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A540 — BEARING,BALL,AIRFRAME

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

A540: BEARING,BALL,AIRFRAME.

The BEARING,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include special_features: TERMINAL BOARD 1; CHOKE COIL 2; RESISTOR 4; CAPACITOR 1; RELAY 4; CIRCUIT BREAKER 2; THYRISTOR 1. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-142-4329, 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
MRO→ MRO_GENERAL→ A540
NSN: 3110-00-142-4329
NIINs: 001424329, 001637621, 002329039, 002821884, 002939588, 012127143
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 21760 — SCHATZ BEARING CORPORATION DBA SCHATZ BEARING CORP (USA)
SPECIFICATIONS
special_featuresTERMINAL BOARD 1; CHOKE COIL 2; RESISTOR 4; CAPACITOR 1; RELAY 4; CIRCUIT BREAKER 2; THYRISTOR 1
NSN3110-00-142-4329
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A540 · 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
•
OUTER RING WIDTH: 0.2500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
•
OVERALL OUTSIDE DIAMETER: 1.3125 INCHES NOMINAL IN
•
LOAD DIRECTION: RADIAL
•
BORE DIAMETER: 0.8750 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
•
INNER RING WIDTH: 0.2810 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTER RING WIDTH0.2500 INCHES NOMINAL IN
STYLE DESIGNATORSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
OVERALL OUTSIDE DIAMETER1.3125 INCHES NOMINAL IN
LOAD DIRECTIONRADIAL
BORE DIAMETER0.8750 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
INNER RING WIDTH0.2810 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
A540FS160Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
176002Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A540?
A540 is a BEARING,BALL,AIRFRAME. It is classified as a MRO (MRO_GENERAL).
What parts can replace A540?
There are 2 known substitutes for A540: A540FS160, 176002. Substitute compatibility should be verified for your specific system.
What is the NSN for A540?
A540 is cataloged in the U.S. Government catalog under NSN 3110-00-142-4329. 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.