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Y63-315330-251 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

Y63-315330-251: 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 OVERALL, cup_width: 0.3400 INCHES NOMINAL IN, cone_width: 0.4400 INCHES NOMINAL IN, bore_diameter: 0.8750 INCHES MINIMUM AND 0.8755 INCHES MAXIMUM IN, overall_width: 0.4400 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN, standout_width: 0.1000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-902-6622, 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
Y63-315330-251
NSN: 3110-00-902-6622
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 10618 — GYRODYNE CO OF AMERICA INC (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 OVERALL
cup_width0.3400 INCHES NOMINAL IN
cone_width0.4400 INCHES NOMINAL IN
bore_diameter0.8750 INCHES MINIMUM AND 0.8755 INCHES MAXIMUM IN
overall_width0.4400 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN
standout_width0.1000 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.0460 INCHES NOMINAL IN
backface_corner_radius0.0460 INCHES NOMINAL IN
overall_outside_diameter1.6563 INCHES MINIMUM AND 1.6573 INCHES MAXIMUM IN
retainer_fabrication_methodPRESSED
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN3110-00-902-6622
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: Y63-315330-251 · 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: 0.3400 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
OVERALL OUTSIDE DIAMETER: 1.6563 INCHES MINIMUM AND 1.6573 INCHES MAXIMUM IN
•
BACKFACE CORNER RADIUS: 0.0460 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0460 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 WIDTH0.3400 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL WIDTH0.4400 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER1.6563 INCHES MINIMUM AND 1.6573 INCHES MAXIMUM IN
BACKFACE CORNER RADIUS0.0460 INCHES NOMINAL IN
CONE CORNER RADIUS0.0460 INCHES NOMINAL IN
STANDOUT WIDTH0.1000 INCHES NOMINAL IN
CONE WIDTH0.4400 INCHES NOMINAL 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

No substitute or cross-reference records for this part.

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 Y63-315330-251?
Y63-315330-251 is a BEARING,ROLLER,TAPERED.
What is the NSN for Y63-315330-251?
Y63-315330-251 is cataloged in the U.S. Government catalog under NSN 3110-00-902-6622. 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.