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A0540WB18 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

A0540WB18: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP E51100 INNER RING, bore_shape: STRAIGHT, bore_diameter: 4.9209 INCHES MINIMUM AND 4.9213 INCHES MAXIMUM IN, overall_width: 1.4077 INCHES MINIMUM AND 1.4097 INCHES MAXIMUM IN, surface_finish: GROUND, locating_feature: NONLOCATING. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-078-5676, 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
A0540WB18
NSN: 3110-00-078-5676
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 43334 — GENERAL MOTORS CORP DELCO MORAINE NDH DIV (USA)
SPECIFICATIONS
materialSTEEL COMP E51100 INNER RING
bore_shapeSTRAIGHT
bore_diameter4.9209 INCHES MINIMUM AND 4.9213 INCHES MAXIMUM IN
overall_width1.4077 INCHES MINIMUM AND 1.4097 INCHES MAXIMUM IN
surface_finishGROUND
locating_featureNONLOCATING
special_featuresSEPARATOR TO BE SILVER PLATED PER AMS 2412,0.0005-0.0015
style_designatorSINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, TWO LIP OUTER RING, SEPARABLE
surface_treatmentOXIDE INNER RING
internal_clearance0.0015 INCHES MINIMUM RADIAL AND 0.0031 INCHES MAXIMUM RADIAL IN
overall_outside_diameter8.2675 INCHES MINIMUM AND 8.2680 INCHES MAXIMUM IN
standard_tolerance_designationRBEC NO.5
NSN3110-00-078-5676
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A0540WB18 · 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: 0.0015 INCHES MINIMUM RADIAL AND 0.0031 INCHES MAXIMUM RADIAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE INNER RING
•
LOCATING FEATURE: NONLOCATING
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, TWO LIP OUTER RING, SEPARABLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4616 ASSN STD SINGLE MATERIAL RESPONSE SEPARATOR
TECHNICAL CHARACTERISTICS
INTERNAL CLEARANCE0.0015 INCHES MINIMUM RADIAL AND 0.0031 INCHES MAXIMUM RADIAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2485 ASSN STD SINGLE TREATMENT RESPONSE INNER RING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OUTER RING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2485 ASSN STD SINGLE TREATMENT RESPONSE ROLLER
LOCATING FEATURENONLOCATING
SURFACE FINISHGROUND
STYLE DESIGNATORSINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, TWO LIP OUTER RING, SEPARABLE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4616 ASSN STD SINGLE MATERIAL RESPONSE SEPARATOR
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6276 ASSN STD SINGLE MATERIAL RESPONSE ROLLER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6445 ASSN STD SINGLE MATERIAL RESPONSE INNER RING
SUBSTITUTES & CROSS-REFERENCES 6
458777-6845296Reference document
Same NSN cross-reference
Reference document — Secondary reference
23066782Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6829357Reference document
Same NSN cross-reference
Reference document — Secondary reference
23064143Reference document
Same NSN cross-reference
Reference document — Secondary reference
6829354Reference document
Same NSN cross-reference
Reference document — Secondary reference
TPUSS125-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A0540WB18?
A0540WB18 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace A0540WB18?
There are 6 known substitutes for A0540WB18: 458777-6845296, 23066782, 6829357 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A0540WB18?
A0540WB18 is cataloged in the U.S. Government catalog under NSN 3110-00-078-5676. This indicates validated use in U.S. government and defense supply chains.
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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.