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Technical Data Sheet
PartsTable / COMPONENT / M-181
M-181 ✓ 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 color: BLACK, outside_diameter: 60.0 MILLIMETERS NOMINAL MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-4875, 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
M-181
NSN: 3110-00-156-4875
FSC: 3110
CAGE: 45149 — OSGOOD CO THE (USA)
SPECIFICATIONS
colorBLACK
outside_diameter60.0 MILLIMETERS NOMINAL MM
special_featuresDOOR THICKNESS RANGE 1 TO 7 MM;LATCH AND MOUNTING CUP MATERIAL ACETAL;MAX STATIC LOAD 135N(30LBS);AVG ULTIMATE LOAD 175N(39LBS);OPERATING TEMPERATURE RANGE -40 TO 80 C LBS
NSN3110-00-156-4875
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: M-181 · 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
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
•
SURFACE FINISH: GROUND
•
CONTACT ANGLE: 25.0 DEGREES MAXIMUM
•
INTERNAL FIT-UP CONTACT ANGULAR DIRECTION: INWARD CONVERGENT
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH1.5625 INCHES NOMINAL IN
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
SURFACE FINISHGROUND
CONTACT ANGLE25.0 DEGREES MAXIMUM
INTERNAL FIT-UP CONTACT ANGULAR DIRECTIONINWARD CONVERGENT
INTERNAL FIT-UP DESIGNATIONSTANDARD
STANDARD TOLERANCE DESIGNATIONABEC NO.1
BORE SHAPESTRAIGHT
LUBRICATION MATERIALGREASE
LOAD DIRECTIONANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
306FFInterchangeable
interchangeable cross-reference
interchangeable
386P436G01Interchangeable
interchangeable cross-reference
interchangeable
177002-131Interchangeable
interchangeable cross-reference
interchangeable
B2028P12Interchangeable
interchangeable cross-reference
interchangeable
160229Interchangeable
interchangeable cross-reference
interchangeable
H160229Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M-181?
M-181 is a BEARING,BALL,ANNULAR.
What parts can replace M-181?
There are 29 known substitutes for M-181: 306FF, 386P436G01, 177002-131 and 26 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M-181?
M-181 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-4875. 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