PartsTable
Technical Data Sheet
Download PDF

EPA21410-087 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

EPA21410-087: 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: 1.7500 INCHES NOMINAL IN, cone_width: 2.1250 INCHES NOMINAL IN, flange_width: 0.3125 INCHES NOMINAL IN, bore_diameter: 3.0000 INCHES MINIMUM AND 3.0010 INCHES MAXIMUM IN, overall_width: 2.1250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-943-8095, 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
EPA21410-087
NSN: 3110-00-943-8095
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: F3014 — NAVAL GROUP SITE DE BREST (FRA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width1.7500 INCHES NOMINAL IN
cone_width2.1250 INCHES NOMINAL IN
flange_width0.3125 INCHES NOMINAL IN
bore_diameter3.0000 INCHES MINIMUM AND 3.0010 INCHES MAXIMUM IN
overall_width2.1250 INCHES NOMINAL IN
standout_width0.3750 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, FLANGED CUP, NORMAL ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
cup_outside_diameter5.8740 INCHES MINIMUM AND 5.8750 INCHES MAXIMUM IN
backface_corner_radius0.1250 INCHES NOMINAL IN
flange_outside_diameter6.1835 INCHES NOMINAL IN
NSN3110-00-943-8095
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: EPA21410-087 · 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: PRESSED
•
CUP OUTSIDE DIAMETER: 5.8740 INCHES MINIMUM AND 5.8750 INCHES MAXIMUM IN
•
FLANGE OUTSIDE DIAMETER: 6.1835 INCHES NOMINAL IN
•
CUP WIDTH: 1.7500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, FLANGED CUP, NORMAL ANGLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE CUP
•
BACKFACE CORNER RADIUS: 0.1250 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 METHODPRESSED
CUP OUTSIDE DIAMETER5.8740 INCHES MINIMUM AND 5.8750 INCHES MAXIMUM IN
FLANGE OUTSIDE DIAMETER6.1835 INCHES NOMINAL IN
CUP WIDTH1.7500 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, FLANGED CUP, NORMAL ANGLE
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE CUP
OVERALL WIDTH2.1250 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDOUT WIDTH0.3750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
6461-6420BReference document
Same NSN cross-reference
Reference document — Design control — primary reference
413267-1Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy EPA21410-087?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is EPA21410-087?
EPA21410-087 is a BEARING,ROLLER,TAPERED.
What parts can replace EPA21410-087?
There are 2 known substitutes for EPA21410-087: 6461-6420B, 413267-1. Substitute compatibility should be verified for your specific system.
What is the NSN for EPA21410-087?
EPA21410-087 is cataloged in the U.S. Government catalog under NSN 3110-00-943-8095. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — EPA21410-087

✓ 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.