Rolling bearing guide rails have the advantages of flexible motion, low friction torque and large bearing capacity compared with ball guides. They are widely used in vertical and side guiding systems for ultra-precision machining machines and precision test instruments (such as coordinate measuring machines). The linearity of the rolling bearing guide rail is related not only to the straightness of the guide rail itself, but also to the rotational accuracy of the radial rolling bearing. A commercially available standard radial roller bearing for high speed
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