Bearings With Spherical ProfileC…2Z / C…2RS Series Track Roller Bearings are precision ball bearings that they are generally used in precision Linear Motion Guide. They are supplied with the material of stainless steel and high quality chromium steel in rubber seal and metal shield respectively,Website:http://www.rihooindustry.com, and are also available with concentric or eccentric pivot.They can be used in the various tracks with different configuration and in the application that need to linear motion, such as industrial robot, precision assembly line, overhead conveyer system, automatic equipment, transmission machine, logistics transportation system and so on. They also be called guide wheel bearings.