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How Does A Thrust Bearing Work?

Plain bearings (also called pincer bearings) are often used as radial bearings, but the load runs parallel to the bearing axis. Axial bearings are designed to withstand loads of up to 1,000 pounds per square centimeter (0.5 kg) or more, roughly equivalent to a radial bearing. 

Since the sliding rolling element of a bearing can transfer loads in both radial and axial directions, the choice of bearing design depends on the application requirements. Unlike centrifugal bearings, these components cannot withstand very high speeds and can handle loads of up to 1,000 pounds per square centimeter (0.5 kg) or more, depending on the design. Spherical roller bearings are similar in design to spherical roller bearings as they enable angular misalignments and twists due to low friction and are suitable for a wide range of applications such as aircraft engines. 

The bearing consists of a shaft and washer, which corresponds to an inner ring, and a housing (or "washer"), which corresponds to the outer ring. 


The external dimensions are standardized by ISP 104 – 2002 standards, with the most common series being 292, 293, and 294. An example of a sliding thrust bearing is the thrust disk, which is a rotating component of the inner ring and outer ring of an outer bearing. As with other types of bearings, there are two types of thrust bearings: plain bearings and thrust bearings – washers. 

Many motors and machines use a combination of bearings to dissolve axial and radial forces from one bearing to another. Some types of rolling bearings specialize in this, such as tapered roller bearings. Ball bearings, ball bearings with ball bearings – such as outer ring and ball bearing inner ring – and tapered roller bearings are able to accommodate significant thrust and thrust loads. 

If combined radial and axial loads occur, an equivalent load (p) must be calculated for combined load, which is used in the service life formula. This calculation is somewhat complicated as it depends on the thrust and contact angle at which the bearing develops. It would be too difficult to show how p can be calculated for each bearing type shown, so I # ve shown how p is calculated for all bearing types shown in this article, with the exception of ball bearings and tapered roller bearings. 

These bearings use magnetic levitation to carry the load, which means there is no surface contact with the bearing. As a result, the overall frictional wear of the component is much lower than with a roller bearing part, and since the bearing surface has no direct contact, there is no sliding friction. By eliminating friction and wear on the material, magnetic bearings have a much longer service life and can support higher speeds. 


Ceramic bearings, a type of radial bearing, are used in some applications to withstand higher speeds. These components are preferred for use in high-speed applications such as power transmission, power distribution, and power generation. 

A ball bearing is able to withstand both radial and axial loads on the shafts. The angle of the axial of radial bearings allows a more uniform distribution of the axial load and the radial load to the axial angle contact of a ball bearing. Radial ball bearings are designed to withstand forces that are embedded vertically in the direction of radial shaft loads. The combination of AXIAL and AXIAL loads in one bearing can be achieved by using two different bearing types with different contact angles: radial ball and ceramic ball. 

For applications with low thrust and low axial load, thrust ball bearings consisting of a bearing ball supported by a ring can be used. Some are designed for mainly axial loads, but a rotation of this part is permitted in other bearings. 

With cylindrical thrust ball bearings, the flat axis, which deviates from the bearing axis, is arranged in such a way that the ball rotates in the opposite direction.

Ball bearings can handle radial-axial loads and therefore have a niche area in their application, but the most popular type of bearing is the tapered thrust. These bearings are given a nomenclature based on rolling bearings and are applied in the same way to all ball bearings. 

Ball bearings also have a unique structure that withstands loads, but they have their own unique properties, such as the shape of the ball and the angle of rotation. 

As far as the design of the bearing is concerned, it has two raceways inclined to the axle. The ball roller is designed to withstand very heavy radial and axial loads. Compared to a ball bearing, the spherical rollers of a bearing can run at a much higher speed than the ball bearings. These devices are now standardized, with the international standard for these devices being ISO 15 – 1998. 

This design protects against dirt, dust, and other impurities reduces grease, extends bearing life, and reduces bearing wear. 

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