Rolling Bearing Terminology
1. Bearing
Rolling Bearing: A bearing that supports loads and allows rolling motion between parts that move relative to each other. It includes parts with raceways and assemblies of rolling elements, with or without isolation or guiding elements. It can be used to withstand radial, axial, or combined radial and axial loads.
Angular Contact Bearing: A rolling bearing with a nominal contact angle between the ball and raceway greater than 0° and less than 90°.
Spherical Roller Bearing: A radial rolling bearing with an outer spherical surface and a wide inner ring with locking elements. Primarily used for simple housings.
Linear Motion Bearing: A rolling bearing in which the two raceways have relative linear motion in the rolling direction.
Ball Bearing: A rolling bearing in which the rolling elements are balls.
Deep Groove Ball Bearing: A radial ball bearing in which each raceway has a continuous groove with a cross-section approximately one-third the circumference of the ball.
Thrust Ball Bearing: A thrust rolling bearing in which the rolling elements are balls.
Roller Bearing: A rolling bearing in which the rolling elements are rollers.
Cylindrical roller bearings: Radial rolling bearings with cylindrical rollers as rolling elements.
Taply tapered roller bearings: Radial rolling bearings with tapered rollers as rolling elements.
Needle roller bearings: Radial rolling bearings with needle rollers as rolling elements.
Spherical roller bearings: Self-aligning radial rolling bearings with convex or concave spherical rollers as rolling elements. Bearings with convex spherical rollers have a spherical raceway on the outer ring; bearings with concave rollers have a spherical raceway on the inner ring.
Thrust roller bearings: Thrust rolling bearings with rollers as rolling elements.
Thrust cylindrical roller bearings: Thrust rolling bearings with cylindrical rollers as rolling elements.
Thrust tapered roller bearings: Thrust rolling bearings with tapered rollers as rolling elements.
Thrust needle roller bearings: Thrust rolling bearings with needle rollers as rolling elements.
Thrust spherical roller bearings: Self-aligning thrust rolling bearings with convex or concave spherical rollers as rolling elements. The raceways of bearing housing rings with convex spherical rollers are spherical, as are the raceways of bearing shaft rings with concave spherical rollers.
Hoofed bearings: A type of radial bearing assembled with a housing, featuring a base plate on a supporting surface parallel to the bearing's axis for mounting screws.
Spherical plain bearings: Bearings with a spherical sliding contact surface, primarily suitable for oscillating, tilting, and rotating motions.
Combined bearings: Rolling bearings composed of two or more of the above-mentioned bearing structures within a single unit. Examples include needle roller and thrust cylindrical roller combined bearings, needle roller and thrust ball combined bearings, and needle roller and angular contact ball combined bearings.
Other bearings: Rolling bearings with structures other than those mentioned above.
Post time: Jun-18-2026
