Deep groove ball bearings and angular contact ball bearings are two highly representative products in rolling bearings. They perform well in bearing radial loads and bidirectional axial loads, and are suitable for various high-speed rotating situations, especially for applications that require low noise and low vibration. The sealing design of these two types of bearings, with steel plate dust covers or rubber sealing rings, is pre filled with lubricating grease to ensure long-term stable operation. The outer ring is equipped with a stop ring or flange, making it not only easy to axially position the bearing, but also convenient for installation inside the casing.

Deep groove ball bearings, as the most common type of rolling bearings, have won widespread application due to their excellent performance. It can withstand radial loads and also cope with combined radial and axial loads. SKF 6203-2Z/VA208, SKF 6314M/C4VL0241, and other popular models of deep groove ball bearings. It is worth mentioning that when the radial clearance of deep groove ball bearings is large, their performance can be comparable to angular contact ball bearings and can withstand large axial loads. In addition, the friction coefficient of deep groove ball bearings is extremely small, making their maximum speed very high.

Angular contact ball bearings are known for their unique contact angle design, with standard contact angles of 15/25 and 40 degrees. The size of the contact angle determines the axial load capacity of the bearing, and the larger the angle, the stronger the ability to withstand axial loads; The smaller the angle, the more suitable it is for applications with high-speed rotation. SKF 7412BCBM, FAG HSS71920-E-T-P4S-UL and other representative models of angular contact ball bearings. Angular contact ball bearings can withstand both radial loads and unidirectional or bidirectional axial loads. Its high-speed ACH type bearing has a small ball diameter and a large number of balls, making it particularly suitable for high-precision rotation situations such as machine tool spindles.

Structurally, when the inner and outer diameters and widths of deep groove ball bearings and angular contact ball bearings are the same, the inner ring size and structure are similar, but the outer ring size and structure are different. The outer ring groove of deep groove ball bearings is equipped with double shoulders on both sides of the groove, while angular contact ball bearings are mostly designed with single shoulders. In addition, the curvature of the outer ring groove of deep groove ball bearings is usually smaller than that of angular contact ball bearings, and the position of the groove is also different from that of angular contact ball bearings, which depends on the degree of contact angle.

In terms of application, deep groove ball bearings are more suitable for bearing radial forces, smaller axial forces, as well as combined axial and radial loads and torque loads. Angular contact ball bearings can withstand a single radial load and larger axial loads (which vary with different contact angles). When two bearings are paired in pairs, they can withstand bidirectional axial loads and torque loads. In addition, the maximum speed of angular contact ball bearings of the same size is usually higher than that of deep groove ball bearings.

Overall, deep groove ball bearings and angular contact ball bearings have their own advantages in terms of characteristics, applications, and structures, and the choice of which bearing depends on specific application requirements and situations.