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Technical Data Sheet
PartsTable / COMPONENT / MIL-B-81793/4
MIL-B-81793/4 ✓ 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

The MIL-B-81793/4 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-051-9115, 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
MIL-B-81793/4
NSN: 3110-00-051-9115
FSC: 3110
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-B-81793/4
NSN3110-00-051-9115
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MIL-B-81793/4 · 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
•
BORE DIAMETER: 0.0550 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.7
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: ANGULAR
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-PRF-6081,GRADE 1010 MIL SPEC SINGLE MATERIAL RESPONSE
•
INTERNAL CLEARANCE: 0.0001 INCHES MINIMUM RADIAL AND 0.0003 INCHES MAXIMUM RADIAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER0.0550 INCHES NOMINAL IN
SURFACE FINISHGROUND
STANDARD TOLERANCE DESIGNATIONABEC NO.7
BORE SHAPESTRAIGHT
LOAD DIRECTIONANGULAR
SPECIAL FEATURESFULL COMPLEMENT BALLS,NO RETAINER
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-PRF-6081,GRADE 1010 MIL SPEC SINGLE MATERIAL RESPONSE
INTERNAL CLEARANCE0.0001 INCHES MINIMUM RADIAL AND 0.0003 INCHES MAXIMUM RADIAL IN
LUBRICATION MATERIALOIL
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
M81793-BCCDAX0FAA71AX1Interchangeable
Same NIIN cross-reference
interchangeable
M81793-KCCDAX0FAA71AB1Interchangeable
Same NIIN cross-reference
interchangeable
S37P13LY83Interchangeable
Same NIIN cross-reference
interchangeable
S13K13M1L06081Interchangeable
Same NIIN cross-reference
interchangeable
S13K13Interchangeable
Same NIIN cross-reference
interchangeable
M81793/04-CAXN1N1X1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-B-81793/4?
MIL-B-81793/4 is a MIL-B-81793/4.
What parts can replace MIL-B-81793/4?
There are 8 known substitutes for MIL-B-81793/4: M81793-BCCDAX0FAA71AX1, M81793-KCCDAX0FAA71AB1, S37P13LY83 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-B-81793/4?
MIL-B-81793/4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-051-9115. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026