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Technical Data Sheet
PartsTable / COMPONENT / 4056-21
4056-21 ✓ 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

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 Federal Logistics Information System (FLIS) 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
FSC: 3110
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
•
CONE WIDTH: 0.9550 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1875 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: STEEP ANGLE
•
BORE DIAMETER: 1.1250 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)
CONE WIDTH0.9550 INCHES NOMINAL IN
CONE CORNER RADIUS0.1875 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
STYLE DESIGNATORSTEEP ANGLE
BORE DIAMETER1.1250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
1273Interchangeable
interchangeable cross-reference
interchangeable
52430Interchangeable
interchangeable cross-reference
interchangeable
20BC02PInterchangeable
interchangeable cross-reference
interchangeable
C12162Interchangeable
interchangeable cross-reference
interchangeable
1302Interchangeable
interchangeable cross-reference
interchangeable
940 25/64Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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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 24 known substitutes for 4056-21: 1273, 52430, 20BC02P and 21 more. Substitute compatibility should be verified for your specific system.
Is 4056-21 still available?
4056-21 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026