At a glance
Rolling contact
An assembly of raceways and rolling elements guides motion.
Consider for defined rotary load ratings, predictable mounting dimensions and appropriate starting behaviour.
Sliding contact
A shaft or other moving surface slides against a bearing material or supported fluid film.
Consider when oscillation, geometry, damping or a qualified plain-bearing material suits the mechanism.
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 | Rolling contact | Sliding contact |
|---|---|---|
| Contact mechanism | Rolling elements and raceways | Sliding surface or separating film |
| Primary life model | Rolling fatigue plus lubrication and contamination | Wear, film stability and material limits |
| Counterface | Bearing rings or a qualified direct raceway | Shaft finish, hardness and material compatibility |
| Lubrication | Oil or grease as designed | Dry-qualified, boundary, hydrodynamic or hydrostatic |
| Oscillation | Check fretting and lubricant replenishment | Check wear and pressure-velocity duty |
| Space | Defined rolling-element envelope | Can permit a thin or tailored bearing surface |
Before you choose
- Anti-friction is a historical name for rolling bearings, not a zero-friction claim.
- Hydrodynamic operation needs appropriate speed, clearance, load and viscosity.
- Do not apply a rolling-bearing L10 result to a plain-bearing wear limit.
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
Are sliding bearings always in metal-to-metal contact?
No. Fluid-film and composite designs can separate the surfaces in different ways.
Is lower friction guaranteed with rolling contact?
No. The comparison depends on start-up, speed, lubrication regime and seals.
Reference basis & limits
- GGB — Differences between roller bearings and plain bearings
- NTN — Rolling bearings technical catalogue, No. 2203
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.