Gear Noise

Gear whine - Generated by meshing gears due to the vibration causedby failure of the rolling action between the mating teeth due toMinute imperfections in manufacture ofTooth pitch circle (radius and centre)Tooth involute formGear shaftGear shaft bearing positionGear tooth finishTooth helix angles (relative)Radii at tooth tip and rootSmall design e...
Found on http://www.diracdelta.co.uk/science/source/g/e/gear%20noise/source.html
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