A ball bearing is a type of rolling-element bearing designed to reduce rotational friction and support radial and axial loads in machinery. It consists of several key components: an inner ring and an outer ring, which serve as raceways; a set of spherical balls that roll between the rings to minimize friction; and a cage (or retainer) that evenly spaces the balls and keeps them in place. Some ball bearings also include seals or shields to protect against contaminants and retain lubrication. Thes

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