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Internal Spur gear

Internal Spur gear

grabcad

Internal gears have their teeth on the inside diameter of the blank, making them typically stronger and more efficient than the matching pinion gear. The pitch diameter of an internal gear should be at least 1.5 times that of its mating pinion to prevent tooth tip interference. Pitch options range from 32 to 120 DP and 1.5 to .25 MOD, with materials including aluminum and stainless steel.

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