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A 2.5 teeth/in diametral pitch 17‐tooth pinion and 50 tooth gear are paired. The gears are...

A 2.5 teeth/in diametral pitch 17‐tooth pinion and 50 tooth gear are paired. The gears are cut on the 20 degrees ̊full‐depth involute system. Find the contact ratio.

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Answer #1

For standard gear addendum is equal to one module.

Contact ratio = (Arc of contact)/ ( circular pitch)

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