PartsTable
Technical Data Sheet

YR-2 1/2X — BEARING,ROLLER,NEEDLE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

YR-2 1/2X: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL ROLLER, bore_diameter: 0.7496 INCHES MINIMUM AND 0.7502 INCHES MAXIMUM IN, alignment_type: SELF-ALIGNING, surface_finish: GROUND, inner_ring_width: 1.5525 INCHES MINIMUM AND 1.5675 INCHES MAXIMUM IN, outer_ring_width: 1.4950 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-256-4518, 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
YR-2 1/2X
NSN: 3110-01-256-4518
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 51588 — RBC BEARINGS INCORPORATED DIV WEST TRENTON DIVISION (USA)
SPECIFICATIONS
materialSTEEL ROLLER
bore_diameter0.7496 INCHES MINIMUM AND 0.7502 INCHES MAXIMUM IN
seal_quantity2
alignment_typeSELF-ALIGNING
surface_finishGROUND
inner_ring_width1.5525 INCHES MINIMUM AND 1.5675 INCHES MAXIMUM IN
outer_ring_width1.4950 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
special_featuresCROWNED OD
style_designatorCAM ROLLER, HARDENED AND GROUND, NON-SEPARABLE
bearing_seal_typeCONTACT
features_providedLUBRICATION GROOVE AND LUBRICATION HOLE
self-alignment_locationINTERNAL
NSN3110-01-256-4518
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: YR-2 1/2X · 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
•
BEARING SEAL TYPE: CONTACT
•
OUTER RING WIDTH: 1.4950 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: CAM ROLLER, HARDENED AND GROUND, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 2.4980 INCHES MINIMUM AND 2.4990 INCHES MAXIMUM IN
•
FEATURES PROVIDED: LUBRICATION GROOVE AND LUBRICATION HOLE
•
ALIGNMENT TYPE: SELF-ALIGNING
TECHNICAL CHARACTERISTICS
BEARING SEAL TYPECONTACT
OUTER RING WIDTH1.4950 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
SURFACE FINISHGROUND
STYLE DESIGNATORCAM ROLLER, HARDENED AND GROUND, NON-SEPARABLE
OVERALL OUTSIDE DIAMETER2.4980 INCHES MINIMUM AND 2.4990 INCHES MAXIMUM IN
FEATURES PROVIDEDLUBRICATION GROOVE AND LUBRICATION HOLE
ALIGNMENT TYPESELF-ALIGNING
SPECIAL FEATURESCROWNED OD
SEAL QUANTITY2
BORE DIAMETER0.7496 INCHES MINIMUM AND 0.7502 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 8
Y-80SReference document
Same NSN cross-reference
Reference document — Secondary reference
YCRC-40Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
8821Reference document
Same NSN cross-reference
Reference document — Secondary reference
CCYR-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
YCRS-40Reference document
Same NSN cross-reference
Reference document — Secondary reference
CCYRL-2 1/2-SReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is YR-2 1/2X?
YR-2 1/2X is a BEARING,ROLLER,NEEDLE.
What parts can replace YR-2 1/2X?
There are 8 known substitutes for YR-2 1/2X: Y-80S, YCRC-40, 8821 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for YR-2 1/2X?
YR-2 1/2X is cataloged in the U.S. Government catalog under NSN 3110-01-256-4518. 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.