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Technical Data Sheet
PartsTable / COMPONENT / 1B3947
1B3947 ✓ 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: 0.7620 INCHES NOMINAL IN, bore_diameter: 1.0000 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, cone_corner_radius: 0.0500 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 3110-00-100-0723, 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
1B3947
NSN: 3110-00-100-0723
FSC: 3110
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width0.7620 INCHES NOMINAL IN
bore_diameter1.0000 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
cone_corner_radius0.0500 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0723
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1B3947 · 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CONE CORNER RADIUS: 0.0500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
BORE DIAMETER: 1.0000 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
CONE WIDTH: 0.7620 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)
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
CONE CORNER RADIUS0.0500 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
BORE DIAMETER1.0000 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
CONE WIDTH0.7620 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
505485Interchangeable
interchangeable cross-reference
interchangeable
5315000505485Interchangeable
interchangeable cross-reference
interchangeable
211585Interchangeable
interchangeable cross-reference
interchangeable
1206LT-1B1Interchangeable
interchangeable cross-reference
interchangeable
9506X1Interchangeable
interchangeable cross-reference
interchangeable
1206LTInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1B3947?
1B3947 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 1B3947?
There are 25 known substitutes for 1B3947: 505485, 5315000505485, 211585 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B3947?
1B3947 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0723. 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