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We hope that our sections on bearing technical information will help you to gain a better understanding of bearings and their performance. Please click on the buttons below to display each section. If you require further bearing technical information or an explanation of any of the sections below, please contact us.

Retainer (Cage)

More information on bearing material from the grade of steel used in our bearings to useful selection tips.

Retainers keep the balls evenly spaced around the raceway preventing ball to ball contact and thus allowing higher speeds.

Shields, contact  seals and non-contact seals.

Load ratings are expressed in Kgf (kilogramme force)on this website. To keep it simple, we say 1 Kgf = 10 Newtons.

Expressed as radial play or axial play, it is the amount of play or looseness between the inner and outer ring.

Many factors affect speed limits: temperature, load, vibration, radial play, cage, lubricant, ball material and closures.

The ideal fit is where the shaft/housing is the same size as the bore/O.D. of the bearing which is known as a line-to-line fit.

Tolerances control the dimensional accuracy of a bearing.

This affects the free-running of the bearing depending bearing lubrication which gives high/low frictional torque.

Bearing Material

Slight machining imperfections in the form of uneven surfaces contribute to the amount of bearing vibration and noise.

Correct lubrication is critical to bearing performance, affecting most other aspects and ultimately, bearing life.

SMB Bearing Technical Information