Subject
Ball and roller bearings are commonly known as anti or lowfriction bearings because of their very low startup torques and negligible rolling resistance.
Due to significant improvements in machining tolerances, material quality and the availability of considerable historic statistical information concerning their use, lowfriction bearings are today capable of operating with significantly higher loads without reducing life expectancy. However, plain bearings remain the most appropriate product for applications with exceptionally high operational loads so long as rotational speeds are relatively low.
Bearings includes four calculation options:
Radial; Balls & Rollers, and Thrust; Balls & Rollers
the input and output data for each being identical (see below)
Whilst its life and load ratings are calculated according to Lundberg and Palmgren's original theories, Bearings includes factors corrected to accommodate AFBMA standards.
And whilst Bearings also recommends the shaftfit class, the housingfit class is dependent upon its design configuration (see Technical Help for assistance with selection).
You may use CalQlata’s Journals calculator to determine the performance of plain bearings and Limits & Fits for further assistance with machining tolerances and shafthousing fits.
For help using this calculator see Technical Help
Bearings Calculator  Options
Ball Bearings
Ball Bearings calculates the expected ratings for bearings with spherical rolling elements in radial or thrust applications.
You enter: 
and the ball and roller bearing calculator will provide: 


Life rating

Equivalent dynamic force

Radial force

Axial force

Dynamic load rating

Static load rating

Material and geometric factor

Static load factor

Radial force factor

Axial force factor

Contact stress

Shaft 'fit' class

Roller Bearings
Roller Bearings calculates the expected ratings for bearings with cylindrical rolling elements in radial or thrust applications.
You enter: 
and the ball and roller bearing calculator will provide: 


Life rating

Equivalent dynamic force

Radial force

Axial force

Dynamic load rating

Static load rating

Material and geometric factor

Static load factor

Radial force factor

Axial force factor

Contact stress

Shaft 'fit' class

Check minimum system requirements