Needle roller bearings deliver high radial capacity in the smallest radial cross-section of any rolling bearing type - the choice where the design envelope is tight.
Used in gearboxes, automotive transmissions, piston pins and rocker arms. Drawn-cup versions without an inner ring run directly on a hardened shaft journal.
Process Overview
Needle roller bearings use long, thin rollers (a far higher length-to-diameter ratio than cylindrical rollers), giving high radial load capacity in the smallest radial cross-section of any rolling bearing type.
That makes them the choice where the design envelope is tight: gearboxes, automotive transmissions, piston pins and rocker arms. Drawn-cup versions without an inner ring run directly on a hardened shaft journal.
Materials
Bearing steel (GCr15 / 52100) as standard.
| Material / grade | Standard | Key property | Where it fits |
|---|
Finishes
Standard finishing per product standards; anti-corrosion packaging for export.
| Finish | What it does | Specify it when |
|---|
Tolerances
Dimensional and running tolerances to ISO precision classes P0-P6 as standard (P5/P4 on request for applicable types).
| Callout | What it needs | Effect on cost and lead time |
|---|
Capability commitments on this page are owner-confirmed .