49 C.F.R. § 230.99 Tender truck axles.
Title 49 - Transportation
The minimum diameters of axles for various axle loads shall be as follows:
Title 49: Transportation
PART 230—STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS
Subpart C—Steam Locomotives and Tenders
Running Gear
§ 230.99 Tender truck axles.
---------------------------------------------------------------------------------------------------------------- Minimum Minimum Minimum diameter of diameter of diameter of Axle load (in pounds) journal (in wheel seat (in center (in inches) inches) 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\----------------------------------------------------------------------------------------------------------------
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