rolling-element bearing
C2Technical / Engineering
Definition
Meaning
A mechanical component that reduces friction between rotating parts by using rolling elements (like balls or rollers) between inner and outer races.
Any bearing design where the primary load transfer uses rolling contact rather than sliding friction, including ball bearings, roller bearings, and needle bearings. It is fundamental in machinery design for enabling efficient, high-speed rotation with minimal energy loss.
Linguistics
Semantic Notes
A hypernym for specific bearing types like 'ball bearing' or 'tapered roller bearing'. The term specifies the operating principle (rolling) rather than a single specific design. Often contrasted with 'plain bearing' or 'sleeve bearing', which use sliding friction.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; the technical term is identical. Spelling conventions follow national norms for accompanying text (e.g., 'behaviour of the bearing' vs. 'behavior of the bearing').
Connotations
None beyond the technical meaning. The term is purely denotative in both dialects.
Frequency
Equal, very high frequency in mechanical engineering contexts in both regions. Virtually unknown in everyday language.
Vocabulary
Collocations
Grammar
Valency Patterns
The [machine] uses a rolling-element bearing to support the [shaft].A [type, e.g., ball] is a common type of rolling-element bearing.Failure analysis of the rolling-element bearing revealed [cause].Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Rare. Might appear in procurement contexts: 'The contract includes supplying rolling-element bearings for the assembly line.'
Academic
Core terminology in mechanical engineering, materials science, and tribology papers and textbooks.
Everyday
Extremely rare. A layperson would simply say 'bearing' or not know the term.
Technical
The primary and precise term used in design manuals, maintenance guides, and engineering discussions to distinguish from other bearing types.
Examples
By Part of Speech
adjective
British English
- The rolling-element bearing design is more efficient for high-speed applications.
- We need a specialist in rolling-element bearing analysis.
American English
- The rolling-element bearing specification calls for special grease.
- This is a rolling-element bearing failure, not a lubrication issue.
Examples
By CEFR Level
- The wheel spins smoothly because it has a bearing inside.
- A broken bearing can cause a machine to make loud noises.
- Unlike plain bearings, rolling-element bearings use balls or cylinders to minimise friction.
- The technician diagnosed the fault as a catastrophic failure of the main rotor's rolling-element bearing.
Learning
Memory Aids
Mnemonic
Think of a skateboard wheel (the rolling element) spinning smoothly on its axle (the bearing). The 'element' rolls, it doesn't slide.
Conceptual Metaphor
A SUPPORT SYSTEM IS A ROAD FOR MOTION. The bearing provides a 'hard, smooth road' (the races) for the 'vehicles' (rolling elements) to carry the load efficiently.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating literally as "катящийся элемент подшипник". The correct equivalent is "подшипник качения".
- Do not confuse with "роликовый подшипник", which is more specific (roller bearing). "Rolling-element bearing" is the general category.
Common Mistakes
- Misspelling as 'rolling element baring'.
- Using it in non-technical contexts where 'bearing' alone would suffice.
- Confusing it with a specific type (e.g., saying 'a rolling-element bearing' when you specifically mean 'a deep-groove ball bearing').
Practice
Quiz
What is the primary advantage of a rolling-element bearing over a plain bearing?
FAQ
Frequently Asked Questions
A ball bearing is a type of rolling-element bearing. 'Rolling-element bearing' is the general category that includes ball bearings, roller bearings, and needle bearings.
Almost exclusively in mechanical engineering contexts: machine design, maintenance manuals, academic papers on tribology, and industrial supply catalogs.
The term highlights the key component—the balls, rollers, or needles—that roll between the two races to carry the load, as opposed to a surface that slides.
In everyday language, yes. In technical discussions, 'bearing' is often sufficient if the type is clear from context. 'Rolling-element bearing' is used for precision or to contrast with other bearing types like hydrodynamic bearings.