How do you preload a spherical roller bearing?

The simplest method of applying preload is to use a wave spring. The spring acts on the outer ring of one of the two bearings. This outer ring must be able to be axially displaced. The preload force remains practically constant, even when there is axial displacement of the bearing as a result of thermal elongation.

Do you preload ball bearings?

Ball bearings. All radial ball bearings that require a preload must be loaded axially. When an axial load is applied to the inner ring of the bearing, the race of the inner ring comes in contact with the rolling element and translates this load to the raceway of the outer ring.

How do you calculate preload on a bearing?

This method of adjustment is frequently used when the components of a bearing arrangement are pre assembled. The required preload, which is expressed as a negative distance, requires measuring total axial positive displacement (end play) of the shaft relative to a fixed surface.

What is wheel bearing preload?

Bearing Preload is an axial or thrust load applied to a bearing that removes excess play. There are many ways to apply preload, as well as many benefits and potential problems with preload. This article will provide an overview of bearing preloading in common radial and angular contact ball bearing applications.

What’s the purpose of preload on ball bearings?

Preload is defined as the initial axial load placed on a set of bearings during installation. Preloading facilitates precise control over the operating geometry of the bearing’s mating parts, a useful function in applications where axial and radial movement must remain within critical limits.

Can a super precision contact ball bearing be preloaded?

A single super-precision angular contact ball bearing cannot be preloaded until a second bearing provides location in the opposite direction. Universally matchable bearings and matched bearing sets are manufactured pre-set in different preload classes to meet varying requirements regarding rotational speed, rigidity, and operating temperature.

What kind of bearings can be preloaded radially?

Super-precision cylindrical roller bearings, for example, can only be preloaded radially because of their design, while angular contact ball bearings or tapered roller bearings can only be preloaded axially.

Do you need to preload deep groove ball bearings?

Deep groove ball bearings can be preloaded, but it is not required in most applications. The amount of preload applied is important. It must be sufficient to reduce the excess play, but care must be taken not to apply too much preload.