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209901 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

209901: CUP,TAPERED ROLLER BEARING.

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: 0.6250 INCHES NOMINAL IN, outside_diameter: 3.5433 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, backface_corner_radius: 0.0781 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0294, 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
209901
NSN: 3110-00-100-0294
NIINs: 001000294, 011692412
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 92392 — ALLIS-CHALMERS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.6250 INCHES NOMINAL IN
outside_diameter3.5433 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
backface_corner_radius0.0781 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0294
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 209901 · 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
•
STYLE DESIGNATOR: NORMAL ANGLE
•
OUTSIDE DIAMETER: 3.5433 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0781 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
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
STYLE DESIGNATORNORMAL ANGLE
OVERALL WIDTH0.6250 INCHES NOMINAL IN
OUTSIDE DIAMETER3.5433 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0781 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 9
138017Reference document
Same NSN cross-reference
Reference document — Secondary reference
12805AReference document
Same NSN cross-reference
Reference document — Secondary reference
827441Reference document
Same NSN cross-reference
Reference document — Secondary reference
0209901-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
252966Reference document
Same NSN cross-reference
Reference document — Secondary reference
59721HReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 209901?
209901 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 209901?
There are 9 known substitutes for 209901: 138017, 12805A, 827441 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 209901?
209901 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0294. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.