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PartsTable / COMPONENT / 1311W
1311W ✓ 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

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL INNER RING, bore_shape: STRAIGHT, bore_diameter: 55.00 MILLIMETERS NOMINAL MM, load_direction: RADIAL, surface_finish: GROUND, inner_ring_width: 1.9375 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-9561, 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
1311W
NSN: 3110-00-155-9561
FSC: 3110
CAGE: 0LTL1 — NTN BEARING CORPORATION OF AMERICA (USA)
SPECIFICATIONS
materialSTEEL INNER RING
bore_shapeSTRAIGHT
bore_diameter55.00 MILLIMETERS NOMINAL MM
load_directionRADIAL
surface_finishGROUND
inner_ring_width1.9375 INCHES NOMINAL IN
outer_ring_width29.00 MILLIMETERS NOMINAL MM
style_designatorLOADING GROOVE, NON-SEPARABLE
overall_outside_diameter120.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
standard_tolerance_designationABEC NO.1
NSN3110-00-155-9561
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1311W · 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
•
BORE SHAPE: STRAIGHT
•
INNER RING WIDTH: 1.9375 INCHES NOMINAL IN
•
MATERIAL: STEEL OUTER RING
•
STYLE DESIGNATOR: LOADING GROOVE, NON-SEPARABLE
•
OUTER RING WIDTH: 29.00 MILLIMETERS NOMINAL MM
•
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
BORE SHAPESTRAIGHT
INNER RING WIDTH1.9375 INCHES NOMINAL IN
MATERIALSTEEL OUTER RING
STYLE DESIGNATORLOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL INNER RING
MATERIALSTEEL BALL
OUTER RING WIDTH29.00 MILLIMETERS NOMINAL MM
SURFACE FINISHGROUND
INTERNAL FIT-UP DESIGNATIONSTANDARD
OVERALL OUTSIDE DIAMETER120.00 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
1227TInterchangeable
interchangeable cross-reference
interchangeable
1227T4311Interchangeable
interchangeable cross-reference
interchangeable
M0DEL1227T0-50UADCInterchangeable
interchangeable cross-reference
interchangeable
A-A-52491Interchangeable
interchangeable cross-reference
interchangeable
709691Interchangeable
interchangeable cross-reference
interchangeable
011Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1311W?
1311W is a BEARING,BALL,ANNULAR.
What parts can replace 1311W?
There are 30 known substitutes for 1311W: 1227T, 1227T4311, M0DEL1227T0-50UADC and 27 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1311W?
1311W is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-9561. This indicates validated use in U.S. government and defense supply chains.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026