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Technical Data Sheet
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2X6646A — Technical Data Sheet

✓ 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: 1.2910 INCHES NOMINAL IN, bore_diameter: 1.8750 INCHES NOMINAL IN, style_designator: STEEP ANGLE, cone_corner_radius: 0.0310 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the Federal Logistics Information System under NSN 3110-00-227-3394, 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
2X6646A
NSN: 3110-00-227-3394
FSC: 3110
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width1.2910 INCHES NOMINAL IN
bore_diameter1.8750 INCHES NOMINAL IN
style_designatorSTEEP ANGLE
cone_corner_radius0.0310 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-227-3394
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 2X6646A · 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
•
BORE DIAMETER: 1.8750 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0310 INCHES NOMINAL IN
•
CONE WIDTH: 1.2910 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: STEEP 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
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER1.8750 INCHES NOMINAL IN
CONE CORNER RADIUS0.0310 INCHES NOMINAL IN
CONE WIDTH1.2910 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORSTEEP ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
72188InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A72188InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
L-2191InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
22617InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
125002InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
33-179InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2X6646A?
2X6646A is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 2X6646A?
There are 13 known substitutes for 2X6646A: 72188, A72188, L-2191 and 10 more. Substitute compatibility should be verified for your specific system.
Is 2X6646A still available?
2X6646A is currently cancelled.
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Last verified: September 2026