needle bearing
Definition
- Noun:
- A type of roller bearing that uses long, thin cylindrical rollers resembling needles. These rollers have a much smaller diameter compared to their length, which allows the bearing to support high loads within a very compact space.
Usage
- Noun: The term "needle bearing" is used to specify a mechanical component in engineering, manufacturing, and repair contexts. It describes the bearing's physical construction and its advantage (high load capacity in a small design envelope).
- The compact design of the gearbox was made possible by using a needle bearing.
- When replacing the clutch, check the condition of the needle bearing on the transmission input shaft.
Advanced Usage
- Technical Specification: In technical documents, "needle bearing" is often used with specifications for dimensions (e.g., inner diameter, outer diameter, width) and load ratings.
- The assembly requires a needle bearing with a 10mm bore and a dynamic load rating of 8 kN.
Variants and Related Words
- Needle Roller Bearing: A full technical synonym for "needle bearing."
- Roller Bearing: A broader category of bearings that use cylindrical rollers, which includes needle bearings as a subtype.
- Cage: The component within a needle bearing that separates and guides the needle rollers.
- Thrust Needle Bearing: A variant designed to handle axial (thrust) loads rather than radial loads.
Synonyms
- Needle Roller Bearing
Antonyms
- Plain Bearing / Sleeve Bearing: A bearing without rolling elements, using a sliding surface.
- Ball Bearing: A bearing that uses spherical balls as its rolling elements.
Notes on the Reference Context
The provided reference context states "bearings containing small metal balls." This is an incorrect definition. A bearing containing small metal balls is a ball bearing. A needle bearing specifically contains long, thin cylindrical rollers, not balls. The correct definition is provided above.
Noun
-
bearings containing small metal balls
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