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Technical Data Sheet
PartsTable / COMPONENT / 54A319
54A319 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

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_width: 0.6250 INCHES NOMINAL IN, outside_diameter: 12.7500 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, backface_corner_radius: 0.0620 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-275-0103, 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
54A319
NSN: 3110-00-275-0103
FSC: 3110
CAGE: 94830 — PELLERIN MILNOR CORPORATION (USA)
SPECIFICATIONS
overall_width0.6250 INCHES NOMINAL IN
outside_diameter12.7500 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
backface_corner_radius0.0620 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-275-0103
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 54A319 · 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: NORMAL ANGLE
•
BACKFACE CORNER RADIUS: 0.0620 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 12.7500 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
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 (FLIS)
STYLE DESIGNATORNORMAL ANGLE
BACKFACE CORNER RADIUS0.0620 INCHES NOMINAL IN
OVERALL WIDTH0.6250 INCHES NOMINAL IN
OUTSIDE DIAMETER12.7500 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
29820Interchangeable
interchangeable cross-reference
interchangeable
5320000074-00Interchangeable
interchangeable cross-reference
interchangeable
L140125Interchangeable
interchangeable cross-reference
interchangeable
L140125-14Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54A319?
54A319 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 54A319?
There are 4 known substitutes for 54A319: 29820, 5320000074-00, L140125 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 54A319?
54A319 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-275-0103. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026