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Technical Data Sheet
PartsTable / COMPONENT / 273829-78
273829-78 ✓ 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 OVERALL, bore_shape: STRAIGHT, bore_diameter: 25.00 MILLIMETERS NOMINAL MM, contact_angle: 25.0 DEGREES MAXIMUM, overall_width: 0.8125 INCHES NOMINAL IN, load_direction: ANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-4829, 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
273829-78
NSN: 3110-00-156-4829
FSC: 3110
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter25.00 MILLIMETERS NOMINAL MM
contact_angle25.0 DEGREES MAXIMUM
overall_width0.8125 INCHES NOMINAL IN
load_directionANGULAR
surface_finishGROUND
style_designatorLOADING GROOVE, NON-SEPARABLE
lubrication_materialGREASE
overall_outside_diameter52.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
nondefinitive_spec/std_data00 GRADE AND 145 TYPE
NSN3110-00-156-4829
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 273829-78 · 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
•
SURFACE FINISH: GROUND
•
LUBRICATION MATERIAL: GREASE
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
CONTACT ANGLE: 25.0 DEGREES MAXIMUM
•
LOAD DIRECTION: ANGULAR
•
INTERNAL FIT-UP CONTACT ANGULAR DIRECTION: INWARD CONVERGENT
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
LUBRICATION MATERIALGREASE
STANDARD TOLERANCE DESIGNATIONABEC NO.1
CONTACT ANGLE25.0 DEGREES MAXIMUM
LOAD DIRECTIONANGULAR
INTERNAL FIT-UP CONTACT ANGULAR DIRECTIONINWARD CONVERGENT
INTERNAL FIT-UP DESIGNATIONSTANDARD
BORE SHAPESTRAIGHT
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
NONDEFINITIVE SPEC/STD DATA00 GRADE AND 145 TYPE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
8380610Interchangeable
interchangeable cross-reference
interchangeable
5334454Interchangeable
interchangeable cross-reference
interchangeable
D176047Interchangeable
interchangeable cross-reference
interchangeable
1770092Interchangeable
interchangeable cross-reference
interchangeable
906034C1Interchangeable
interchangeable cross-reference
interchangeable
3205EW/VS112Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 273829-78?
273829-78 is a BEARING,BALL,ANNULAR.
What parts can replace 273829-78?
There are 17 known substitutes for 273829-78: 8380610, 5334454, D176047 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 273829-78?
273829-78 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-4829. 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