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Technical Data Sheet
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W312KLL — Technical Data Sheet

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— · 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 INNER RING, bore_shape: STRAIGHT, bore_diameter: 60.00 MILLIMETERS NOMINAL MM, overall_width: 2.1250 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System under NSN 3110-00-158-8269, 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
W312KLL
NSN: 3110-00-158-8269
FSC: 3110
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL INNER RING
bore_shapeSTRAIGHT
bore_diameter60.00 MILLIMETERS NOMINAL MM
overall_width2.1250 INCHES NOMINAL IN
seal_quantity2
load_directionRADIAL
surface_finishGROUND
special_featuresW/O GREASE PLUG
bearing_seal_typeCONTACT
lubrication_materialGREASE
overall_outside_diameter130.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
NSN3110-00-158-8269
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: W312KLL · 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
•
SEAL QUANTITY: 2
•
BORE SHAPE: STRAIGHT
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
BEARING SEAL TYPE: CONTACT
•
LUBRICATION MATERIAL: GREASE
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE CARTRIDGE TYPE
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS
SEAL QUANTITY2
BORE SHAPESTRAIGHT
INTERNAL FIT-UP DESIGNATIONSTANDARD
SEAL QUANTITY2
BEARING SEAL TYPECONTACT
LUBRICATION MATERIALGREASE
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE CARTRIDGE TYPE
STANDARD TOLERANCE DESIGNATIONABEC NO.1
LUBRICATION MATERIALGREASE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
W312PPFS50381AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
6301-3224689PC16InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
W312PPFS381AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
85785REVAPC3InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
S3612G66InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
FFB171InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is W312KLL?
W312KLL is a BEARING,BALL,ANNULAR.
What parts can replace W312KLL?
There are 12 known substitutes for W312KLL: W312PPFS50381A, 6301-3224689PC16, W312PPFS381A and 9 more. Substitute compatibility should be verified for your specific system.
Is W312KLL still available?
W312KLL 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: October 2026