Common sense about fourteen kinds of bearings1

1. There is a contact angle between the angular contact ball bearing 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 beneficial High-speed rotation, single-row bearings can withstand radial loads and unidirectional axial loads. The two single-row angular contact ball bearings that are combined in structure on the back share the inner ring and the outer ring, which can bear radial load and bidirectional axial load. Angular contact ball bearings

Main applications:

Single row: machine tool spindles, high-frequency motors, gas turbines, centrifugal separators, small car front wheels, differential pinion shafts.

Double row: oil pump, roots blower, air compressor, various transmissions, fuel injection pump, printing machinery.

Second, the self-aligning ball bearing has a double row of steel balls, and the outer ring raceway is an inner spherical type, so it can automatically adjust the shaft misalignment caused by the deflection or misalignment of the shaft or the casing. Tapered bore bearings It can be easily mounted on the shaft by using fasteners and mainly bear radial loads.

Self-aligning ball bearings

Main applications: woodworking machinery, textile machinery drive shafts, vertical self-aligning bearings with seats.

3. Spherical roller bearings This type of bearing is equipped with spherical rollers between the outer ring of spherical raceway and the inner ring of double raceways. According to the different internal structures, it is divided into R, RH, RHA and There are four types of SR. Because the arc center of the outer ring raceway is consistent with the bearing center, it has self-aligning performance, so it can automatically adjust the shaft center misalignment caused by the deflection or misalignment of the shaft or the casing, and can withstand radial loads and Bidirectional axial load.

Spherical roller bearings

Main uses: papermaking machinery, reduction gears, railway vehicle axles, rolling mill gearbox seats, rolling mill rollers, crushers, vibrating screens, printing machinery, woodworking machinery, various Class industrial reducer, vertical self-aligning bearing with seat.

Four. Thrust spherical roller bearings In this type of bearing, the spherical rollers are arranged obliquely. Since the raceway surface of the race is spherical, it has self-aligning performance, so the shaft can be allowed to have some inclination, and the axial The load capacity is very large, and it can also bear several radial loads while bearing the axial load. Oil lubrication is generally used in use. Thrust Spherical Roller Bearings

Main applications: hydraulic generators, vertical motors, propeller shafts for ships, reducers for rolling screws in rolling mills, tower cranes, coal mills, extruders, and forming machines.

Five, tapered roller bearings This type of bearing is equipped with truncated rollers, which are guided by the large ribs of the inner ring. The design makes the inner ring raceway surface, the outer ring raceway surface and the rolling The vertices of the conical surfaces of the sub-rolling surfaces intersect at a point on the centerline of the bearing. Single-row bearings can bear radial load and one-way axial load, and double-row bearings can bear radial load and two-way axial load, and are suitable for bearing heavy load and impact load. Tapered Roller Bearings

Main application: Automobile: front wheel, rear wheel, transmission, differential pinion shaft. Machine tool spindles, construction machinery, large agricultural machinery, gear reduction devices for railway vehicles, rolling mill roll necks and reduction devices.

Six, deep groove ball bearing in structure Each ring of deep groove ball bearing has a continuous groove raceway with a cross section of about one third of the equatorial circumference of the ball. Deep groove ball bearings are mainly used to bear radial loads, and can also bear certain axial loads.

When the radial clearance of the bearing increases, it has the properties of an angular contact ball bearing and can bear the alternating axial loads in two directions. Compared with other types of bearings of the same size, this type of bearing has a small friction coefficient, high limit speed and high precision, and is the preferred bearing type for users when selecting models. Deep groove ball bearings

Main applications: automobiles, tractors, machine tools, motors, water pumps, agricultural machinery, textile machinery, etc.