PartsTable
Technical Data Sheet
251W ✓ 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,ROLLER,THRUST is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 2.5080 INCHES MINIMUM AND 2.5120 INCHES MAXIMUM IN, alignment_type: RIGID, overall_height: 1.0575 INCHES MINIMUM AND 1.0675 INCHES MAXIMUM IN, surface_finish: GROUND, special_features: W/OIL HOLE IN BAND ALSO RADIUS AT OBRE CHAMFER 1/32 IN. BY 45 DEG IN.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-117-0777, 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
251W
NSN: 3110-00-117-0777
FSC: 3110
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter2.5080 INCHES MINIMUM AND 2.5120 INCHES MAXIMUM IN
alignment_typeRIGID
overall_height1.0575 INCHES MINIMUM AND 1.0675 INCHES MAXIMUM IN
surface_finishGROUND
special_featuresW/OIL HOLE IN BAND ALSO RADIUS AT OBRE CHAMFER 1/32 IN. BY 45 DEG IN
style_designatorTAPERED ROLLERS, BANDED OD
overall_outside_diameter4.3750 INCHES MINIMUM AND 4.3800 INCHES MAXIMUM IN
thrust_directional_capability_designationSINGLE
NSN3110-00-117-0777
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 251W · 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
OVERALL OUTSIDE DIAMETER: 4.3750 INCHES MINIMUM AND 4.3800 INCHES MAXIMUM IN
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
ALIGNMENT TYPE: RIGID
BORE DIAMETER: 2.5080 INCHES MINIMUM AND 2.5120 INCHES MAXIMUM IN
SURFACE FINISH: GROUND
STYLE DESIGNATOR: TAPERED ROLLERS, BANDED OD
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER4.3750 INCHES MINIMUM AND 4.3800 INCHES MAXIMUM IN
SPECIAL FEATURESW/OIL HOLE IN BAND ALSO RADIUS AT OBRE CHAMFER 1/32 IN. BY 45 DEG IN
OVERALL HEIGHT1.0575 INCHES MINIMUM AND 1.0675 INCHES MAXIMUM IN
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
ALIGNMENT TYPERIGID
BORE DIAMETER2.5080 INCHES MINIMUM AND 2.5120 INCHES MAXIMUM IN
SURFACE FINISHGROUND
STYLE DESIGNATORTAPERED ROLLERS, BANDED OD
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
104-44-29Interchangeable
interchangeable cross-reference
interchangeable
4438Interchangeable
interchangeable cross-reference
interchangeable
1112Interchangeable
interchangeable cross-reference
interchangeable
MANAGEInterchangeable
interchangeable cross-reference
interchangeable
44 3/8Interchangeable
interchangeable cross-reference
interchangeable
J513Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 251W?
251W is a BEARING,ROLLER,THRUST.
What parts can replace 251W?
There are 15 known substitutes for 251W: 104-44-29, 4438, 1112 and 12 more. Substitute compatibility should be verified for your specific system.
Is 251W still available?
251W is currently cancelled.
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