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A21424CLASS0LES — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

A21424CLASS0LES: 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: 1.8125 INCHES NOMINAL IN, bore_diameter: 2.7500 INCHES MINIMUM AND 2.7505 INCHES MAXIMUM IN, overall_width: 2.3063 INCHES MINIMUM AND 2.3287 INCHES MAXIMUM IN, standout_width: 0.2500 INCHES NOMINAL IN, special_features: DOUBLE CUP AND CONE WITH OIL HOLES. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-012-4587, 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
A21424CLASS0LES
NSN: 3110-01-012-4587
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width1.8125 INCHES NOMINAL IN
bore_diameter2.7500 INCHES MINIMUM AND 2.7505 INCHES MAXIMUM IN
overall_width2.3063 INCHES MINIMUM AND 2.3287 INCHES MAXIMUM IN
standout_width0.2500 INCHES NOMINAL IN
special_featuresDOUBLE CUP AND CONE WITH OIL HOLES
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
cone_corner_radius0.0620 INCHES MINIMUM AND 0.0770 INCHES MAXIMUM IN
backface_corner_radius0.0310 INCHES MINIMUM AND 0.0460 INCHES MAXIMUM IN
overall_outside_diameter4.4995 INCHES MINIMUM AND 4.5000 INCHES MAXIMUM IN
retainer_fabrication_methodSTAMPED
NSN3110-01-012-4587
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A21424CLASS0LES · 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
•
CUP WIDTH: 1.8125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES
•
OVERALL OUTSIDE DIAMETER: 4.4995 INCHES MINIMUM AND 4.5000 INCHES MAXIMUM IN
•
BACKFACE CORNER RADIUS: 0.0310 INCHES MINIMUM AND 0.0460 INCHES MAXIMUM IN
•
CONE CORNER RADIUS: 0.0620 INCHES MINIMUM AND 0.0770 INCHES MAXIMUM IN
•
STANDOUT WIDTH: 0.2500 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
CUP WIDTH1.8125 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
OVERALL WIDTH2.3063 INCHES MINIMUM AND 2.3287 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER4.4995 INCHES MINIMUM AND 4.5000 INCHES MAXIMUM IN
BACKFACE CORNER RADIUS0.0310 INCHES MINIMUM AND 0.0460 INCHES MAXIMUM IN
CONE CORNER RADIUS0.0620 INCHES MINIMUM AND 0.0770 INCHES MAXIMUM IN
STANDOUT WIDTH0.2500 INCHES NOMINAL IN
SPECIAL FEATURESDOUBLE CUP AND CONE WITH OIL HOLES
BORE DIAMETER2.7500 INCHES MINIMUM AND 2.7505 INCHES MAXIMUM IN
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
2994936Reference 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)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is A21424CLASS0LES?
A21424CLASS0LES is a BEARING,ROLLER,TAPERED.
What parts can replace A21424CLASS0LES?
There is 1 known substitute for A21424CLASS0LES: 2994936. Substitute compatibility should be verified for your specific system.
What is the NSN for A21424CLASS0LES?
A21424CLASS0LES is cataloged in the U.S. Government catalog under NSN 3110-01-012-4587. 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.