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Technical Data Sheet
PartsTable / COMPONENT / MJ1 1/8
MJ1 1/8 ✓ 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 MJ1 1/8 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-038-4666, 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
MJ1 1/8
NSN: 3110-01-038-4666
FSC: 3110
CAGE: K7182 — NSK UK LTD (GBR)
SPECIFICATIONS
Part NumberMJ1 1/8
NSN3110-01-038-4666
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MJ1 1/8 · 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
•
OVERALL OUTSIDE DIAMETER: 2.8115 INCHES MINIMUM AND 2.8120 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
RETAINER FABRICATION METHOD: PRESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP E52100 OVERALL
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER2.8115 INCHES MINIMUM AND 2.8120 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
INTERNAL FIT-UP DESIGNATIONSTANDARD
RETAINER FABRICATION METHODPRESSED
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP E52100 OVERALL
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
LOAD DIRECTIONRADIAL
BORE DIAMETER1.1247 INCHES MINIMUM AND 1.1252 INCHES MAXIMUM IN
SURFACE FINISHGROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
S300Interchangeable
interchangeable cross-reference
interchangeable
150LInterchangeable
interchangeable cross-reference
interchangeable
WH-1Interchangeable
interchangeable cross-reference
interchangeable
MS11Interchangeable
interchangeable cross-reference
interchangeable
Z770Interchangeable
interchangeable cross-reference
interchangeable
B5-59-402Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MJ1 1/8?
MJ1 1/8 is a MJ1 1/8.
What parts can replace MJ1 1/8?
There are 14 known substitutes for MJ1 1/8: S300, 150L, WH-1 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MJ1 1/8?
MJ1 1/8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-038-4666. 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