There are many types of optical axis spherical plain bearings offer, because, according to different uses, the optical axis is divided into many types. Linear optical axis of its kind including, general linear axis, linear axis chrome, chrome straight shafts, stainless steel linear shaft, chrome-plated hollow shaft. Resistance cutters, aviation equipment, production lines, high-speed ball, drilling equipment, aviation equipment, and so on. As for the use of the optical axis, the most important is in the aerospace, aviation optical system, after all, there is no fixed orbit aviation customized bearing joints, difficulty you run it is much larger than land transport, so the accuracy of the equipment of the machine is very high Therefore it will use the latest and most advanced equipment, and the optical axis is one of the joint bearing model specification, which is to simplify the operation, one of the integral parts conducive to the operation. Plastic linear bearings are self-lubricating properties of a linear motion system, the biggest difference is the metal of the metal linear bearings linear bearings are rolling friction, is the point contact between the bearing and the cylinder axis, so this suited for low-load high-speed movement; and plastic linear bearings are sliding friction is between the bearing surface contact with the cylinder axis, so this suited for high load low-speed movement. Two types of linear bearings described above is relatively common in industry is relatively common linear bearings, especially the most common in the automotive parts, machinery accessories. Feng Cheng Bearing Co., Ltd. We specialize in auto parts, bearings and other products, excellent quality and comprehensive services to give you the most satisfying shopping experience. Spherical Plain Bearings Wholesale Ordering | Cheng Feng bearing honest and reliable (certified) | Xiamen joint bearings supplied by Cheng Feng Bearing Co., Ltd. Lishui City. Cheng Feng Bearing Co., Ltd. Lishui City (susan1125.b2b.hc360.com/) quality services and products, and are subject to approval and trust of new and old customers and the industry. Our company is a certified member of the whole network Commercial Union, Commercial Union Support icon on the page, you can talk directly to our customer service staff, to our future cooperation happy!