Common Terms and Definitions of Rolling Bearings (6)
Rolling bearings are essential components in many mechanical systems. Understanding the terminology related to these bearings is crucial for proper selection, installation, and maintenance. Here are some key terms and definitions that you should be familiar with:
3. Bearing Equipment and Sub-Components
1. Paired Device (Paired Mounting): Two rolling bearings mounted on the same axis with their faces aligned. They can be considered as a single unit during operation. This configuration can be back-to-back, face-to-face, or in tandem.
2. Combination Device: Three or more rolling bearings mounted on the same axis, with their faces aligned. These can also be treated as a single unit during operation.
3. Back-to-Back Arrangement: Two sets of bearings mounted such that their outer rings are facing opposite directions.
4. Face-to-Face Arrangement: Two sets of bearings mounted so that their outer rings face each other.
5. Tandem Arrangement: Two or more bearings arranged in a line, with the outer ring of one set facing the inner ring of the next set.
6. Paired Matched Set: Two bearings selected or manufactured based on specific characteristics (usually preload or clearance) and installed together according to specified rules.
7. Matched Stacked Set: Three or more bearings that are matched based on their characteristics (such as preload or clearance) and installed together following specific guidelines.
Sub-Units
1. Sub-Unit: A bearing component, such as a ring, washer, cage, or rolling element, that can be removed independently from the bearing. It may also refer to a rolling element and cage assembly that can be separated from the bearing.
2. Interchangeable Sub-Unit: A sub-unit that can be replaced by another sub-unit of the same group without affecting the bearing’s performance.
3. Inner Ring, Cage, and Ball (Roller) Assembly: A sub-assembly consisting of the inner ring, rolling elements (balls or rollers), and the cage.
4. Conical Inner Ring Assembly (Cone Assembly): A sub-assembly made up of a conical inner ring, tapered rollers, and a cage.
5. Outer Ring, Cage, and Ball (Roller) Assembly: A sub-assembly including the outer ring, rolling elements, and the cage.
6. Needle Roller Bearing Without an Inner Ring: A sub-assembly that includes an outer ring and full-loaded needle rollers or a combination of needle rollers and a cage. For example, it could be described as "needle roller bearing with cage; stamped outer ring; no inner ring."
Rolling Element and Cage Assemblies
1. Rolling Element and Cage Assembly: A sub-assembly consisting of the rolling elements and the cage.
2. Ball (Roller) and Cage Assembly: A sub-assembly composed of the rolling elements (balls or rollers) and the cage. This is typically used for radial or thrust bearings unless otherwise specified.
3. Ball and Cage Radial (Thrust) Assembly: A ball and cage assembly designed for radial or thrust ball bearings.
4. Roller and Cage Radial (Thrust) Assembly: A roller and cage assembly used in radial or thrust roller bearings. The type of roller can be specified, such as "needle and cage thrust assembly" or "cylindrical roller and cage radial assembly."
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