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54943-121 — WEDGE,RAILWAY JOURNAL BEARING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

54943-121: WEDGE,RAILWAY JOURNAL BEARING.

The WEDGE,RAILWAY JOURNAL BEARING is a the manufacturer industrial component. Key specifications include nondefinitive_spec/std_data: D CLASS, general_characteristics_item_description: STEEL; AAR CLASS D; DIM OF AXLE JOURNAL W/WHICH USED 5.5 IN. DIA 10 IN.

LG IN. This part is cataloged in the U.S. Government catalog under NSN 2240-00-179-0366, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
54943-121
NSN: 2240-00-179-0366
FSC: 2240 — Locomotive and Rail Car Accessories and Components
CAGE: 02280 — AMERICAN HOIST AND DERRICK CO
SPECIFICATIONS
nondefinitive_spec/std_dataD CLASS
general_characteristics_item_descriptionSTEEL; AAR CLASS D; DIM OF AXLE JOURNAL W/WHICH USED 5.5 IN. DIA 10 IN. LG IN
NSN2240-00-179-0366
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available WEDGE,RAILWAY JOURNAL BEARING TITLE COMPONENT PN 54943-121 MFR WEDGE,RAILWAY JOURNAL
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL; AAR CLASS D; DIM OF AXLE JOURNAL W/WHICH USED 5.5 IN. DIA 10 IN. LG IN
•
NONDEFINITIVE SPEC/STD DATA: D CLASS
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL; AAR CLASS D; DIM OF AXLE JOURNAL W/WHICH USED 5.5 IN. DIA 10 IN. LG IN
NONDEFINITIVE SPEC/STD DATAD CLASS
SUBSTITUTES & CROSS-REFERENCES 8
D25DReference document
Same NSN cross-reference
Reference document — Secondary reference
54076Reference document
Same NSN cross-reference
Reference document — Secondary reference
2144876Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
136X93Reference document
Same NSN cross-reference
Reference document — Secondary reference
4759027Reference document
Same NSN cross-reference
Reference document — Secondary reference
996-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 54943-121?
54943-121 is a WEDGE,RAILWAY JOURNAL BEARING.
What parts can replace 54943-121?
There are 8 known substitutes for 54943-121: D25D, 54076, 2144876 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 54943-121?
54943-121 is cataloged in the U.S. Government catalog under NSN 2240-00-179-0366. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.