The characteristics, differences and corresponding uses of a variety of common bearings (1)

1. Angular contact ball bearings
There is a contact angle between the ring and the ball. The standard contact angles are 15°, 30° and 40°. The larger the contact angle, the greater the axial load capacity. The smaller the contact angle, the more conducive to high-speed rotation. Single row bearings can Withstand radial load and unidirectional axial load. The two single-row angular contact ball bearings combined on the back of the structure share an inner ring and an outer ring, which can bear radial load and bidirectional axial load.
The main purpose:
Single row: machine tool spindle, high frequency motor, gas turbine, centrifugal separator, front wheel of small car, differential pinion shaft.
Double rows: oil pumps, roots blowers, air compressors, various transmissions, fuel injection pumps, printing machinery.

2. Self-aligning ball bearing
Double-row steel balls, the outer ring raceway is an inner spherical surface, so it can automatically adjust the axis misalignment caused by the deflection or misalignment of the shaft or housing. The tapered bore bearing can be easily installed on the shaft through the use of fasteners. Withstand radial load.
Main uses: woodworking machinery, textile machinery drive shaft, vertical self-aligning bearing with seat.

3. Spherical roller bearings
This type of bearing is equipped with spherical rollers between the outer ring of the spherical raceway and the inner ring of the double raceway. According to the difference of the internal structure, it is divided into four types: R, RH, RHA and SR. The center of the bearing is consistent, with self-aligning performance, so it can automatically adjust the axis misalignment caused by the deflection or misalignment of the shaft or housing, and can withstand radial load and bidirectional axial load.
Main uses: papermaking machinery, reduction gears, railway vehicle axles, rolling mill gearbox seats, rolling mill roller tables, crushers, vibrating screens, printing machinery, woodworking machinery, various industrial reducers, vertical self-aligning bearings with seats .

4. Thrust spherical roller bearings
In this type of bearing, the spherical rollers are arranged obliquely. Because the raceway surface of the race is spherical and has self-aligning performance, it can allow the shaft to have a certain inclination, and the axial load capacity is very large. It can also bear several For radial load, oil lubrication is generally used when in use.
Main applications: hydroelectric generators, vertical motors, propeller shafts for ships, reducers for rolling screws of rolling mills, tower cranes, coal mills, extruders, and forming machines.

5. Tapered roller bearings
This type of bearing is equipped with truncated cone-shaped rollers, the rollers are guided by the large rib of the inner ring, and the design makes the vertices of the inner ring raceway surface, the outer ring raceway surface and the cone surface of the roller rolling surface intersect with the center line of the bearing On the point. Single-row bearings can bear radial loads and unidirectional axial loads, and double-row bearings can bear radial loads and bidirectional axial loads, and are suitable for bearing heavy loads and shock loads.
Main application: Automobile: front wheel, rear wheel, transmission, differential pinion shaft. Machine tool spindles, construction machinery, large agricultural machinery, railway vehicle gear reduction devices, rolling mill roll necks and reduction devices.