At a glance
Ball bearing
Balls and raceways support rotary motion with a defined internal geometry.
Choose where the rotary duty, starting torque and required shaft accuracy suit a rolling-bearing arrangement.
Bushing
A plain sleeve may use bronze, polymer, composite or another specified bearing material.
Choose for a suitable oscillating or sliding duty, available space and the material's pressure/velocity limits.
Key differences
Typical design distinctions. The complete designation and current product specification take precedence.
Swipe the table horizontally to see both options →
| What to compare | Ball bearing | Bushing |
|---|---|---|
| Contact | Rolling contact | Sliding interface |
| Motion | Normally rotary for the products discussed here | Rotary, oscillating or sliding according to design |
| Shaft surface | Fit and shoulder requirements | Shaft finish and hardness can be running-surface requirements |
| Lubrication | Grease or oil as specified | Lubricated or qualified self-lubricating material |
| Life limit | Fatigue, lubricant and contamination | Wear, temperature and pressure-velocity limits |
| Space | Defined ring and rolling-element section | Can offer a thin bearing wall |
Before you choose
- Bushing material and shaft finish are a matched specification.
- Self-lubricating does not mean unlimited load or speed.
- Oscillation can create different wear and lubrication conditions from full rotation.
Check the actual model
Search a full designation, inspect its technical data, then compare candidate records. Similar names or dimensions do not guarantee interchangeability.
Filters show recorded catalogue attributes. Open each candidate to confirm its exact specification.
A few things worth clarifying
Does a bushing always have more friction?
Its friction depends on material and lubrication regime; compare the actual duty.
Can a bushing support thrust?
A flanged or thrust design may do so, but a plain radial sleeve alone does not establish that capacity.
Reference basis & limits
- GGB — Differences between roller bearings and plain bearings
- NSK — Industrial Motor Bearings: bearing types and selection
Independent explanatory content; not a manufacturer endorsement or approval of a replacement. Verify current product data, fits, lubrication and operating conditions before applying a comparison.