Deep Groove ball bearings are the most popular of all the ball bearing types because they are available in a wide variety of seal, shield and snap-ring arrangements.The bearing ring grooves are circular arcs made slightly larger than the radius of the ball.

The balls make point contact with the raceways (elliptical contact when loaded). The inner ring shoulders are of equal height (as the outer ring shoulders). 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. Standard ball retainers (cages) are made from pressed steel. Machined cages are used in bearing operation at very high speed or for large diameter bearings.

1, single row deep groove ball bearings

2, single row deep groove ball bearings with dust cover
3, with a dust cover, a ring of single row deep groove ball bearings
4, the outer ring on the stopper groove and snap ring of single row deep groove ball bearings
5, deep groove ball bearings ball gap
6, double row deep groove ball bearings
In accordance with the sizes of deep groove ball bearings can be divided into:
(1) miniature bearings ---- nominal diameter size range of 26mm bearings;
(2) small bearing ---- nominal diameter size range of 28-55mm bearings;
(3) small and medium-sized bearings ---- nominal diameter size range of 60-115mm bearings;
(4) large bearing ---- nominal diameter size range of 120-190mm bearings
(5) large bearing ---- nominal diameter size range of 200-430mm bearings;
(6) large bearing  ----diameter size range of 440mm or more bearings.