Joint bearing basic information

- May 22, 2019-

The layout of the pivot bearing is simpler than that of the rolling bearing, and it consists of an inner ring having an outer spherical surface and an outer ring having an inner spherical surface. The hub bearing is generally used for the lower-rate oscillating motion (ie, the angular motion), because the sliding appearance is spherical, and the tilting motion (ie, the aligning motion) can be performed within a certain angle scale, and the support shaft and the shaft hole are different. When the degree is large, it can still be normal.


First, the characteristics


Hub bearings can be subjected to large loads. Depending on the type and layout of the difference, it is possible to suffer from radial loads, axial loads or combined loads of radial and axial forces. Because the composite material is embedded on the outer spherical surface of the inner ring, the bearing can self-lubricate in the matter. Generally used for low-speed oscillating motion, and low-speed rotation, it can also be tilted in a certain angle. When the support shaft and the shaft hole are different, the normal operation can still be achieved. Self-lubricating hinge bearings are used in water conservancy, professional machinery and other industries.


Second, the application


The hub bearings are used in engineering hydraulic cylinders, forging machine tools, construction machinery, active equipment, automobile shock absorbers, water conservancy machinery and other industries. The pivot bearing is a spherical plain bearing, and the base type is composed of an inner and outer ring having a spherical sliding spherical surface. Depending on the layout and type, it can be subjected to radial loads, axial loads, or combined loads of simultaneous radial and axial effects.

Due to the large spherical sliding area of the pivot bearing, the angle of inclination is large, and also because of the special process of handling the key points, such as appearance phosphating, galvanizing, chrome plating or outer sliding surface lining, inserting, spraying, etc. Therefore, it has a large load capacity and anti-strike capability, and has the characteristics of anti-corrosion, abrasion resistance, self-aligning, good lubrication or self-lubricating and non-lubricating dirt pollution, even if the installation is misplaced, it can be normal. Therefore, the hub bearings are used for oscillating motions, tilting motions, and rotational motions at lower rates.


Third, the composition


The hub bearing consists of an outer ring and an inner ring. The inner spherical surface of the outer ring and the outer spherical surface of the inner ring constitute a rolling friction pair.