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(1) basic working mechanism
Is the basic working principle of rolling bearings: roller bearing inner ring and shaft Assembly, outer ring and bearing Assembly. Usually the inner ring with trunnion Rotary, fixed in the outer ring, but can also make the rotation in the outer ring and inner ring does not move, or inner and outer rings while rotating. When the inner and outer rings relative rotation, rolling the scroll through the inner and outer ring raceway. Classified primarily by rolling shape of rolling bearings, bearing force and structure classification, structure generally consists of rolling bearing inner ring, outer ring, rolling elements and cage composition. The most common single row ball bearing. Number of columns to scroll, bearing or bearing can be divided into two columns, and multiple columns, within the same set of bearings with rolling two or more columns. Installed between the bearing rings or rings, axes, block a number of rolling, rolling elements evenly by cage, cage to prevent rolling collide, to reduce resistance so that bearings can reach higher speeds. Rolling bearings have a variety of structures. However, the basic structure is composed of inner ring, outer ring, rolling elements and cage consisting. Rolling element (steel ball, roller or needle roller) bearings with cages usually evenly arranged in two rings rolling between movements, shapes, sizes and quantities directly affect the load bearing capacity and performance.
(2) various parts of bearing
For radial spherical plain bearings, the inner ring is often the shaft tight fit, and operate with the axis, outer ring and housing usually or excessive mechanical shell hole tie, plays a supporting role. However, in some instances, also operate in the outer ring, inner ring fixed play a supporting role or inner ring, outer ring while running.
Thrust bearing, together with the shaft tight fit and movement of shaft washer, bearings or mechanical shell hole transition fit plays a supporting role in that seat. Rolling element (steel ball, roller or needle roller) bearings with cages usually evenly arranged in two rings rolling between movements, shapes, sizes, and quantities directly affect the load bearing capacity and performance. Cage other than can be separated from the rolling elements evenly, also can play rolling elements rotate and improve bearing an internal lubrication properties and so on.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7004ATYNSULP4 NSK | 20 | 42 | 12 |
| 7004A5TYNSULP4 NSK | 20 | 42 | 12 |