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Technical Data Sheet
PartsTable / COMPONENT / 43125-43312
43125-43312 ✓ 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,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, cup_width: 0.6875 INCHES NOMINAL IN, cone_width: 0.9478 INCHES NOMINAL IN, bore_diameter: 1.2500 INCHES NOMINAL IN, overall_width: 1.0000 INCHES NOMINAL IN, standout_width: 0.3125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-5810, 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
43125-43312
NSN: 3110-00-100-5810
FSC: 3110
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.6875 INCHES NOMINAL IN
cone_width0.9478 INCHES NOMINAL IN
bore_diameter1.2500 INCHES NOMINAL IN
overall_width1.0000 INCHES NOMINAL IN
standout_width0.3125 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, STEEP ANGLE
cone_corner_radius0.0620 INCHES NOMINAL IN
backface_corner_radius0.0620 INCHES NOMINAL IN
overall_outside_diameter3.1250 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-5810
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 43125-43312 · 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
•
STANDOUT WIDTH: 0.3125 INCHES NOMINAL IN
•
BORE DIAMETER: 1.2500 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 3.1250 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CONE CORNER RADIUS: 0.0620 INCHES NOMINAL IN
•
CONE WIDTH: 0.9478 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)
OVERALL WIDTH1.0000 INCHES NOMINAL IN
STANDOUT WIDTH0.3125 INCHES NOMINAL IN
BORE DIAMETER1.2500 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER3.1250 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
CONE CORNER RADIUS0.0620 INCHES NOMINAL IN
CONE WIDTH0.9478 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, STEEP ANGLE
BACKFACE CORNER RADIUS0.0620 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
19340-3AInterchangeable
interchangeable cross-reference
interchangeable
243273Interchangeable
interchangeable cross-reference
interchangeable
4010-304-022Interchangeable
interchangeable cross-reference
interchangeable
ASTM E1146Interchangeable
interchangeable cross-reference
interchangeable
H-613Interchangeable
interchangeable cross-reference
interchangeable
ASTM E1146-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 43125-43312?
43125-43312 is a BEARING,ROLLER,TAPERED.
What parts can replace 43125-43312?
There are 10 known substitutes for 43125-43312: 19340-3A, 243273, 4010-304-022 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 43125-43312?
43125-43312 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-5810. 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