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77R8MR3CJ — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

77R8MR3CJ: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include bore_shape: STRAIGHT, bore_diameter: 0.4998 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN, overall_width: 0.3075 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: UNGROUND, overall_outside_diameter: 1.1247 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-152-5441, 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
77R8MR3CJ
NSN: 3110-01-152-5441
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 43334 — GENERAL MOTORS CORP DELCO MORAINE NDH DIV (USA)
SPECIFICATIONS
bore_shapeSTRAIGHT
bore_diameter0.4998 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
overall_width0.3075 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishUNGROUND
shield_quantity2
overall_outside_diameter1.1247 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM IN
NSN3110-01-152-5441
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 77R8MR3CJ · 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: UNGROUND
•
SHIELD QUANTITY: 2
•
OVERALL OUTSIDE DIAMETER: 1.1247 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
•
BORE DIAMETER: 0.4998 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISHUNGROUND
SHIELD QUANTITY2
OVERALL WIDTH0.3075 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER1.1247 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
BORE DIAMETER0.4998 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 2
12292905-3Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
12292905Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 77R8MR3CJ?
77R8MR3CJ is a BEARING,BALL,ANNULAR.
What parts can replace 77R8MR3CJ?
There are 2 known substitutes for 77R8MR3CJ: 12292905-3, 12292905. Substitute compatibility should be verified for your specific system.
What is the NSN for 77R8MR3CJ?
77R8MR3CJ is cataloged in the U.S. Government catalog under NSN 3110-01-152-5441. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.