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Technical Data Sheet
PartsTable / COMPONENT / 312MFF
312MFF ✓ 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 SHIELD, bore_shape: STRAIGHT, bore_diameter: 60.00 MILLIMETERS NOMINAL MM, overall_width: 31.0 MILLIMETERS NOMINAL MM, load_direction: RADIAL, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-6779, 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
312MFF
NSN: 3110-00-155-6779
FSC: 3110
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
materialSTEEL SHIELD
bore_shapeSTRAIGHT
bore_diameter60.00 MILLIMETERS NOMINAL MM
overall_width31.0 MILLIMETERS NOMINAL MM
load_directionRADIAL
surface_finishGROUND
shield_quantity2
style_designatorLOADING GROOVE, NON-SEPARABLE
lubrication_materialGREASE
overall_outside_diameter130.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
standard_tolerance_designationABEC NO.1
NSN3110-00-155-6779
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 312MFF · 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
•
BORE DIAMETER: 60.00 MILLIMETERS NOMINAL MM
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: DOD-G-24508 MIL SPEC SINGLE MATERIAL RESPONSE
•
SURFACE FINISH: GROUND
•
LUBRICATION MATERIAL: GREASE
•
BORE SHAPE: STRAIGHT
•
SHIELD QUANTITY: 2
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH31.0 MILLIMETERS NOMINAL MM
BORE DIAMETER60.00 MILLIMETERS NOMINAL MM
INTERNAL FIT-UP DESIGNATIONSTANDARD
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONDOD-G-24508 MIL SPEC SINGLE MATERIAL RESPONSE
SURFACE FINISHGROUND
LUBRICATION MATERIALGREASE
BORE SHAPESTRAIGHT
SHIELD QUANTITY2
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
4285-7Interchangeable
interchangeable cross-reference
interchangeable
NW4285-7Interchangeable
interchangeable cross-reference
interchangeable
820-4445999-3Interchangeable
interchangeable cross-reference
interchangeable
842945Interchangeable
interchangeable cross-reference
interchangeable
700660Interchangeable
interchangeable cross-reference
interchangeable
MILE1TYPE1N38AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 312MFF?
312MFF is a BEARING,BALL,ANNULAR.
What parts can replace 312MFF?
There are 28 known substitutes for 312MFF: 4285-7, NW4285-7, 820-4445999-3 and 25 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 312MFF?
312MFF is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-6779. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026