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 |