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5.
Axles.
A railcar shall not be placed in or continue in service if:
An axle has a crack or is broken.
An axle has a gouge in the surface that is between the wheel seats or more than 1/8
inch in depth.
A journal shows evidence of a fused bearing or overheating, as evidenced by a
pronounced blue-black discoloration.
The surface of the plain bearing journal on the axle, or the fillet on the axle, has a
ridge, a depression, a circumferential score, a corrugation, a scratch, a continuous
streak, broken collar, seaminess (ridge around the axle), rough inside end collar, or
cuts pitting, rust, evidence of welding, or etching.
Wear limits have been exceeded. See Tables A-1 through A-3 for wear limits.
Plain axle journal wear limits.
Figure A-16. Plain axle journal.
Table 5-1. Plain axle journal wear limits.
REJECT WHEN REACHED
Journal Size
Journal
Journal
Journal
Standard
Collar
Length
Diameter
A
B
G
4 x 8"
3/16"
8 11/16"
3
"
5x9
3/16"
8 11/16"
4
"
5 x 10"
3/16"
8 11/16"
5"
6 x 11"
3/16"
8 11/16"
5
"
6 x 12"
3/16"
8 11/16"
6
"
7 x 12"
3/16"
8 11/16"
6
"
A - 17


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