Application Overview
Bearing positions on Power Transmission
KOYO Bearing Supplier supplies Koyo / JTEKT bearings for Power Transmission by matching each replacement to the machine model, bearing position and original specification — not to dimensions alone.
Axles, gearboxes, reducers and compact drive mechanisms use tapered, cylindrical and needle roller bearings to carry combined loads and keep shafts in position. Gear mesh loads, shaft deflection and lubrication quality decide how long these bearings last. Buyers repairing a transmission want every bearing in the assembly identified correctly so the unit goes back together in one repair.
- Use tapered roller bearings in axles and gearbox shafts where radial and axial loads act together, and keep the original mounting arrangement.
- Use needle roller bearings in compact mechanisms where radial space is limited, and confirm whether the design runs with or without an inner ring.
- Replace bearings on the same shaft in pairs during a gearbox overhaul, so new and worn bearings do not run together.
- Confirm the lubrication type, oil or grease, before choosing the seal and cage options.


