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311D644P3 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

311D644P3: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP E51100 OR STEEL COMP E50100 OR STEEL COMP E52100 BALL, bore_shape: STRAIGHT, bore_diameter: 0.7872 INCHES MINIMUM AND 0.7874 INCHES MAXIMUM IN, overall_width: 0.3493 INCHES MINIMUM AND 0.3543 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-006-9867, 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
311D644P3
NSN: 3110-01-006-9867
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP E51100 OR STEEL COMP E50100 OR STEEL COMP E52100 BALL
bore_shapeSTRAIGHT
bore_diameter0.7872 INCHES MINIMUM AND 0.7874 INCHES MAXIMUM IN
overall_width0.3493 INCHES MINIMUM AND 0.3543 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0008 INCHES MINIMUM RADIAL AND 0.0014 INCHES MAXIMUM RADIAL IN
overall_outside_diameter1.4564 INCHES MINIMUM AND 1.4567 INCHES MAXIMUM IN
retainer_fabrication_methodMACHINED
standard_tolerance_designationABEC NO.3
material_document_and_classificationAMS 6441 ASSN STD SINGLE MATERIAL RESPONSE OUTER RING
NSN3110-01-006-9867
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 311D644P3 · 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: MACHINED
•
INTERNAL CLEARANCE: 0.0008 INCHES MINIMUM RADIAL AND 0.0014 INCHES MAXIMUM RADIAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6441 ASSN STD SINGLE MATERIAL RESPONSE OUTER RING
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODMACHINED
INTERNAL CLEARANCE0.0008 INCHES MINIMUM RADIAL AND 0.0014 INCHES MAXIMUM RADIAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6441 ASSN STD SINGLE MATERIAL RESPONSE OUTER RING
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6440 ASSN STD SINGLE MATERIAL RESPONSE INNER RING
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 7440 ASSN STD ALL MATERIAL RESPONSES BALL
OVERALL WIDTH0.3493 INCHES MINIMUM AND 0.3543 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER1.4564 INCHES MINIMUM AND 1.4567 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
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 1
M9304KMBRE8683AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 311D644P3?
311D644P3 is a BEARING,BALL,ANNULAR.
What parts can replace 311D644P3?
There is 1 known substitute for 311D644P3: M9304KMBRE8683A. Substitute compatibility should be verified for your specific system.
What is the NSN for 311D644P3?
311D644P3 is cataloged in the U.S. Government catalog under NSN 3110-01-006-9867. This indicates validated use in U.S. government and defense supply chains.
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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.