PartsTable
Technical Data Sheet
T251 ✓ 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

PANEL,CONTROL,ELECTRICAL-ELECTRO. Key specifications include material: STEEL OVERALL, thickness: 0.109 INCHES NOMINAL IN, body_width: 2.375 INCHES NOMINAL IN, body_height: 3.188 INCHES NOMINAL IN, body_length: 2.750 INCHES NOMINAL IN, bore_diameter: 2.5080 INCHES MINIMUM AND 2.5120 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-117-0779, 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
T251
NSN: 3110-00-117-0779
FSC: 3110
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.109 INCHES NOMINAL IN
body_width2.375 INCHES NOMINAL IN
body_height3.188 INCHES NOMINAL IN
body_length2.750 INCHES NOMINAL IN
bore_diameter2.5080 INCHES MINIMUM AND 2.5120 INCHES MAXIMUM IN
hole_diameter0.516 INCHES NOMINAL IN
alignment_typeRIGID
inclosure_typeFULLY INCLOSED
overall_height1.0575 INCHES MINIMUM AND 1.0675 INCHES MAXIMUM IN
surface_finishGROUND
mounting_methodUNTHREADED HOLE(S) SINGLE GROUP
NSN3110-00-117-0779
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: T251 · 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 4.3850 INCHES MAXIMUM IN
SURFACE FINISH: GROUND
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
ALIGNMENT TYPE: RIGID
BORE DIAMETER: 2.5080 INCHES MINIMUM AND 2.5120 INCHES MAXIMUM IN
MATERIAL: STEEL OVERALL
STYLE DESIGNATOR: TAPERED ROLLERS, BANDED OD
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER4.3750 INCHES MINIMUM AND 4.3850 INCHES MAXIMUM IN
SPECIAL FEATURESNO OIL HOLE IN BAND; RADIUS AT BORE CHAMFER 0.0325 IN. BY 45 DEG IN
SURFACE FINISHGROUND
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
ALIGNMENT TYPERIGID
BORE DIAMETER2.5080 INCHES MINIMUM AND 2.5120 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORTAPERED ROLLERS, BANDED OD
OVERALL HEIGHT1.0575 INCHES MINIMUM AND 1.0675 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
878-1Interchangeable
interchangeable cross-reference
interchangeable
SMB604237-1Interchangeable
interchangeable cross-reference
interchangeable
38120Interchangeable
interchangeable cross-reference
interchangeable
61A12D26Interchangeable
interchangeable cross-reference
interchangeable
0131120-007Interchangeable
interchangeable cross-reference
interchangeable
01028008Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T251?
T251 is a PANEL,CONTROL,ELECTRICAL-ELECTRO.
What parts can replace T251?
There are 22 known substitutes for T251: 878-1, SMB604237-1, 38120 and 19 more. Substitute compatibility should be verified for your specific system.
Is T251 still available?
T251 is currently cancelled.
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