{"data":{"id":"us/49-cfr-230.99","jurisdiction":"us","citation":"49 CFR 230.99","heading":"Tender truck axles.","body":"The minimum diameters of axles for various axle loads shall be as follows:\nAxle load (in pounds) Minimum diameter of journal (in inches) Minimum diameter of wheel seat (in inches) Minimum diameter of center (in inches)\n50000 51⁄2 73⁄8 67⁄16\n38000 5 63⁄4 57⁄8\n31000 41⁄2 61⁄4 55⁄16\n22000 33⁄4 5 43⁄8\n15000 31⁄4 45⁄8 37⁄8","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 230—STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS","Subpart C—Steam Locomotives and Tenders"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"3f632fa6647c6907c13983788fa1f3d5d5c26f7f33e6a78a53a0be46479dd408","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-230.98","next":"us/49-cfr-230.100"},"notice":"GroundRules: Original legal text. Not legal advice."}