Linear motion bearing

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A linear motion bearing or slide is a bearing designed to provide free motion in one dimension. They are generally comprised of a sleeve-like outer ring and several rows of balls retained by cages. It features smooth motion, low friction, high rigidity and long life. They are economical, and easy to maintain and replace.

In the past all linear motion bearings used balls, whereas now, due to high performance polymer technology, plain bearings can be used. Typically this is made up of a low friction wear resistant polymer mechanically retained in a metallic housing which runs on a hard anodised extruded aluminium rail. This system has been developed by igus and is now the system of choice for many engineers.

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