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Thrust self-aligning roller bearings are spherical bearings with inner diameters ranging from 60mm to 1120mm and outer diameters from 130mm to 1460mm. They are primarily used in oil drilling rigs, iron and steel machinery, hydroelectric generators, large hooks, extruders, preheaters, and other fields. The raceway surface of the bearing raceway is designed with the bearing’s central axis as the center, providing self-aligning capability and able to withstand high axial loads and radial loads not exceeding 55% of the axial load.

These bearings are available in 200, 300, and 400 series diameters, corresponding to self-aligning angles of 1° to 3°. They are typically oil-lubricated, and the cages include both solid brass cages and stamped cages. Improved designs include connecting rings, a fixed shaft, rollers, and thermal expansion springs. Self-lubrication is achieved through a flexible telescopic rod and a sealing block. Hollow support cage assemblies are used, increasing the number of rollers to improve axial load capacity. During installation, interference fits should be avoided to ensure uniform contact angle distribution. Axial clearance can be adjusted using adjusting nuts or shims. The inner diameter of the shaft ring is fitted with flanges on both sides, which contact the end faces of the rollers to effectively limit radial runout.

Product Features: Unlike other thrust bearings in the catalog, this type of bearing has a very high axial load capacity. While bearing axial loads, it can also withstand some radial loads, but the radial load must not exceed 55% of the axial load.

As long as the loads P and P0 do not exceed 0.05C0, and the shaft ring rotates, the bearing is allowed the self-aligning angles listed in the table below.

Bearing Diameter Series | Self-aligning Angle | Bearing Diameter Series | Self-aligning Angle 200 Series | 1°~1.5° 300 Series | 1.5°~2° 400 Series | 2°~3° Smaller values ​​are suitable for larger bearings, and the allowable self-aligning angle will decrease as the load increases.

Oil lubrication is generally used.

Thrust tapered roller bearings can only withstand unidirectional axial loads and can limit unidirectional axial displacement, therefore they can be used for unidirectional axial positioning. Compared with thrust cylindrical roller bearings, they have a higher load capacity and less relative slippage, but a lower limiting speed.

Product Categories: Symmetrical Thrust Self-Aligning Roller Bearings
Asymmetrical Thrust Self-Aligning Roller Bearings

Cage: Cages are generally made of solid brass or stamped brass. When using a solid brass cage, the suffix “-” is not indicated; otherwise, the corresponding suffix “-” is used.

Applications: These bearings are mainly used in oil drilling rigs, iron and steel machinery, hydroelectric generators, vertical electric motors, marine propeller shafts, tower cranes, extrusion presses, etc.