Deep groove ball bearings are used to withstand pure radial load, but they can withstand radial and axial load at the same time. When they only subject to pure radial load, the contact angle is zero. When deep groove ball bearing have bigger radial clearance, namely has angular contact bearing performance, can bear the larger axial load. Deep groove ball bearing has the small friction, so the limit rotational speed is very high, especially when they are running in high speed with the large axial load, deep groove ball bearings have more advantages than thrust ball bearings.
Deep groove ball bearings have simple structures, so they are easy to achieve high manufacturing precision compared than other types. Therefore easy to become series mass production, so the production costs are low. And they used in many areas.