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Technical Data Sheet
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BT26830 — Technical Data Sheet

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— · 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, overall_width: 0.8125 INCHES NOMINAL IN, outside_diameter: 3.1562 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, backface_corner_radius: 0.0312 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the Federal Logistics Information System under NSN 3110-00-100-0559, 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
BT26830
NSN: 3110-00-100-0559
FSC: 3110
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.8125 INCHES NOMINAL IN
outside_diameter3.1562 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
backface_corner_radius0.0312 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0559
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: BT26830 · 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
•
BACKFACE CORNER RADIUS: 0.0312 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.1562 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
MATERIAL: STEEL OVERALL
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
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
BACKFACE CORNER RADIUS0.0312 INCHES NOMINAL IN
OUTSIDE DIAMETER3.1562 INCHES NOMINAL IN
OVERALL WIDTH0.8125 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
MATERIALSTEEL OVERALL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
26830InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
17169InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
6525NCM116979InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
DELL LAPTOPInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
D44923AInterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
675544InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BT26830?
BT26830 is a CUP,TAPERED ROLLER BEARING.
What parts can replace BT26830?
There are 11 known substitutes for BT26830: 26830, 17169, 6525NCM116979 and 8 more. Substitute compatibility should be verified for your specific system.
Is BT26830 still available?
BT26830 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: September 2026