Double
helical gears give the same advantages and smoothness as single
helical gears, but with the added value of a much greater strength
in the contact of the teeth and no side ways force.
They can replace
spur gears without alteration to the end thrust bearings.
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Double
helical gears give the same advantages and smoothness as single
helical gears, but with the added value of a much greater strength
in the contact of the teeth and no side ways force.