Spiral bevel high ratio 7/37
grabcad
This spiral bevel set has high ratio. 7/36 ratio is normal for hypoid gears, not spiral bevel. The key element of this set is the 7 teeth pinion. Gear textbook often says that the minimum number of teeth is 17 for 20 degree pressure angle and may be 12 for 30 degree pressure angle. Higher spiral angle allows to reduce the minimum number of teeth.
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