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29520XX-2-397 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

29520XX-2-397: 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 AND CHROMIUM ALLOY OVERALL, overall_width: 0.7500 INCHES NOMINAL IN, outside_diameter: 4.2500 INCHES MINIMUM AND 4.2510 INCHES MAXIMUM IN, special_features: OPERATIONAL TEMP M 65 DEG F TO P 250 DEG F DEGF, style_designator: NORMAL ANGLE, backface_corner_radius: 0.1300 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-140-6747, 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
29520XX-2-397
NSN: 3110-01-140-6747
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL AND CHROMIUM ALLOY OVERALL
overall_width0.7500 INCHES NOMINAL IN
outside_diameter4.2500 INCHES MINIMUM AND 4.2510 INCHES MAXIMUM IN
special_featuresOPERATIONAL TEMP M 65 DEG F TO P 250 DEG F DEGF
style_designatorNORMAL ANGLE
backface_corner_radius0.1300 INCHES MAXIMUM IN
standard_tolerance_designationAFBMA CLASS 2
material_document_and_classificationSB3266-201,78286 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN3110-01-140-6747
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 29520XX-2-397 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: SB3266-201,78286 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 4.2500 INCHES MINIMUM AND 4.2510 INCHES MAXIMUM IN
•
BACKFACE CORNER RADIUS: 0.1300 INCHES MAXIMUM IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL AND CHROMIUM ALLOY 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
MATERIAL DOCUMENT AND CLASSIFICATIONSB3266-201,78286 MFR REF SINGLE MATERIAL RESPONSE OVERALL
OVERALL WIDTH0.7500 INCHES NOMINAL IN
OUTSIDE DIAMETER4.2500 INCHES MINIMUM AND 4.2510 INCHES MAXIMUM IN
BACKFACE CORNER RADIUS0.1300 INCHES MAXIMUM IN
SPECIAL FEATURESOPERATIONAL TEMP M 65 DEG F TO P 250 DEG F DEGF
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL AND CHROMIUM ALLOY OVERALL
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 1
SB3266-201Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 29520XX-2-397?
29520XX-2-397 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 29520XX-2-397?
There is 1 known substitute for 29520XX-2-397: SB3266-201. Substitute compatibility should be verified for your specific system.
What is the NSN for 29520XX-2-397?
29520XX-2-397 is cataloged in the U.S. Government catalog under NSN 3110-01-140-6747. 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.