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Technical Data Sheet
PartsTable / COMPONENT / B3286
B3286 ✓ 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: 0.8750 INCHES NOMINAL IN, cone_width: 1.1772 INCHES NOMINAL IN, bore_diameter: 1.7500 INCHES NOMINAL IN, overall_width: 1.0938 INCHES NOMINAL IN, standout_width: 0.2188 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-101-3137, 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
B3286
NSN: 3110-00-101-3137
FSC: 3110
CAGE: 14541 — COOPER MACHINERY SERVICES LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.8750 INCHES NOMINAL IN
cone_width1.1772 INCHES NOMINAL IN
bore_diameter1.7500 INCHES NOMINAL IN
overall_width1.0938 INCHES NOMINAL IN
standout_width0.2188 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0930 INCHES NOMINAL IN
overall_outside_diameter3.7500 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-101-3137
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: B3286 · 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 WIDTH: 1.1772 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BACKFACE CORNER RADIUS: 0.0930 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 3.7500 INCHES NOMINAL IN
•
CUP WIDTH: 0.8750 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 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 WIDTH1.1772 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BACKFACE CORNER RADIUS0.0930 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER3.7500 INCHES NOMINAL IN
CUP WIDTH0.8750 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDOUT WIDTH0.2188 INCHES NOMINAL IN
OVERALL WIDTH1.0938 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
120250Interchangeable
interchangeable cross-reference
interchangeable
D39290REVAInterchangeable
interchangeable cross-reference
interchangeable
52387Interchangeable
interchangeable cross-reference
interchangeable
184112H1Interchangeable
interchangeable cross-reference
interchangeable
4-38Interchangeable
interchangeable cross-reference
interchangeable
5315-7-2B2-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B3286?
B3286 is a BEARING,ROLLER,TAPERED.
What parts can replace B3286?
There are 29 known substitutes for B3286: 120250, D39290REVA, 52387 and 26 more. Substitute compatibility should be verified for your specific system.
Is B3286 still available?
B3286 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