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L6311 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

L6311: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include height: 2.500 INCHES NOMINAL IN, material: STEEL OVERALL, bore_shape: STRAIGHT, thread_size: 0.625 ALL THREADED PORTIONS, flange_width: 4.875 INCHES NOMINAL IN, bore_diameter: 55.00 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-540-4685, 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
L6311
NSN: 3110-00-540-4685
NIINs: 005404685, 005976584
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
height2.500 INCHES NOMINAL IN
materialSTEEL OVERALL
bore_shapeSTRAIGHT
thread_size0.625 ALL THREADED PORTIONS
flange_width4.875 INCHES NOMINAL IN
bore_diameter55.00 MILLIMETERS NOMINAL MM
flange_length7.000 INCHES NOMINAL IN
overall_width43.0 MILLIMETERS NOMINAL MM
load_directionANGULAR
surface_finishGROUND
flange_thickness0.156 INCHES NOMINAL IN
style_designatorNON-SEPARABLE
NSN3110-00-540-4685
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: L6311 · 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
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 120.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: ANGULAR
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORNON-SEPARABLE
OVERALL WIDTH43.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER120.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
LOAD DIRECTIONANGULAR
INTERNAL FIT-UP CONTACT ANGULAR DIRECTIONINWARD CONVERGENT
STANDARD TOLERANCE DESIGNATIONABEC NO.1
SUBSTITUTES & CROSS-REFERENCES 1
2311Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is L6311?
L6311 is a BEARING,BALL,ANNULAR.
What parts can replace L6311?
There is 1 known substitute for L6311: 2311. Substitute compatibility should be verified for your specific system.
What is the NSN for L6311?
L6311 is cataloged in the U.S. Government catalog under NSN 3110-00-540-4685. 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.