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A-38511F — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

A-38511F: 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 cup_width: 1.2402 INCHES NOMINAL IN, cone_width: 1.4961 INCHES NOMINAL IN, bore_diameter: 3.3457 INCHES MINIMUM AND 3.3465 INCHES MAXIMUM IN, overall_width: 3.3799 INCHES MINIMUM AND 3.3858 INCHES MAXIMUM IN, standout_width: 0.2952 INCHES MINIMUM IN, special_features: BEARING CONSISTS OF P/N JHM516849,JHM516810,W/CONE SPACER HM516849XS AND CUP SPACER HM516810ES. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-247-2146, 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
A-38511F
NSN: 3110-01-247-2146
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
cup_width1.2402 INCHES NOMINAL IN
cone_width1.4961 INCHES NOMINAL IN
bore_diameter3.3457 INCHES MINIMUM AND 3.3465 INCHES MAXIMUM IN
overall_width3.3799 INCHES MINIMUM AND 3.3858 INCHES MAXIMUM IN
standout_width0.2952 INCHES MINIMUM IN
special_featuresBEARING CONSISTS OF P/N JHM516849,JHM516810,W/CONE SPACER HM516849XS AND CUP SPACER HM516810ES
style_designatorSTRAIGHT BORE, SINGLE CUPS, SINGLE CONES CUP AND CONE SPACERS
cone_corner_radius0.1200 INCHES MAXIMUM IN
backface_corner_radius0.0400 INCHES MAXIMUM IN
overall_outside_diameter5.5108 INCHES MINIMUM AND 5.5118 INCHES MAXIMUM IN
NSN3110-01-247-2146
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A-38511F · 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: 1.2402 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, SINGLE CUPS, SINGLE CONES CUP AND CONE SPACERS
•
OVERALL OUTSIDE DIAMETER: 5.5108 INCHES MINIMUM AND 5.5118 INCHES MAXIMUM IN
•
BACKFACE CORNER RADIUS: 0.0400 INCHES MAXIMUM IN
•
CONE CORNER RADIUS: 0.1200 INCHES MAXIMUM IN
•
STANDOUT WIDTH: 0.2952 INCHES MINIMUM IN
•
CONE WIDTH: 1.4961 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 WIDTH1.2402 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, SINGLE CUPS, SINGLE CONES CUP AND CONE SPACERS
OVERALL WIDTH3.3799 INCHES MINIMUM AND 3.3858 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER5.5108 INCHES MINIMUM AND 5.5118 INCHES MAXIMUM IN
BACKFACE CORNER RADIUS0.0400 INCHES MAXIMUM IN
CONE CORNER RADIUS0.1200 INCHES MAXIMUM IN
STANDOUT WIDTH0.2952 INCHES MINIMUM IN
CONE WIDTH1.4961 INCHES NOMINAL IN
SPECIAL FEATURESBEARING CONSISTS OF P/N JHM516849,JHM516810,W/CONE SPACER HM516849XS AND CUP SPACER HM516810ES
BORE DIAMETER3.3457 INCHES MINIMUM AND 3.3465 INCHES MAXIMUM 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 1
2001507Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A-38511F?
A-38511F is a BEARING,ROLLER,TAPERED.
What parts can replace A-38511F?
There is 1 known substitute for A-38511F: 2001507. Substitute compatibility should be verified for your specific system.
What is the NSN for A-38511F?
A-38511F is cataloged in the U.S. Government catalog under NSN 3110-01-247-2146. This indicates validated use in U.S. government and defense supply chains.
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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.