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Technical Data Sheet
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B40489 — Technical Data Sheet

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— · 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,AIRFRAME is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 1.5625 INCHES MINIMUM AND 1.5628 INCHES MAXIMUM IN, load_direction: RADIAL, inner_ring_width: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN, outer_ring_width: 0.2500 INCHES NOMINAL IN, style_designator: SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 3110-00-198-2959, 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
B40489
NSN: 3110-00-198-2959
FSC: 3110
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter1.5625 INCHES MINIMUM AND 1.5628 INCHES MAXIMUM IN
load_directionRADIAL
inner_ring_width0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
outer_ring_width0.2500 INCHES NOMINAL IN
style_designatorSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
lubrication_materialGREASE
overall_outside_diameter1.9990 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN
lubrication_material_document_and_classificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
NSN3110-00-198-2959
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: B40489 · 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
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
•
INNER RING WIDTH: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
•
LUBRICATION MATERIAL: GREASE
•
LOAD DIRECTION: RADIAL
•
OUTER RING WIDTH: 0.2500 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
BORE DIAMETER: 1.5625 INCHES MINIMUM AND 1.5628 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
TECHNICAL CHARACTERISTICS
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
INNER RING WIDTH0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
LUBRICATION MATERIALGREASE
LOAD DIRECTIONRADIAL
OUTER RING WIDTH0.2500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
BORE DIAMETER1.5625 INCHES MINIMUM AND 1.5628 INCHES MAXIMUM IN
STYLE DESIGNATORSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
OVERALL OUTSIDE DIAMETER1.9990 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
A40489InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
40489InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
QQA200-11InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
120067InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
60-1073 PIECE 654InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
40489-SVInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B40489?
B40489 is a BEARING,BALL,AIRFRAME.
What parts can replace B40489?
There are 6 known substitutes for B40489: A40489, 40489, QQA200-11 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B40489?
B40489 is cataloged in the Federal Logistics Information System under NSN 3110-00-198-2959. 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.
PartsTable Design LLC · partstable.com
Last verified: September 2026