PartsTable
Technical Data Sheet
Download PDF

3021420-3 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

3021420-3: 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 COMP E52100 SEPARATOR SLUG, cup_width: 2.4375 INCHES NOMINAL IN, bore_diameter: 4.0000 INCHES MINIMUM AND 4.0010 INCHES MAXIMUM IN, overall_width: 3.2499 INCHES MINIMUM AND 3.2659 INCHES MAXIMUM IN, standout_width: 0.4062 INCHES NOMINAL IN, special_features: WITH CONE SPACER,OIL HOLE AND GROOVE IN CUP,BENCH LATERAL 0.0060 IN. IN.

This part is cataloged in the U.S. Government catalog under NSN 3110-01-006-9116, 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
3021420-3
NSN: 3110-01-006-9116
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 SEPARATOR SLUG
cup_width2.4375 INCHES NOMINAL IN
bore_diameter4.0000 INCHES MINIMUM AND 4.0010 INCHES MAXIMUM IN
overall_width3.2499 INCHES MINIMUM AND 3.2659 INCHES MAXIMUM IN
standout_width0.4062 INCHES NOMINAL IN
special_featuresWITH CONE SPACER,OIL HOLE AND GROOVE IN CUP,BENCH LATERAL 0.0060 IN. IN
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0300 INCHES NOMINAL IN
overall_outside_diameter6.3750 INCHES MINIMUM AND 6.3760 INCHES MAXIMUM IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationAFBMA CLASS 2
NSN3110-01-006-9116
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 3021420-3 · 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: PRESSED
•
CUP WIDTH: 2.4375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES
•
OVERALL OUTSIDE DIAMETER: 6.3750 INCHES MINIMUM AND 6.3760 INCHES MAXIMUM IN
•
BACKFACE CORNER RADIUS: 0.0300 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.4062 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 WIDTH2.4375 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
OVERALL WIDTH3.2499 INCHES MINIMUM AND 3.2659 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER6.3750 INCHES MINIMUM AND 6.3760 INCHES MAXIMUM IN
BACKFACE CORNER RADIUS0.0300 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDOUT WIDTH0.4062 INCHES NOMINAL IN
SPECIAL FEATURESWITH CONE SPACER,OIL HOLE AND GROOVE IN CUP,BENCH LATERAL 0.0060 IN. IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
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
52400-52637DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
Ready to buy 3021420-3?
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 3021420-3?
3021420-3 is a BEARING,ROLLER,TAPERED.
What parts can replace 3021420-3?
There is 1 known substitute for 3021420-3: 52400-52637D. Substitute compatibility should be verified for your specific system.
What is the NSN for 3021420-3?
3021420-3 is cataloged in the U.S. Government catalog under NSN 3110-01-006-9116. 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 — 3021420-3

✓ 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.