Truck and Bus Driveline and Chassis
Hubs, Wheels and Bearings
Hub seals, tapered and unit wheel bearings, hub assemblies, wheel studs and nuts, steel rims, speed sensor rings and hub caps.
Features
- Unit bearings are supplied preset and are not adjusted on fitting, which removes the main source of early hub seal failure.
- Tapered bearing pairs are set to a specified preload or endplay, measured with a dial gauge rather than judged by feel.
- Hub seal running surfaces are inspected for grooving, since a new seal on a scored surface leaks within weeks.
- Wheel studs and nuts are replaced where thread or seat damage is found, and torque is applied in a set pattern in stages.
- Rim condition at the bead seat and stud holes decides whether a rim goes back on, because cracks start at the stud holes.
Specifications
| Figure | Typical range | Unit | Why it matters |
|---|---|---|---|
| Bearing type | tapered pair / preset unit | Different fitting and setting procedure. | |
| Endplay or preload | 0.05 - 0.15 | mm | Seal and bearing life. |
| Stud pattern | 10 x 335 | mm | Hub and rim compatibility. |
| Rim size | 22.5 x 9.00 / 22.5 x 11.75 | Tyre fitment and load rating. |