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Technical Data Sheet
PartsTable / COMPONENT / M12-103A
M12-103A ✓ 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

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL OVERALL, cone_width: 1.0594 INCHES NOMINAL IN, bore_diameter: 1.7500 INCHES NOMINAL IN, style_designator: STEEP ANGLE, cone_corner_radius: 0.0625 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-151-8561, 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
M12-103A
NSN: 3110-00-151-8561
FSC: 3110
CAGE: 08302 — PACCAR WINCH INC DBA PACCAR WINCH DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width1.0594 INCHES NOMINAL IN
bore_diameter1.7500 INCHES NOMINAL IN
style_designatorSTEEP ANGLE
cone_corner_radius0.0625 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-151-8561
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: M12-103A · 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: 1.7500 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0625 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
STYLE DESIGNATOR: STEEP ANGLE
•
MATERIAL: STEEL OVERALL
•
CONE WIDTH: 1.0594 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER1.7500 INCHES NOMINAL IN
CONE CORNER RADIUS0.0625 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
STYLE DESIGNATORSTEEP ANGLE
MATERIALSTEEL OVERALL
CONE WIDTH1.0594 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
08MT-2212Interchangeable
interchangeable cross-reference
interchangeable
55176Interchangeable
interchangeable cross-reference
interchangeable
55-41Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751 TYCSZ36Interchangeable
interchangeable cross-reference
interchangeable
B94.11MInterchangeable
interchangeable cross-reference
interchangeable
150 36Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M12-103A?
M12-103A is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace M12-103A?
There are 25 known substitutes for M12-103A: 08MT-2212, 55176, 55-41 and 22 more. Substitute compatibility should be verified for your specific system.
Is M12-103A still available?
M12-103A is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026