PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 6-54139
6-54139 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

SUPPORT,STRUCTURAL COMPONENT,AIR. Key specifications include end_item_identification: ACFT MODEL B-52. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-3553, 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
6-54139
NSN: 3110-00-100-3553
FSC: 3110
CAGE: 54845 — HOIST LIFTRUCK MFG INC (USA)
SPECIFICATIONS
end_item_identificationACFT MODEL B-52
NSN3110-00-100-3553
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 6-54139 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONE CORNER RADIUS: 0.1406 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CONE WIDTH: 1.0000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
BORE DIAMETER: 1.6250 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
CONE WIDTH1.0000 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
BORE DIAMETER1.6250 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
MH2Interchangeable
interchangeable cross-reference
interchangeable
620-733Interchangeable
interchangeable cross-reference
interchangeable
PC67208-18Interchangeable
interchangeable cross-reference
interchangeable
BM11352-171Interchangeable
interchangeable cross-reference
interchangeable
MS14304Interchangeable
interchangeable cross-reference
interchangeable
MS14304-5AQVInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6-54139?
6-54139 is a SUPPORT,STRUCTURAL COMPONENT,AIR.
What parts can replace 6-54139?
There are 27 known substitutes for 6-54139: MH2, 620-733, PC67208-18 and 24 more. Substitute compatibility should be verified for your specific system.
Is 6-54139 still available?
6-54139 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026