PartsTable
Technical Data Sheet
Download PDF

383A385 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

383A385: 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: 0.7018 INCHES NOMINAL IN, cone_width: 0.8640 INCHES NOMINAL IN, bore_diameter: 2.1653 INCHES NOMINAL IN, overall_width: 0.8268 INCHES NOMINAL IN, standout_width: 0.1250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-3891, 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
383A385
NSN: 3110-00-100-3891
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.7018 INCHES NOMINAL IN
cone_width0.8640 INCHES NOMINAL IN
bore_diameter2.1653 INCHES NOMINAL IN
overall_width0.8268 INCHES NOMINAL IN
standout_width0.1250 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.0930 INCHES NOMINAL IN
backface_corner_radius0.0780 INCHES NOMINAL IN
overall_outside_diameter3.9370 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-3891
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 383A385 · 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
•
CUP WIDTH: 0.7018 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
OVERALL OUTSIDE DIAMETER: 3.9370 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0780 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0930 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.1250 INCHES NOMINAL IN
•
CONE WIDTH: 0.8640 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
CUP WIDTH0.7018 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
OVERALL WIDTH0.8268 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER3.9370 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0780 INCHES NOMINAL IN
CONE CORNER RADIUS0.0930 INCHES NOMINAL IN
STANDOUT WIDTH0.1250 INCHES NOMINAL IN
CONE WIDTH0.8640 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER2.1653 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 7
M205Reference document
Same NSN cross-reference
Reference document — Secondary reference
UTDM205Reference document
Same NSN cross-reference
Reference document — Secondary reference
703234Reference document
Same NSN cross-reference
Reference document — Secondary reference
K2441Reference document
Same NSN cross-reference
Reference document — Secondary reference
64AX115Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
3110001000303Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 383A385?
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 383A385?
383A385 is a BEARING,ROLLER,TAPERED.
What parts can replace 383A385?
There are 7 known substitutes for 383A385: M205, UTDM205, 703234 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 383A385?
383A385 is cataloged in the U.S. Government catalog under NSN 3110-00-100-3891. 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 — 383A385

✓ 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.