Introduction of several rolling element bearings

Thrust roller bearing is used to bear the axial load of the main shaft. Meridional combined load, but the meridional load shall not exceed 55% of the axial load. Compared with other thrust roller bearings, this kind of bearing has lower friction coefficient, higher speed and self-aligning ability. The roller of 29000 type bearing is an asymmetric spherical roller, which can reduce the relative sliding of stick and raceway in work. The roller is long, large in diameter, large in number and large in load capacity. It is usually lubricated with oil, and can be lubricated with grease in some low speed cases. In the design and selection, priority should be given. Mainly used in hydraulic generator, crane hook, etc.

The roller of cylindrical roller bearing is usually guided by two ribs of a bearing ring, cage. The roller and guide ring form an assembly, which can be separated from another bearing ring. It belongs to separable bearing. This kind of bearing is easy to install and disassemble, especially when the inner ring, outer ring, shaft and shell are required to be interference fit. This kind of bearing is generally only used to bear radial load, only single row bearing with inner and outer ring ribs can bear smaller steady axial load or larger intermittent axial load. It is mainly used for large motor, machine tool spindle, axle box, diesel engine crankshaft and automobile, etc.

Tapered roller bearings are mainly used to bear radial and axial combined load, while large cone angle tapered roller bearings can be used to bear radial and axial combined load. The inner ring (including tapered roller and cage) and outer ring can be installed separately. In the process of installation and use, the radial clearance and axial clearance of the bearing can be adjusted, and the roller used for automobile rear axle hub, large machine tool spindle, high-power reducer, axle bearing box and conveying device can also be pre interference installed.

Outer spherical ball bearing with seat is composed of outer spherical ball bearing with seal on both sides and cast (or steel plate stamping) bearing seat. The inner structure of the outer spherical ball bearing is the same as that of the deep groove ball bearing, but the inner ring of the bearing is wider than that of the outer ring. The outer ring has a truncated spherical surface, which can be self-aligning when matched with the concave spherical surface of the bearing seat. Usually, there is a gap between the inner hole of the bearing and the shaft, and the inner ring of the bearing is fixed on the shaft with the jacking wire, eccentric sleeve or tightening sleeve, and rotates with the shaft. With compact structure, convenient loading and unloading, perfect sealing, it is suitable for simple support, and is commonly used in mining, metallurgy, agriculture, chemical industry, textile, printing and dyeing, conveying machinery, etc.