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Technical Data Sheet
PartsTable / COMPONENT / 3B4128
3B4128 ✓ 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,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include length: 39.780 INCHES MINIMUM AND 63.780 INCHES MAXIMUM IN, material: STEEL OVERALL, end_style: CLEVIS AND CLEVIS, body_style: FLAT OPEN BUCKLE, body_width: 0.750 INCHES NOMINAL IN, fork_width: 1.340 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8589, 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
3B4128
NSN: 3110-00-144-8589
FSC: 3110
CAGE: 1QUF0 — KOLBERG-PIONEER, INC (USA)
SPECIFICATIONS
length39.780 INCHES MINIMUM AND 63.780 INCHES MAXIMUM IN
materialSTEEL OVERALL
end_styleCLEVIS AND CLEVIS
body_styleFLAT OPEN BUCKLE
body_width0.750 INCHES NOMINAL IN
fork_width1.340 INCHES NOMINAL IN
seat_angle37.0 DEGREES FIRST END
body_height1.031 INCHES MAXIMUM IN
body_length0.530 INCHES MAXIMUM0.530 INCHES MAXIMUM IN
bonnet_typeINSIDE SCREW
switch_typePUSH
inner_radius0.813 INCHES NOMINAL IN
NSN3110-00-144-8589
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 3B4128 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
3015AInterchangeable
interchangeable cross-reference
interchangeable
P8405D008Interchangeable
interchangeable cross-reference
interchangeable
085-101-0007Interchangeable
interchangeable cross-reference
interchangeable
77503XR1CInterchangeable
interchangeable cross-reference
interchangeable
0100807-00Interchangeable
interchangeable cross-reference
interchangeable
0542228Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3B4128?
3B4128 is a BEARING,BALL,ANNULAR.
What parts can replace 3B4128?
There are 33 known substitutes for 3B4128: 3015A, P8405D008, 085-101-0007 and 30 more. Substitute compatibility should be verified for your specific system.
Is 3B4128 still available?
3B4128 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026