The basic type of deep groove ball bearing consists of an outer ring, an inner ring, a set of steel balls, and a set of retaining structures. There are two types of deep groove ball bearings: single row and double row. The deep groove ball structure is also divided into sealed and open types. Open type refers to bearings without a sealed structure, while sealed deep groove balls are divided into dust-proof and oil proof seals. The dustproof sealing cover material is stamped steel plate, which only plays a simple role in preventing dust from entering the bearing raceway. The oil proof type is a contact type oil seal, which can effectively prevent the lubricating grease inside the bearing from overflowing.

Deep groove ball bearings mainly bear radial loads, and can also bear both radial and axial loads simultaneously. When it only bears radial loads, the contact angle is zero. When deep groove ball bearings have a large radial clearance, they have the performance of angular contact bearings and can withstand large axial loads. The friction coefficient of deep groove ball bearings is very small and the maximum speed is also high. Deep groove ball bearings are the most commonly used rolling bearings. Its structure is simple and easy to use. It is mainly used to withstand radial loads, but when the radial clearance of the bearing is increased, it has a certain degree of angular contact ball bearing performance and can withstand combined radial and axial loads. When the speed is high and thrust ball bearings are not suitable, they can also be used to withstand pure axial loads. Compared with other types of bearings with the same specifications and dimensions as deep groove ball bearings, this type of bearing has a lower friction coefficient and a higher limit speed. But it is not resistant to impact and not suitable for bearing heavy loads.

After being installed on the shaft, deep groove ball bearings can limit the axial displacement of the shaft or housing in both directions within the axial clearance range of the bearing, thus enabling axial positioning in both directions. In addition, this type of bearing also has a certain degree of self-aligning ability, and can still work normally when tilted 2 'to 10' relative to the housing hole, but it has a certain impact on the bearing life.