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Find the maximum value of addendum radius of the larger gear if the pressure angle between two teeth is equal to 25°. T = 50 and t = 25. The gears have a module of 8 mm and the addendum is equal to one module.

Find the maximum value of addendum radius of the larger gear if the pressure angle between two teeth is equal to 25°. T = 50 and t = 25. The gears have a module of 8 mm and the addendum is equal to one module. Correct Answer 221. 202 mm

Giveφ = 25°, T = 50 and t = 25, m = 8 mm and addendum = 1 module = 8 mm R = mT/2 = 200 and r = mt/2 = 100 Ra = 200 + 8 = 208 mm. Ra max = ((R cosφ)2 + (R sinφ + r sinφ)2)0.5 = 221. 202 mm.

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