230.99—Tender truck axles.
The minimum diameters of axles for various axle loads shall be as follows:
| Axle load (in pounds) | Minimumdiameter of journal(in inches) | Minimumdiameter of wheel seat(in inches) | Minimumdiameter of center(in inches) |
|---|---|---|---|
| 50000 | 51/2 | 73/8 | 67/16 |
| 38000 | 5 | 63/4 | 57/8 |
| 31000 | 41/2 | 61/4 | 55/16 |
| 22000 | 33/4 | 5 | 43/8 |
| 15000 | 31/4 | 45/8 | 37/8 |