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394D — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

394D: CUP,TAPERED ROLLER BEARING.

The CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include overall_depth: 4.000 INCHES NOMINAL IN, overall_width: 8.000 INCHES NOMINAL IN, overall_length: 8.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-159-9471, 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
394D
NSN: 3110-00-159-9471
NIINs: 001599471, 011840757
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
overall_depth4.000 INCHES NOMINAL IN
overall_width8.000 INCHES NOMINAL IN
overall_length8.000 INCHES NOMINAL IN
special_featuresUSED IN AIR DUCTS; LOCAL OR REMOTE TEST INDICATOR STATION; 12.000 IN. OUTLET TUBE; 36.000 IN. INLET TUBE; POLISHED SWITCHPLATE WITH 1.750 IN. DIA HOLE IN
NSN3110-00-159-9471
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 394D · 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
•
STYLE DESIGNATOR: DOUBLE CUP, NORMAL ANGLE
•
OUTSIDE DIAMETER: 4.3307 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0312 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
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
STYLE DESIGNATORDOUBLE CUP, NORMAL ANGLE
OVERALL WIDTH1.8125 INCHES NOMINAL IN
OUTSIDE DIAMETER4.3307 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0312 INCHES NOMINAL IN
SPECIAL FEATURESOIL HOLE & CHANNEL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
706653Reference document
Same NSN cross-reference
Reference document — Secondary 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 394D?
394D is a CUP,TAPERED ROLLER BEARING.
What parts can replace 394D?
There is 1 known substitute for 394D: 706653. Substitute compatibility should be verified for your specific system.
What is the NSN for 394D?
394D is cataloged in the U.S. Government catalog under NSN 3110-00-159-9471. 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.