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SB1143-101 — BEARING,BALL,DUPLEX

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

SB1143-101: BEARING,BALL,DUPLEX.

The BEARING,BALL,DUPLEX is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440C BALL, bore_diameter: 1.9682 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM IN, overall_width: 1.2398 INCHES MINIMUM AND 1.2598 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND, style_designator: COUNTERBORED OUTER RINGS, NON-SEPARABLE, UNIVERSAL GROUND FACES. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-172-3345, 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
SB1143-101
NSN: 3110-01-172-3345
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 440C BALL
bore_diameter1.9682 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM IN
overall_width1.2398 INCHES MINIMUM AND 1.2598 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
style_designatorCOUNTERBORED OUTER RINGS, NON-SEPARABLE, UNIVERSAL GROUND FACES
internal_clearance0.0012 INCHES MINIMUM RADIAL AND 0.0020 INCHES MAXIMUM RADIAL IN
overall_outside_diameter3.1492 INCHES MINIMUM AND 3.1496 INCHES MAXIMUM IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationAFBMA CLASS 3
lubrication_material_document_and_classificationMIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
NSN3110-01-172-3345
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: SB1143-101 · 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 CLEARANCE: 0.0012 INCHES MINIMUM RADIAL AND 0.0020 INCHES MAXIMUM RADIAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: COUNTERBORED OUTER RINGS, NON-SEPARABLE, UNIVERSAL GROUND FACES
•
OVERALL OUTSIDE DIAMETER: 3.1492 INCHES MINIMUM AND 3.1496 INCHES MAXIMUM IN
•
LOAD DIRECTION: RADIAL
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 3
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
INTERNAL CLEARANCE0.0012 INCHES MINIMUM RADIAL AND 0.0020 INCHES MAXIMUM RADIAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORCOUNTERBORED OUTER RINGS, NON-SEPARABLE, UNIVERSAL GROUND FACES
OVERALL WIDTH1.2398 INCHES MINIMUM AND 1.2598 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER3.1492 INCHES MINIMUM AND 3.1496 INCHES MAXIMUM IN
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 3
BORE DIAMETER1.9682 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM IN
MATERIALSTEEL COMP 440C INNER RING
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 3
AM9110PVMDBA2980Reference document
Same NSN cross-reference
Reference document — Secondary reference
SB1143Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AM9110PVM-104Reference 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 SB1143-101?
SB1143-101 is a BEARING,BALL,DUPLEX.
What parts can replace SB1143-101?
There are 3 known substitutes for SB1143-101: AM9110PVMDBA2980, SB1143, AM9110PVM-104. Substitute compatibility should be verified for your specific system.
What is the NSN for SB1143-101?
SB1143-101 is cataloged in the U.S. Government catalog under NSN 3110-01-172-3345. 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.