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Technical Data Sheet
PartsTable / COMPONENT / MIL-B-81793/8
MIL-B-81793/8 ✓ 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-81793/8 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-019-8617, 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-81793/8
NSN: 3110-00-019-8617
FSC: 3110
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-B-81793/8
NSN3110-00-019-8617
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MIL-B-81793/8 · 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
•
OUTER RING OUTSIDE DIAMETER: 0.5000 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
FLANGE OUTSIDE DIAMETER: 0.5470 INCHES NOMINAL IN
•
FLANGE WIDTH: 0.0310 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.7
•
SHIELD QUANTITY: 2
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH0.1562 INCHES NOMINAL IN
OUTER RING OUTSIDE DIAMETER0.5000 INCHES NOMINAL IN
SURFACE FINISHGROUND
FLANGE OUTSIDE DIAMETER0.5470 INCHES NOMINAL IN
FLANGE WIDTH0.0310 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONABEC NO.7
SHIELD QUANTITY2
LOAD DIRECTIONRADIAL
INTERNAL CLEARANCE0.0002 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
M81793/08-KA1C2N1A1Interchangeable
Same NIIN cross-reference
interchangeable
SFR1810PPK25-7Interchangeable
Same NIIN cross-reference
interchangeable
GB520CJ20Interchangeable
Same NIIN cross-reference
interchangeable
S8516FRHHP25Interchangeable
Same NIIN cross-reference
interchangeable
309-1798-00Interchangeable
Same NIIN cross-reference
interchangeable
414643-17Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-B-81793/8?
MIL-B-81793/8 is a MIL-B-81793/8.
What parts can replace MIL-B-81793/8?
There are 9 known substitutes for MIL-B-81793/8: M81793/08-KA1C2N1A1, SFR1810PPK25-7, GB520CJ20 and 6 more. Substitute compatibility should be verified for your specific system.
Is MIL-B-81793/8 still available?
MIL-B-81793/8 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