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MR-879 — BEARING,ROLLER,NEEDLE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

MR-879: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include bore_diameter: 3.2502 INCHES MINIMUM AND 3.2507 INCHES MAXIMUM IN, overall_width: 4.2400 INCHES MINIMUM AND 4.2500 INCHES MAXIMUM IN, alignment_type: RIGID. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-149-4648, 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
MR-879
NSN: 3110-01-149-4648
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 92563 — MCGILL MANUFACTURING CO, INC (USA)
SPECIFICATIONS
bore_diameter3.2502 INCHES MINIMUM AND 3.2507 INCHES MAXIMUM IN
overall_width4.2400 INCHES MINIMUM AND 4.2500 INCHES MAXIMUM IN
alignment_typeRIGID
NSN3110-01-149-4648
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MR-879 · 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
•
ALIGNMENT TYPE: RIGID
•
BORE DIAMETER: 3.2502 INCHES MINIMUM AND 3.2507 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL WIDTH4.2400 INCHES MINIMUM AND 4.2500 INCHES MAXIMUM IN
ALIGNMENT TYPERIGID
BORE DIAMETER3.2502 INCHES MINIMUM AND 3.2507 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 1
N7749580879Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MR-879?
MR-879 is a BEARING,ROLLER,NEEDLE.
What parts can replace MR-879?
There is 1 known substitute for MR-879: N7749580879. Substitute compatibility should be verified for your specific system.
What is the NSN for MR-879?
MR-879 is cataloged in the U.S. Government catalog under NSN 3110-01-149-4648. 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.