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Technical Data Sheet
PartsTable / COMPONENT / MIL-B-81793D
MIL-B-81793D ✓ 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440C OUTER RING, bore_shape: STRAIGHT, flange_width: 0.0450 INCHES NOMINAL IN, bore_diameter: 0.2500 INCHES NOMINAL IN, overall_width: 0.1875 INCHES NOMINAL IN, alignment_type: RIGID. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-110-5578, 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-81793D
NSN: 3110-00-110-5578
FSC: 3110
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 440C OUTER RING
bore_shapeSTRAIGHT
flange_width0.0450 INCHES NOMINAL IN
bore_diameter0.2500 INCHES NOMINAL IN
overall_width0.1875 INCHES NOMINAL IN
seal_quantity2
alignment_typeRIGID
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
bearing_seal_typeCONTACT
lubrication_materialOIL
NSN3110-00-110-5578
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MIL-B-81793D · 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
•
OVERALL OUTSIDE DIAMETER: 0.3750 INCHES NOMINAL IN
•
LOAD DIRECTION: RADIAL
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.5
•
LUBRICATION MATERIAL: OIL
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE
•
CALIBRATION DESIGNATOR: C
•
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER0.3750 INCHES NOMINAL IN
LOAD DIRECTIONRADIAL
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
STANDARD TOLERANCE DESIGNATIONABEC NO.5
LUBRICATION MATERIALOIL
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE
CALIBRATION DESIGNATORC
SURFACE FINISHGROUND
BORE SHAPESTRAIGHT
OVERALL WIDTH0.1562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
SSRS77R10XR5E5Interchangeable
interchangeable cross-reference
interchangeable
7599556Interchangeable
interchangeable cross-reference
interchangeable
SR166SSW3CG32Interchangeable
interchangeable cross-reference
interchangeable
MIL-B-81793DInterchangeable
interchangeable cross-reference
interchangeable
MIL-B-81793/4Interchangeable
interchangeable cross-reference
interchangeable
77NM0516ZJ5053J9CL11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-B-81793D?
MIL-B-81793D is a BEARING,BALL,ANNULAR.
What parts can replace MIL-B-81793D?
There are 17 known substitutes for MIL-B-81793D: SSRS77R10XR5E5, 7599556, SR166SSW3CG32 and 14 more. Substitute compatibility should be verified for your specific system.
Is MIL-B-81793D still available?
MIL-B-81793D 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