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Some common terms for Ball bearings and Roller bearings

Some common terms and definitions of Ball bearings and Roller bearings

　 Ball bearings:

　　1. Ball bearing: The rolling element is the rolling bearing of the ball;

　　2. Radial ball bearing: the rolling element is the radial rolling bearing of the ball;

　　3. Deep groove ball bearings: each ring has a continuous groove raceway with a cross-section of about one-third of the circumference of the ball;

　　4. Filling groove ball bearing: Filling groove on one flange of each ring of groove ball bearing so that more balls can be filled;

　　5. Lock ball bearing: groove ball bearing with one flange of the outer ring completely or partially removed;

　　6. Three-point contact ball bearings : When a single row angular contact ball bearing is subjected to a pure radial load, each loaded ball has two points of contact with one channel and one point of contact with the other channel. When subjected to pure axial loads, each ball has only one point of contact with each channel;

　　7. Four-point contact ball bearing : single row angular contact ball bearing, when subjected to pure radial load, each loaded ball has two points of contact with two channels, and when subjected to pure axial load, each has only one point of contact;

　　8. Thrust ball bearing: The rolling element is the thrust rolling bearing of the ball;

　　9. Single-row two-way thrust ball bearing: four-point contact ball bearing with contact angle greater than 45°;

　　10. Double row unidirectional thrust ball bearings: unidirectional thrust ball bearings with concentric raceways of double rows and bearing loads in the same direction.

Roller bearings:

　　1. Roller bearing: the rolling element is the rolling bearing of the roller;

　　2. Radial roller bearing: The rolling element is the radial rolling bearing of the roller;

　　3. Cylindrical roller bearing: the rolling element is the radial rolling bearing of cylindrical rollers;

　　4. Tapered roller bearing: the rolling element is the radial rolling bearing of tapered rollers;

　　5. Needle roller bearing: the rolling element is the centripetal rolling bearing of needle roller;

　　6. Stamped outer ring needle roller bearing: thin steel plate stamping (stretching) outer ring radial needle roller bearing, one end of which is closed or both ends open, often used without inner ring;

　　7. (Convex) spherical roller bearing: the rolling element is the radial rolling bearing of the convex spherical roller;

　　8. Concave roller bearing: the rolling element is the radial rolling bearing of the concave roller;

　　9. Spherical roller bearing: the rolling element is a convex spherical or concave roller aligning radial rolling bearing, with a convex spherical roller bearing, the outer ring has a spherical raceway, there is a concave roller bearing, and the inner ring has a spherical raceway;

　　10. Crossed roller bearings: there is an angular contact rolling bearing with a row of rollers, and the adjacent rollers are crossed into a cross arrangement so that half of the rollers (every second roller) are subjected to an axial load in one direction, and the axial load in the opposite direction is borne by the other half of the rollers;

　　11. Thrust roller bearing: the rolling element is the thrust rolling bearing of the roller;

　　12. Thrust cylindrical roller bearing: the rolling element is a thrust rolling bearing of cylindrical rollers;

　　13. Thrust tapered roller bearing: the rolling element is the thrust rolling bearing of tapered rollers;

　　14. Thrust needle roller bearing: the rolling element is the thrust rolling bearing of the needle roller;

         15. Thrust spherical roller bearings: The rolling elements are self-aligning thrust rolling bearings of convex spherical or concave rollers. The raceway of the bearing ring with convex spherical rollers is spherical, and the raceway of the shaft coil with concave spherical roller bearing is spherical.