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Technical Data Sheet
PartsTable / COMPONENT / L4287
L4287 ✓ 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 angle: 90.0 DEGREES, width: 6.500 INCHES NOMINAL IN, height: 0.562 INCHES NOMINAL IN, length: 10.000 INCHES NOMINAL IN, material: PLASTIC, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0371, 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
L4287
NSN: 3110-00-100-0371
FSC: 3110
CAGE: 73782 — TOWMOTOR CORP DALLAS PLANT SUB OF CATERPILLAR TRACTOR CO (USA)
SPECIFICATIONS
angle90.0 DEGREES
width6.500 INCHES NOMINAL IN
height0.562 INCHES NOMINAL IN
length10.000 INCHES NOMINAL IN
materialPLASTIC
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
body_styleSTRAIGHT SHAPE, EXTERNAL/INTERNAL COUPLING
shell_typeSOLID
body_length0.828 INCHES NOMINAL IN
head_height0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
load_rating38.300 POUNDS NOMINAL LBS
shank_length2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN
NSN3110-00-100-0371
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: L4287 · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
799167Interchangeable
interchangeable cross-reference
interchangeable
3329Interchangeable
interchangeable cross-reference
interchangeable
CS6-50Interchangeable
interchangeable cross-reference
interchangeable
21-613Interchangeable
interchangeable cross-reference
interchangeable
9000742Interchangeable
interchangeable cross-reference
interchangeable
058146Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L4287?
L4287 is a CUP,TAPERED ROLLER BEARING.
What parts can replace L4287?
There are 19 known substitutes for L4287: 799167, 3329, CS6-50 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for L4287?
L4287 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0371. 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