« Back to Dictionary Index
A ball bearing is a crucial component in various mechanical applications, known for its efficiency in reducing friction and supporting rotational or axial loads. Here are the key components and workings of a typical ball bearing:
- Inner and Outer Races: These are the hardened steel rings or tracks that contain the bearing balls. The inner race is mounted onto a shaft, while the outer race is typically stationary and mounted into a housing or support structure.
- Bearing Balls: Made of hardened steel, these balls are positioned between the inner and outer races. They roll smoothly along the raceways, reducing friction and wear compared to sliding contact.
- Cage or Separator: The cage, often made of metal or synthetic material, holds the bearing balls evenly spaced apart. It prevents the balls from touching each other, maintaining their position within the bearing assembly and ensuring smooth rotation.
- Function: When a load is applied, the bearing balls distribute the load evenly across their surface, allowing for smooth and efficient rotation of the inner race relative to the outer race or vice versa.
Ball bearings come in various designs and sizes to accommodate different load capacities, speeds, and environmental conditions. They are widely used in applications ranging from automotive components to industrial machinery and household appliances, where reducing friction and ensuring smooth operation are critical.
See Related Terms:
- Annular ball bearing
- Linear ball bearing
- Loose Ball Bearings