Standard Handbook of Plant Engineering, Third Edition

Chapter 5.5: Mechanical Equipment: Rolling Element Bearings

Industrial Division Engineering Staff

The Torrington Company
Torrington, Connecticut

GLOSSARY [*]

A-D

Aligning bearing
A bearing which, by virtue of its shape, is capable of considerable misalignment.
Antifriction bearing
A term given to ball and roller bearings to distinguish them from non-rolling-element bearings, i.e., sliding bearings.
Average life
See median life.
Axial internal clearance
The measured maximum possible movement parallel to the bearing axis of the inner ring in relation to the outer ring.
Axial load
See thrust load.
Ball bearing
An antifriction bearing with balls as rolling elements.
Basic dynamic radial (axial) load rating (BDLR/BDALR)
The constant stationary radial load (constant centric axial load) that a rolling bearing can theoretically endure for a basic rating life of 1 million (10 6) revolutions.
Basic static-load rating (BSLR)
The static load that corresponds to a total permanent deformation of ball and race, or roller and race, at the most heavily stressed contact (0.0001 in [0.00254 mm] of the ball or roller diameter).
Bearing runout
Radial or axial displacement of the surface of a bearing relative to a fixed point when one raceway is rotated with respect to the other raceway.
Bearing series
A graduated dimensional listing of a specific type of bearing.
Bore
The area of the bearing making contact with the bearing seat on the shaft.
Boundary dimensions
Dimensions for bore, outside diameter, width, and corners.
Cage
A bearing component that partly surrounds all or several...

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