Bearing type (1)

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 a small friction coefficient, high limiting speed, simple structure, low manufacturing cost, high accuracy, no need for frequent maintenance, and a large size range and many forms, which is the most widely used type Bearings. It mainly bears radial load and can also bear certain axial load. When it is only subjected to radial loads, 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 limited in the axial clearance of the bearing, so it can be axially positioned in both directions. When a 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 superior to thrust ball bearings. In addition, this type of bearing also has a certain self-aligning ability. When it is inclined 2 ′ to 10 ′ relative to the housing hole, it can still work normally, but it has a certain impact on the bearing life.
Angular contact ball bearings
Generally speaking, the six types of bearings called 36 and 46 bearings are generally used, and the angular contact is generally 15 degrees, 25 degrees, and 45 degrees.
Self-aligning ball bearings

Self-aligning ball bearings are bearings equipped with spherical balls between the inner ring of two raceways and the outer ring of which the raceways are spherical. The center of curvature of the outer ring raceway surface is consistent with the bearing center, so it has the same self-aligning function as the self-aligning ball bearing. When the shaft and housing are deflected, it can be adjusted automatically without increasing the bearing load. Spherical roller bearings can support radial loads and axial loads in two directions. Self-aligning ball bearings have a large radial load capacity and are suitable for heavy 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 and a disassembly cylinder for installation on a cylindrical shaft. The cage is made of steel stamping cage and polyamide molding. Self-aligning ball bearings are suitable for bearing heavy and shock loads, precision instruments, low-noise motors, automobiles, motorcycles, metallurgy, rolling mills, mining, petroleum, papermaking, cement, pressing Sugar and other industries and general machinery.
Thrust ball bearing
Thrust ball bearings are divided into unidirectional and bidirectional. They can only withstand axial loads and must not withstand any radial loads. Thrust bearing is divided into two parts: tight ring and live ring. The tight ring is tightly connected with the shaft sleeve, and the movable ring is supported on the bearing seat. The rings and rolling elements are usually made of rolling bearing steel with high strength and good wear resistance. The surface hardness after quenching should reach HRC60 ～ 65. The cages are mostly made of soft steel stamping, and can also be made of copper alloy cloth bakelite or plastic.
Angular contact thrust ball bearings
Double-row tapered roller bearings
Thrust angular contact ball bearings generally have a contact angle of 60 °. The 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 bidirectional shaft It has the advantages of high precision, good rigidity, low temperature rise, high speed, and convenient assembly and disassembly.

wheel unit bearing