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Technical Data Sheet
PartsTable / COMPONENT / 28NBL4855YJ
28NBL4855YJ ✓ 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 CONE,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, bore_diameter: 1.7500 INCHES NOMINAL IN, overall_width: 3.00 INCHES NOMINAL IN, features_provided: LUBRICATION GROOVE, surface_treatment: CHROMIUM OUTER RING, end_item_identification: VARIOUS C5. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-673-1148, 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
28NBL4855YJ
NSN: 3110-01-673-1148
FSC: 3110
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter1.7500 INCHES NOMINAL IN
overall_width3.00 INCHES NOMINAL IN
features_providedLUBRICATION GROOVE
surface_treatmentCHROMIUM OUTER RING
end_item_identificationVARIOUS C5
overall_outside_diameter3.4375 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyBEARING
NSN3110-01-673-1148
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 28NBL4855YJ · 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
•
BORE DIAMETER: 1.7500 INCHES NOMINAL IN
•
FUNCTIONAL DESCRIPTION: BORE DIAMETER: 1.75"; OUTER RING OUTSIDE DIAMETER: 3.4375"; OVERALL WIDTH: 3"; OUTER RING WIDTH: 2.792";TRACK CONTACT WIDTCH; 2.544";WASHER OUTSIDE DIAMETER: 3.187";LUBRICATION GROOVE WIDTH: 0.375"; FILLET: 0.032" MAXIMUM; TOTAL RADIAL CLEARANCE: 0.0015" MAXIMUM;CLAMPING DIAMETER: 2.281" MINIMUM;LOAD RATING: 92000 LBF; RATING AS A TRACK ROLLER: 69000 LBF; CAPACITY 40HRC: 27000 LBF; MASS: 5.80 LBS LBS
•
FEATURES PROVIDED: LUBRICATION GROOVE
•
OVERALL OUTSIDE DIAMETER: 3.4375 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 (FLIS)
BORE DIAMETER1.7500 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL: SAE-AMS6274; ASTM-A304;ASTM-A576;ASTM-A675;QQ-S-700;FED-STD-66 STEEL 50100,51100 AND 52100;PLATING: OD AND SIDES OF OUTER RING: CHROMIUM PLATE, QQ-C-320, CLASS 2; THICKNESS: .0005-.0010";OTHER SURFACES, EXLUDING INNER RING BORE, ZINC-NICKEL PLATING PER SAE-AMS-2417, TYPE 2, OR CADMIUM PLATING I/A/W QQ-P-416, TYPE 1, CLASS 2, WITH A THICKNESS OF .0003-.0006";MACHINE FINISH PER ASME-B46.1; LUBRICATION: GREASE CONFORMING TO MIL-PRF-81322
PART NAME ASSIGNED BY CONTROLLING AGENCYBEARING
OVERALL WIDTH3.00 INCHES NOMINAL IN
FUNCTIONAL DESCRIPTIONBORE DIAMETER: 1.75"; OUTER RING OUTSIDE DIAMETER: 3.4375"; OVERALL WIDTH: 3"; OUTER RING WIDTH: 2.792";TRACK CONTACT WIDTCH; 2.544";WASHER OUTSIDE DIAMETER: 3.187";LUBRICATION GROOVE WIDTH: 0.375"; FILLET: 0.032" MAXIMUM; TOTAL RADIAL CLEARANCE: 0.0015" MAXIMUM;CLAMPING DIAMETER: 2.281" MINIMUM;LOAD RATING: 92000 LBF; RATING AS A TRACK ROLLER: 69000 LBF; CAPACITY 40HRC: 27000 LBF; MASS: 5.80 LBS LBS
FEATURES PROVIDEDLUBRICATION GROOVE
OVERALL OUTSIDE DIAMETER3.4375 INCHES NOMINAL IN
END ITEM IDENTIFICATIONVARIOUS C5
SURFACE TREATMENTCHROMIUM OUTER RING
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
MS24466-14Interchangeable
interchangeable cross-reference
interchangeable
24466-14Interchangeable
interchangeable cross-reference
interchangeable
14NBL3234YJInterchangeable
interchangeable cross-reference
interchangeable
6NBL1618YJInterchangeable
interchangeable cross-reference
interchangeable
24466-6Interchangeable
interchangeable cross-reference
interchangeable
BACB10B137Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28NBL4855YJ?
28NBL4855YJ is a CONE,TAPERED ROLLER BEARING.
What parts can replace 28NBL4855YJ?
There are 12 known substitutes for 28NBL4855YJ: MS24466-14, 24466-14, 14NBL3234YJ and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 28NBL4855YJ?
28NBL4855YJ is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-673-1148. 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