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Tangential tooth load on spur gear.

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A spur gear has 48 teeth with a diametral pitch of 8 and a pressure angle of 20 deg. The face width is 0.75 inches. If the gear is transmitting 25 HP at 250 rpm, what is the tangential force?

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This solution contains detailed and yet simple step-by-step information on calculating the tangential tooth load of a spur gear based on the power transmitted.

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The design tangential tooth load is obtained from the power transmitted and the pitch line velocity by using the following relation;
WT = (P/v)Cs..........................................................................................(1)
where WT= Permissible tangential tooth load (N)
P =Power transmitted (watts)
v= Pitch line velocity (m/s) = 3.14 ...

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