Spiral
bevel gearing is much the same as helical gearing due to the designing
of the teeth, so that the engagement along the length of the tooth
is gradual and they can also be used in place of straight cut bevels.
As the teeth
overlap and give a continuous pitch line contact with more teeth
in mesh at any one time, the load is transmitted without shock or
sudden impact loadings on the teeth which gives rise to noise and
vibration.
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Spiral
bevel gearing is much the same as helical gearing due to the designing
of the teeth, so that the engagement along the length of the tooth
is gradual and they can also be used in place of straight cut bevels.