Clinching Screw,Stainless Steel Screws,Brass Screws,Sheet Metal Screws,Pan Head Screw Dongguan Tiloo Industrial Co., Ltd , https://www.sales-fastener.comAnalysis of the Factors Affecting the Friction Coefficient of High-Performance Plastic Bearings
High-performance plastic bearings are typically manufactured from self-lubricating modified engineering plastics. The friction coefficient of these bearings plays a crucial role in determining their service life and the amount of force required for operation. Understanding the factors that influence this coefficient is essential for optimizing performance and longevity.
According to research conducted by CSB, the friction coefficient of self-lubricating plastic bearings is significantly influenced by the surface finish of the mating shaft. Studies have shown that as the surface roughness increases, so does the friction coefficient. When the shaft's surface roughness (Ra) falls within the range of 0.4 to 0.8 micrometers, the friction coefficient tends to be at its lowest.
The variation in the friction coefficient of self-lubricating plastic bearings is largely dependent on the material’s self-lubricating properties. In addition to the material itself, external factors such as operating load, speed, and ambient temperature also play a significant role in affecting the performance of these bearings.
CSB engineers observed through extensive testing that certain high-performance plastic bearings, such as CSB-EP and CSB-EP13, exhibit low friction coefficients below 80°C. Newer models like CSB-EP3 and CSB-EP3G maintain low friction even at 130°C. Meanwhile, high-load applications with temperatures up to 160°C show that CSB-EP5 and CSB-EP5Z still maintain a very low friction coefficient of approximately 0.11.
Based on thousands of laboratory experiments, CSB engineers concluded that the friction coefficient of self-lubricating plastic bearings generally decreases with an increase in working load, increases with higher moving speeds, and rises as the operating temperature increases.
In summary, the friction behavior of high-performance plastic bearings is influenced by multiple factors, including material properties, surface conditions, and environmental parameters. By understanding and controlling these variables, users can enhance the efficiency and durability of their bearing systems.
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Source: China Bearing Network | Date: November 26, 2013