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PartsTable / COMPONENT / 271786R91
271786R91 ✓ 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: 0.8433 INCHES NOMINAL IN, bore_diameter: 4.0000 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, cone_corner_radius: 0.0620 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-529-8890, 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
271786R91
NSN: 3110-00-529-8890
FSC: 3110
CAGE: 0SAT8 — KOMATSU AMERICA CORP. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width0.8433 INCHES NOMINAL IN
bore_diameter4.0000 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
cone_corner_radius0.0620 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-529-8890
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 271786R91 · 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: 4.0000 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0620 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CONE WIDTH: 0.8433 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
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 DIAMETER4.0000 INCHES NOMINAL IN
CONE CORNER RADIUS0.0620 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
CONE WIDTH0.8433 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
V1628Interchangeable
interchangeable cross-reference
interchangeable
64450Interchangeable
interchangeable cross-reference
interchangeable
A2232-2Interchangeable
interchangeable cross-reference
interchangeable
484664Interchangeable
interchangeable cross-reference
interchangeable
CA1-521945Interchangeable
Same NIIN cross-reference
interchangeable
103S167Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 271786R91?
271786R91 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 271786R91?
There are 8 known substitutes for 271786R91: V1628, 64450, A2232-2 and 5 more. Substitute compatibility should be verified for your specific system.
Is 271786R91 still available?
271786R91 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026