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Technical Data Sheet
PartsTable / COMPONENT / A218259Z
A218259Z ✓ 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: 0.6875 INCHES NOMINAL IN, cone_width: 0.9550 INCHES NOMINAL IN, bore_diameter: 1.1250 INCHES NOMINAL IN, overall_width: 0.9688 INCHES NOMINAL IN, standout_width: 0.2813 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-5807, 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
A218259Z
NSN: 3110-00-100-5807
FSC: 3110
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.6875 INCHES NOMINAL IN
cone_width0.9550 INCHES NOMINAL IN
bore_diameter1.1250 INCHES NOMINAL IN
overall_width0.9688 INCHES NOMINAL IN
standout_width0.2813 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, STEEP ANGLE
cone_corner_radius0.1870 INCHES NOMINAL IN
backface_corner_radius0.0620 INCHES NOMINAL IN
overall_outside_diameter2.8593 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 4
NSN3110-00-100-5807
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A218259Z · 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
•
OVERALL OUTSIDE DIAMETER: 2.8593 INCHES NOMINAL IN
•
BORE DIAMETER: 1.1250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, STEEP ANGLE
•
CONE WIDTH: 0.9550 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 4
•
MATERIAL: STEEL OVERALL
•
STANDOUT WIDTH: 0.2813 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1870 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)
OVERALL OUTSIDE DIAMETER2.8593 INCHES NOMINAL IN
BORE DIAMETER1.1250 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, STEEP ANGLE
CONE WIDTH0.9550 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 4
MATERIALSTEEL OVERALL
STANDOUT WIDTH0.2813 INCHES NOMINAL IN
CONE CORNER RADIUS0.1870 INCHES NOMINAL IN
OVERALL WIDTH0.9688 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0620 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
NPS5-2-2-5KIInterchangeable
interchangeable cross-reference
interchangeable
10136Interchangeable
interchangeable cross-reference
interchangeable
247ASC1739-001Interchangeable
interchangeable cross-reference
interchangeable
SCD10559-10136Interchangeable
interchangeable cross-reference
interchangeable
601367Interchangeable
interchangeable cross-reference
interchangeable
D15-640IPC626Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A218259Z?
A218259Z is a BEARING,ROLLER,TAPERED.
What parts can replace A218259Z?
There are 21 known substitutes for A218259Z: NPS5-2-2-5KI, 10136, 247ASC1739-001 and 18 more. Substitute compatibility should be verified for your specific system.
Is A218259Z still available?
A218259Z 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