At a glance
Needle bearing
Needle rollers run on an inner ring or a prepared shaft raceway.
Consider for radial load and rotation where the raceway quality and lubricant supply can be controlled.
Bushing
A thin sleeve supports the shaft with a sliding surface.
Consider for appropriate oscillation, contaminated duty or service conditions supported by the selected bushing material.
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 | Needle bearing | Bushing |
|---|---|---|
| Contact | Rolling needles | Sliding shaft/sleeve |
| Shaft hardness | Critical when shaft is the raceway | Specified by bushing material and wear duty |
| Surface finish | Precision raceway finish | Material-specific running finish |
| Lubrication | Required as specified by bearing design | Greased, oiled or qualified dry-running |
| Failure assessment | Raceway fatigue, smearing and contamination | Wear, thermal limit and pressure-velocity limit |
| Thrust | Separate support unless combined design | Separate thrust surface unless flanged design |
Before you choose
- Changing to needles may require shaft hardening and grinding.
- Barbell rotation and industrial continuous-duty rotation are not identical load cases.
- Do not reuse a worn bushing bore without checking needle-bearing housing tolerances.
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
Will needles improve every low-speed joint?
No. Small oscillations, contamination and shaft preparation may favour a properly selected bushing.
Can either design be maintenance-free?
Only within the lubrication and duty conditions stated for the exact product.
Reference basis & limits
- NTN — Rolling bearings technical catalogue: needle roller bearings
- GGB — Differences between roller bearings and plain bearings
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.