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MDW4K-400 — BEARING,BALL,AIRFRAME

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

MDW4K-400: BEARING,BALL,AIRFRAME.

The BEARING,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE SEAL, bore_diameter: 0.2497 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN, load_direction: ANGULAR, inner_ring_width: 0.8725 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN, outer_ring_width: 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN, special_features: 80 PCT FULL SPECIFIED LUBRICANT; OUTWARD CONVERGENT ANGLE. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-265-0576, 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
MDW4K-400
NSN: 3110-01-265-0576
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE SEAL
bore_diameter0.2497 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
seal_quantity2
load_directionANGULAR
inner_ring_width0.8725 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
outer_ring_width0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
special_features80 PCT FULL SPECIFIED LUBRICANT; OUTWARD CONVERGENT ANGLE
style_designatorDOUBLE ROW
bearing_seal_typeCONTACT
surface_treatmentCADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
internal_clearance0.0005 INCHES MAXIMUM RADIAL IN
lubrication_materialGREASE
NSN3110-01-265-0576
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MDW4K-400 · 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
•
RETAINER FABRICATION METHOD: PRESSED
•
BEARING SEAL TYPE: CONTACT
•
LUBRICATION MATERIAL: GREASE
•
OUTER RING WIDTH: 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
•
INTERNAL CLEARANCE: 0.0005 INCHES MAXIMUM RADIAL IN
•
STYLE DESIGNATOR: DOUBLE ROW
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3666 ASSN STD SINGLE MATERIAL RESPONSE SEAL
•
OVERALL OUTSIDE DIAMETER: 0.7496 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
BEARING SEAL TYPECONTACT
LUBRICATION MATERIALGREASE
OUTER RING WIDTH0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
INTERNAL CLEARANCE0.0005 INCHES MAXIMUM RADIAL IN
STYLE DESIGNATORDOUBLE ROW
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3666 ASSN STD SINGLE MATERIAL RESPONSE SEAL
OVERALL OUTSIDE DIAMETER0.7496 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
LOAD DIRECTIONANGULAR
SPECIAL FEATURES80 PCT FULL SPECIFIED LUBRICANT; OUTWARD CONVERGENT ANGLE
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is MDW4K-400?
MDW4K-400 is a BEARING,BALL,AIRFRAME.
What is the NSN for MDW4K-400?
MDW4K-400 is cataloged in the U.S. Government catalog under NSN 3110-01-265-0576. 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.