Deep groove ball bearings are the most representative rolling bearing，alou wide use in each industry. Used for high speed and extremely high speed of environment, it is very durable and does not require frequent maintenance. Deep groove ball bearings have low friction coefficient, high ultimate rotational speed, simple structure, low manufacturing cost, and are easy to achieve high manufacturing accuracy. The range of dimensions and structural type sdiverse changes, widely used in precision instruments, low noise motors, various types of automobiles, motorcycles, and common machinery,etc,industry. It is the most widely used type of bearing in the mechanical industry. Usually able to withstand radial loads and may also withstand a certain amount of axial loads.

When selecting a larger radial clearance, the axial bearing force increases, and when able to withstand pure radial force, the contact angle is zero. When axial force is used, the contact angle is greater than zero. In common cases, stamping wave shaped cages, vehicle made solid cages, and in some cases, nylon cages are also chosen.

The deep groove ball bearing is installed on the shaft and can limit the axial displacement of the shaft or shell in both directions within the range of axial clearance of the bearing, so it can perform axial positioning in both directions. It is worth mentioning that deep groove ball bearings also have some self-aligning ability. When tilted 2 'to 10' relative to the shell hole, they can still work normally, but it has some impact on the bearing life. The cages of deep groove ball bearings are mostly steel plate punched wavy cages (steel cages in deep groove ball bearings are represented by the English alphabet J), and large bearings mostly choose vehicle made metal solid cages.

There are several major categories of deep groove ball bearings, including single row deep groove ball bearings, single row deep groove ball bearings with dust covers, single row deep groove ball bearings with dust covers and sealing rings, single row deep groove ball bearings with stop grooves and stop rings on the outer ring, deep groove ball bearings with ball mounting gaps, double row deep groove ball bearings, etc. There are many types, and there are also different models such as domestic model 81800, foreign brands and corresponding brand models such as NSK's 6600, NACHI's 6600, etc, NTN 6600, SKF 81800, FAG 81800T and other models.