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Technical Data Sheet
PartsTable / COMPONENT / 9Y251
9Y251 ✓ 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

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL OVERALL, cone_width: 1.1772 INCHES NOMINAL IN, bore_diameter: 1.3750 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, cone_corner_radius: 0.0312 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0244, 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
9Y251
NSN: 3110-00-100-0244
FSC: 3110
CAGE: 04741 — WHITE MOTOR CORP OGDEN TRUCK PLANT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width1.1772 INCHES NOMINAL IN
bore_diameter1.3750 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
cone_corner_radius0.0312 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0244
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 9Y251 · 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
•
CONE CORNER RADIUS: 0.0312 INCHES NOMINAL IN
•
BORE DIAMETER: 1.3750 INCHES NOMINAL IN
•
CONE WIDTH: 1.1772 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
STYLE DESIGNATOR: NORMAL ANGLE
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
CONE CORNER RADIUS0.0312 INCHES NOMINAL IN
BORE DIAMETER1.3750 INCHES NOMINAL IN
CONE WIDTH1.1772 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
601816Interchangeable
interchangeable cross-reference
interchangeable
449Interchangeable
interchangeable cross-reference
interchangeable
612153Interchangeable
interchangeable cross-reference
interchangeable
316-320PC4Interchangeable
interchangeable cross-reference
interchangeable
ASA-50X72 LINKSInterchangeable
interchangeable cross-reference
interchangeable
278LTEInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9Y251?
9Y251 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 9Y251?
There are 24 known substitutes for 9Y251: 601816, 449, 612153 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9Y251?
9Y251 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0244. 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