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Technical Data Sheet
PartsTable / COMPONENT / 103S2
103S2 ✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, overall_width: 0.3437 INCHES NOMINAL IN, outside_diameter: 1.3775 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, backface_corner_radius: 0.0460 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0630, 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
103S2
NSN: 3110-00-100-0630
FSC: 3110
CAGE: 06840 — BENDIX CORP THE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.3437 INCHES NOMINAL IN
outside_diameter1.3775 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
backface_corner_radius0.0460 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0630
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 103S2 · 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
•
BACKFACE CORNER RADIUS: 0.0460 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
OUTSIDE DIAMETER: 1.3775 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
STYLE DESIGNATOR: NORMAL ANGLE
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)
BACKFACE CORNER RADIUS0.0460 INCHES NOMINAL IN
OVERALL WIDTH0.3437 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
OUTSIDE DIAMETER1.3775 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
40S11NInterchangeable
interchangeable cross-reference
interchangeable
40S11N/1Interchangeable
interchangeable cross-reference
interchangeable
9740Interchangeable
interchangeable cross-reference
interchangeable
11DMAS1009Interchangeable
interchangeable cross-reference
interchangeable
MAS1009Interchangeable
interchangeable cross-reference
interchangeable
50251Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 103S2?
103S2 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 103S2?
There are 15 known substitutes for 103S2: 40S11N, 40S11N/1, 9740 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 103S2?
103S2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0630. 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