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deep groove ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races. The balls are held in place by a cage, and the bearing is capable of carrying radial and axial loads. Deep groove ball bearings are the most widely used type of bearing due to their versatility and capability to accommodate both radial and axial loads. They are also relatively inexpensive and easy to maintain.
Deep groove ball bearings are typically made with a single row of balls, although double row and four-point contact bearings are also available. The bearing's outer race is typically made from steel, while the inner race and balls are usually made from a harder, corrosion-resistant material such as chrome steel or ceramic.