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1903S-11-ST — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

1903S-11-ST: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 OVERALL, bore_shape: STRAIGHT, bore_diameter: 0.6691 INCHES MINIMUM AND 0.6693 INCHES MAXIMUM IN, overall_width: 0.2676 INCHES MINIMUM AND 0.2726 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-301-7665, 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
1903S-11-ST
NSN: 3110-01-301-7665
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 OVERALL
bore_shapeSTRAIGHT
bore_diameter0.6691 INCHES MINIMUM AND 0.6693 INCHES MAXIMUM IN
overall_width0.2676 INCHES MINIMUM AND 0.2726 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
special_featuresBEARING GRADE IS ABEC 5; ITEM IS USED ON THE F107WR101 ENGINE
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0007 INCHES MINIMUM RADIAL AND 0.0013 INCHES MAXIMUM RADIAL IN
overall_outside_diameter1.1808 INCHES MINIMUM AND 1.1811 INCHES MAXIMUM IN
material_document_and_classificationAMS 6440 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN3110-01-301-7665
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1903S-11-ST · 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
•
INTERNAL CLEARANCE: 0.0007 INCHES MINIMUM RADIAL AND 0.0013 INCHES MAXIMUM RADIAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6440 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OVERALL OUTSIDE DIAMETER: 1.1808 INCHES MINIMUM AND 1.1811 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS
INTERNAL CLEARANCE0.0007 INCHES MINIMUM RADIAL AND 0.0013 INCHES MAXIMUM RADIAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6440 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL WIDTH0.2676 INCHES MINIMUM AND 0.2726 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER1.1808 INCHES MINIMUM AND 1.1811 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
SPECIAL FEATURESBEARING GRADE IS ABEC 5; ITEM IS USED ON THE F107WR101 ENGINE
BORE DIAMETER0.6691 INCHES MINIMUM AND 0.6693 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 6
46738Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
27099Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
23410Reference document
Same NSN cross-reference
Reference document — Secondary reference
554195Reference document
Same NSN cross-reference
Reference document — Secondary reference
46741Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
39161Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1903S-11-ST?
1903S-11-ST is a BEARING,BALL,ANNULAR.
What parts can replace 1903S-11-ST?
There are 6 known substitutes for 1903S-11-ST: 46738, 27099, 23410 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1903S-11-ST?
1903S-11-ST is cataloged in the U.S. Government catalog under NSN 3110-01-301-7665. 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.