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6386-6320B — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

6386-6320B: 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: 2.2050 INCHES NOMINAL IN, flange_width: 0.3125 INCHES NOMINAL IN, bore_diameter: 2.6250 INCHES NOMINAL IN, overall_width: 2.1250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-277-0179, 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
6386-6320B
NSN: 3110-00-277-0179
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width1.7500 INCHES NOMINAL IN
cone_width2.2050 INCHES NOMINAL IN
flange_width0.3125 INCHES NOMINAL IN
bore_diameter2.6250 INCHES NOMINAL IN
overall_width2.1250 INCHES NOMINAL IN
standout_width0.6875 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, FLANGED CUP, NORMAL ANGLE
cone_corner_radius0.1710 INCHES NOMINAL IN
cup_outside_diameter5.3447 INCHES NOMINAL IN
backface_corner_radius0.1250 INCHES NOMINAL IN
flange_outside_diameter5.6527 INCHES NOMINAL IN
NSN3110-00-277-0179
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 6386-6320B · 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: 5.3447 INCHES NOMINAL IN
•
FLANGE OUTSIDE DIAMETER: 5.6527 INCHES NOMINAL IN
•
CUP WIDTH: 1.7500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, FLANGED CUP, NORMAL ANGLE
•
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
•
NONDEFINITIVE SPEC/STD DATA: 755 TYPE
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 DIAMETER5.3447 INCHES NOMINAL IN
FLANGE OUTSIDE DIAMETER5.6527 INCHES NOMINAL IN
CUP WIDTH1.7500 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, FLANGED CUP, NORMAL ANGLE
OVERALL WIDTH2.1250 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA755 TYPE
CONE CORNER RADIUS0.1710 INCHES NOMINAL IN
STANDOUT WIDTH0.6875 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 5
007093E66 PIECE 41Reference document
Same NSN cross-reference
Reference document — Secondary reference
7092E61 PIECE 39Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
007092E61 PIECE 39Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7093E66 PIECE 41Reference document
Same NSN cross-reference
Reference document — Secondary reference
FF-B-187Reference document
Same NSN cross-reference
Reference document — Identification 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 6386-6320B?
6386-6320B is a BEARING,ROLLER,TAPERED.
What parts can replace 6386-6320B?
There are 5 known substitutes for 6386-6320B: 007093E66 PIECE 41, 7092E61 PIECE 39, 007092E61 PIECE 39 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6386-6320B?
6386-6320B is cataloged in the U.S. Government catalog under NSN 3110-00-277-0179. 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.