4.Deep groove ball bearing
Deep groove ball bearings are the most representative rolling bearings. Compared with other types of bearings of the same size, this type of bearing has small friction coefficient, high limit speed, simple structure, low manufacturing cost, high precision, no frequent maintenance, large size range and many forms, and it is the most widely used type. Bearing. It mainly bears radial load, but also can bear certain axial load. When it only bears radial load, the contact angle is zero.
After the deep groove ball bearing is installed on the shaft, the axial displacement of the shaft or the housing can be restricted within the axial clearance of the bearing, so it can be axially positioned in both directions. When the deep groove ball bearing has a large radial clearance, it has the performance of an angular contact bearing and can bear a large axial load. Under high-speed operating conditions with large axial loads, deep groove ball bearings are more advantageous than thrust ball bearings. In addition, this type of bearing also has a certain degree of self-aligning ability. When it is inclined 2'～10' relative to the housing hole, it can still work normally, but it will have a certain impact on the life of the bearing.
5.Angular contact ball bearings
It is generally called the six types of bearings represented by the 36 and 46 type bearings, and the angular contact is generally 15 degrees, 25 degrees, 45 degrees and so on.
Self-aligning ball bearing
A self-aligning ball bearing is a bearing equipped with spherical balls between the inner ring of two raceways and the outer ring whose raceway is spherical. The curvature center of the outer ring raceway surface is consistent with the bearing center, so it has the same centering function as the self-aligning ball bearing. When the shaft or housing is deflected, it can be adjusted automatically without increasing the bearing burden. Spherical roller bearings can bear radial load and axial load in two directions. Self-aligning ball bearings have a large radial load capacity and are suitable for heavy loads and shock loads. The inner diameter of the inner ring is a bearing with a tapered bore, which can be directly installed. Or use an adapter sleeve or a disassembly tube to install it on the cylindrical shaft. The cage is made of steel stamping cage and polyamide forming. Self-aligning ball bearings are suitable for bearing heavy loads and impact loads, precision instruments, low-noise motors, automobiles, motorcycles, metallurgy, rolling mills, mining, petroleum, paper, cement, and press Sugar industries and general machinery, etc.
6.Thrust ball bearing
Thrust ball bearings are divided into one-way and two-way. They can only bear axial load, and must not bear any radial load. Thrust bearing is divided into two parts: tight ring and live ring. The tight ring and the shaft sleeve are tight, and the live ring is supported on the bearing seat. Rings and rolling elements are usually made of rolling bearing steel with high strength and good wear resistance, and the surface hardness after quenching should reach HRC60-65. The cage is mostly made of mild steel stamping, and it can also be made of copper alloy laminated bakelite or plastic.
7.Bidirectional thrust angular contact ball bearings
The contact angle of thrust angular contact ball bearings is generally 60°. Commonly used thrust angular contact ball bearings are generally two-way thrust angular contact ball bearings. They are mainly used for precision machine tool spindles. They are generally used in conjunction with double-row cylindrical roller bearings and can withstand two-way shafts. To load, it has the advantages of high precision, good rigidity, low temperature rise, high speed, convenient assembly and disassembly, etc.