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The centre distance between two meshing gears is 250 mm and the angle between the shafts is 60°. The normal circular pitch is 10 mm and the gear ratio is 2. Ψ1 = 35°. Find the exact centre distance.

The centre distance between two meshing gears is 250 mm and the angle between the shafts is 60°. The normal circular pitch is 10 mm and the gear ratio is 2. Ψ1 = 35°. Find the exact centre distance. Correct Answer 250.934 mm

Ψ1 = 35°, Ψ2 = 60° – 35° = 25°, pn = 10 mm We found out that T1 = 46 and T2 = 92. Centre distance = (pn/2π) ((T1/cos Ψ1) + (T2/cos Ψ2)) = 250.934 mm.

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