PartsTable
Technical Data Sheet
PartsTable / COMPONENT / MC312
MC312 ✓ 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,ROLLER,JOURNAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 3.0000 INCHES NOMINAL IN, overall_width: 2.1250 INCHES NOMINAL IN, style_designator: SOLID OUTER RACE, NO INNER RACE, overall_outside_diameter: 5.1181 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA STD TOLERANCES FOR JOURNAL BEARINGS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-158-8636, 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
MC312
NSN: 3110-00-158-8636
FSC: 3110
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter3.0000 INCHES NOMINAL IN
overall_width2.1250 INCHES NOMINAL IN
style_designatorSOLID OUTER RACE, NO INNER RACE
overall_outside_diameter5.1181 INCHES NOMINAL IN
standard_tolerance_designationAFBMA STD TOLERANCES FOR JOURNAL BEARINGS
NSN3110-00-158-8636
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MC312 · 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
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SOLID OUTER RACE, NO INNER RACE
•
BORE DIAMETER: 3.0000 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCES FOR JOURNAL BEARINGS
•
OVERALL OUTSIDE DIAMETER: 5.1181 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH2.1250 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORSOLID OUTER RACE, NO INNER RACE
BORE DIAMETER3.0000 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCES FOR JOURNAL BEARINGS
OVERALL OUTSIDE DIAMETER5.1181 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
917005Interchangeable
interchangeable cross-reference
interchangeable
MS51846-13Interchangeable
interchangeable cross-reference
interchangeable
100620Interchangeable
interchangeable cross-reference
interchangeable
MC-31-2Interchangeable
interchangeable cross-reference
interchangeable
050-107-98215Interchangeable
interchangeable cross-reference
interchangeable
A5609 MOD CEL-S2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MC312?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MC312?
MC312 is a BEARING,ROLLER,JOURNAL.
What parts can replace MC312?
There are 13 known substitutes for MC312: 917005, MS51846-13, 100620 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MC312?
MC312 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-158-8636. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MC312

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026