PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 228K
228K ✓ 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 material: STEEL OUTER RING, bore_shape: STRAIGHT, bore_diameter: 140.00 MILLIMETERS NOMINAL MM, overall_width: 42.0 MILLIMETERS NOMINAL MM, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8970, 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
228K
NSN: 3110-00-144-8970
FSC: 3110
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL OUTER RING
bore_shapeSTRAIGHT
bore_diameter140.00 MILLIMETERS NOMINAL MM
overall_width42.0 MILLIMETERS NOMINAL MM
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter250.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
nondefinitive_spec/std_data111 TYPE AND 1 CLASS AND 00 GRADE
standard_tolerance_designationABEC NO.1
NSN3110-00-144-8970
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 228K · 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
•
NONDEFINITIVE SPEC/STD DATA: 111 TYPE AND 1 CLASS AND 00 GRADE
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
MATERIAL: STEEL BALL
•
OVERALL OUTSIDE DIAMETER: 250.00 MILLIMETERS NOMINAL MM
•
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATA111 TYPE AND 1 CLASS AND 00 GRADE
STANDARD TOLERANCE DESIGNATIONABEC NO.1
MATERIALSTEEL BALL
MATERIALSTEEL INNER RING
MATERIALCOPPER ALLOY RETAINER
OVERALL OUTSIDE DIAMETER250.00 MILLIMETERS NOMINAL MM
SURFACE FINISHGROUND
OVERALL WIDTH42.0 MILLIMETERS NOMINAL MM
BORE DIAMETER140.00 MILLIMETERS NOMINAL MM
LOAD DIRECTIONRADIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 35
C271AInterchangeable
interchangeable cross-reference
interchangeable
E-18082Interchangeable
interchangeable cross-reference
interchangeable
C-228Interchangeable
interchangeable cross-reference
interchangeable
03031-50Interchangeable
interchangeable cross-reference
interchangeable
3B4128Interchangeable
interchangeable cross-reference
interchangeable
601352Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 228K?
228K is a BEARING,BALL,ANNULAR.
What parts can replace 228K?
There are 35 known substitutes for 228K: C271A, E-18082, C-228 and 32 more. Substitute compatibility should be verified for your specific system.
Is 228K still available?
228K 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