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What is bearing?

Date: 2019-01-13 15:48
                       
A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts.

Generally speaking, a bearing is a device that is used to enable rotational or linear movement, while reducing friction and handling stress. Resembling wheels, bearings literally enable devices to roll, which reduces the friction between the surface of the bearing and the surface it’s rolling over. It’s significantly easier to move, both in a rotary or linear fashion, when friction is reduced—this also enhances speed and efficiency.