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311D660P2 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

311D660P2: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 INNER RING, bore_shape: STRAIGHT, bore_diameter: 1.5746 INCHES MINIMUM AND 1.5748 INCHES MAXIMUM IN, overall_width: 0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN, surface_finish: GROUND, locating_feature: NONLOCATING. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-571-9413, 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
311D660P2
NSN: 3110-00-571-9413
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 52676 — SKF USA INC. (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 INNER RING
bore_shapeSTRAIGHT
bore_diameter1.5746 INCHES MINIMUM AND 1.5748 INCHES MAXIMUM IN
overall_width0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN
surface_finishGROUND
locating_featureNONLOCATING
special_featuresBEARING HEAT STABLIZED FOR OPERATION AT 400 DEG F,INNER RING W/RETAINER AND ROLLERS,AND OUTER RING FURNISHED AS A MATCHED SET DEGF
style_designatorSINGLE ROW, NON-LOCATING, TWO LIP INNER RING, CYLINDRICAL OUTER RING, SEPARABLE
internal_clearance0.0008 INCHES MINIMUM RADIAL AND 0.0020 INCHES MAXIMUM RADIAL IN
overall_outside_diameter3.0997 INCHES MINIMUM AND 3.1000 INCHES MAXIMUM IN
retainer_fabrication_methodMACHINED
standard_tolerance_designationRBEC NO.5
NSN3110-00-571-9413
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 311D660P2 · 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 0.0020 INCHES MAXIMUM RADIAL IN
•
LOCATING FEATURE: NONLOCATING
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SINGLE ROW, NON-LOCATING, TWO LIP INNER RING, CYLINDRICAL OUTER RING, SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 3.0997 INCHES MINIMUM AND 3.1000 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODMACHINED
INTERNAL CLEARANCE0.0008 INCHES MINIMUM RADIAL AND 0.0020 INCHES MAXIMUM RADIAL IN
LOCATING FEATURENONLOCATING
SURFACE FINISHGROUND
STYLE DESIGNATORSINGLE ROW, NON-LOCATING, TWO LIP INNER RING, CYLINDRICAL OUTER RING, SEPARABLE
OVERALL WIDTH0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER3.0997 INCHES MINIMUM AND 3.1000 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
SPECIAL FEATURESBEARING HEAT STABLIZED FOR OPERATION AT 400 DEG F,INNER RING W/RETAINER AND ROLLERS,AND OUTER RING FURNISHED AS A MATCHED SET DEGF
STANDARD TOLERANCE DESIGNATIONRBEC NO.5
SUBSTITUTES & CROSS-REFERENCES 2
458863Reference document
Same NSN cross-reference
Reference document — Secondary reference
R208C102Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 311D660P2?
311D660P2 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace 311D660P2?
There are 2 known substitutes for 311D660P2: 458863, R208C102. Substitute compatibility should be verified for your specific system.
What is the NSN for 311D660P2?
311D660P2 is cataloged in the U.S. Government catalog under NSN 3110-00-571-9413. 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.