§ 230.99 Tender truck axles.
Current through Sep 25, 2026 · Read all of Part 230
The minimum diameters of axles for various axle loads shall be as follows:
| Axle load (in pounds) | Minimum diameter of journal (in inches) | Minimum diameter of wheel seat (in inches) | Minimum diameter of center (in inches) |
|---|---|---|---|
| 50000 | 5 1/2 | 7 3/8 | 6 7/16 |
| 38000 | 5 | 6 3/4 | 5 7/8 |
| 31000 | 4 1/2 | 6 1/4 | 5 5/16 |
| 22000 | 3 3/4 | 5 | 4 3/8 |
| 15000 | 3 1/4 | 4 5/8 | 3 7/8 |