the basic information of deep groove ball bearing

Deep groove ball bearing comprises four basic components, they are respectively an inner raceway (inner race), an outer raceway (outer race), steel balls and a holder. Under normal operating conditions, the inner raceway, the outer raceway and the steel balls are subject to load, and the holder plays a role of separating and keeping the steel balls stable.

Deep Groove ball bearings having an outside diameter less than 9 mm are known as Miniature ball bearings. Deep Groove ball bearings having an outside diameter ~ 9 mm and a bore diameter < 10 mm are known as Extra-small ball bearings. Standard ball retainers (cages) are made from pressed steel. Machined cages are used in bearing operating at very high speed or for large diameter bearings. Deep groove ball bearings with seals or shields are standardized. They contain proper amount of grease in advance.

Deep Groove ball bearings can sustain radial, axial, or composite loads and because of simple design, this bearing type can be produced to provide both high-running accuracy and high-speed operation.