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4056-21 — CONE AND ROLLERS,TAPERED ROLLER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

4056-21: CONE AND ROLLERS,TAPERED ROLLER.

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include special_features: SEAT FOR CHECK VALVE PISTON P/N 212490, seating_surface_shape: RADIAL, end_item_identification: CHECK VALVE ASSY 406376. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-3590, 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
4056-21
NSN: 3110-00-100-3590
NIINs: 001003590, 001449004, 005314246
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 18745 — ALLIS-CHALMERS CORP IMPLEMENT DIV (USA)
SPECIFICATIONS
special_featuresSEAT FOR CHECK VALVE PISTON P/N 212490
seating_surface_shapeRADIAL
end_item_identificationCHECK VALVE ASSY 406376
NSN3110-00-100-3590
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 4056-21 · 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: STEEP ANGLE
•
CONE CORNER RADIUS: 0.1875 INCHES NOMINAL IN
•
CONE WIDTH: 0.9550 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 1.1250 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
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
STYLE DESIGNATORSTEEP ANGLE
CONE CORNER RADIUS0.1875 INCHES NOMINAL IN
CONE WIDTH0.9550 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER1.1250 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
144506Reference document
Same NSN cross-reference
Reference document — Secondary reference
A218259Reference document
Same NSN cross-reference
Reference document — Secondary reference
4ZDK0138Reference document
Same NSN cross-reference
Reference document — Secondary reference
568463Reference document
Same NSN cross-reference
Reference document — Secondary reference
92666Reference document
Same NSN cross-reference
Reference document — Secondary reference
41125Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4056-21?
4056-21 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 4056-21?
There are 8 known substitutes for 4056-21: 144506, A218259, 4ZDK0138 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4056-21?
4056-21 is cataloged in the U.S. Government catalog under NSN 3110-00-100-3590. 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.