness, the smoother the surface.
Cylinder seal
The purpose of all surface finish sealing processing is to provide a surface that causes minimal wear for the seal.
Seals on moving surfaces and piston rod seals may be damaged by fine abrasives adhering to rough surfaces. Therefore, the surface roughness value of the piston rod seal should be small, while having a surface and corrosion resistance similar to the best hard chromium. The ideal surface roughness value is between 0.16 to 0.40 μm (Ra) or 1.0 to 2.5 μm (Ra).
The cylinder seal is a piston seal that seals on the inner surface of the cylinder barrel, which is not greatly affected by abrasive dirt particles entering from the atmosphere, so it can allow rougher surfaces. The ideal surface roughness value is between 0.25 to 0.63 μm (Ra) or 1.6 to 4.0 μm (Ra). When assessing surface properties, work pressure must also be considered. Under higher working pressure, the oil film between the seal and the sealing surface is thinner and the friction is larger. Under such working conditions, the level of surface roughness should be selected at a lower value within the range of data given above.
As for the finish of oil cylinder seals, everyone has a simple understanding. Tu's seal is a seal manufacturer integrating production and sales. The main products: oil cylinder seals, imported seals, hydraulic seals, piston seals, welcome consult.
