Steel, an alloy primarily composed of carbon and iron, is the most popular material selection for linear bearings. Steel linear bearings are known to have excellent mechanical properties (i.e., high strength and rigidity); this can support heavy loads and provide smooth and precise motion. Carbon steel and stainless steel are common types of steel used in constructing steel linear bearings. Increasing the carbon content increases the hardness of steel; this affects the performance of the linear bearing.
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