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45290-45290 CLASS 3 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

45290-45290 CLASS 3: BEARING,ROLLER,TAPERED.

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: 0.9370 INCHES NOMINAL IN, cone_width: 1.2188 INCHES NOMINAL IN, bore_diameter: 2.2500 INCHES MINIMUM AND 2.2505 INCHES MAXIMUM IN, overall_width: 1.1875 INCHES NOMINAL IN, standout_width: 0.2500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-932-5330, 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
45290-45290 CLASS 3
NSN: 3110-00-932-5330
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 0LTL1 — NTN BEARING CORPORATION OF AMERICA (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.9370 INCHES NOMINAL IN
cone_width1.2188 INCHES NOMINAL IN
bore_diameter2.2500 INCHES MINIMUM AND 2.2505 INCHES MAXIMUM IN
overall_width1.1875 INCHES NOMINAL IN
standout_width0.2500 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.0930 INCHES NOMINAL IN
lubrication_materialLUBRICANT
backface_corner_radius0.1250 INCHES NOMINAL IN
overall_outside_diameter4.1250 INCHES MINIMUM AND 4.1251 INCHES MAXIMUM IN
retainer_fabrication_methodSTAMPED
NSN3110-00-932-5330
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 45290-45290 CLASS 3 · 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
•
RETAINER FABRICATION METHOD: STAMPED
•
LUBRICATION MATERIAL: LUBRICANT
•
CUP WIDTH: 0.9370 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
OVERALL OUTSIDE DIAMETER: 4.1250 INCHES MINIMUM AND 4.1251 INCHES MAXIMUM IN
•
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0930 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
RETAINER FABRICATION METHODSTAMPED
LUBRICATION MATERIALLUBRICANT
CUP WIDTH0.9370 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
OVERALL WIDTH1.1875 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER4.1250 INCHES MINIMUM AND 4.1251 INCHES MAXIMUM IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
CONE CORNER RADIUS0.0930 INCHES NOMINAL IN
STANDOUT WIDTH0.2500 INCHES NOMINAL IN
CONE WIDTH1.2188 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
2523796Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 45290-45290 CLASS 3?
45290-45290 CLASS 3 is a BEARING,ROLLER,TAPERED.
What parts can replace 45290-45290 CLASS 3?
There is 1 known substitute for 45290-45290 CLASS 3: 2523796. Substitute compatibility should be verified for your specific system.
What is the NSN for 45290-45290 CLASS 3?
45290-45290 CLASS 3 is cataloged in the U.S. Government catalog under NSN 3110-00-932-5330. 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.