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Compound planetary gears (Wolfrom)
Wolfrom gears are highly recommended for higher transmission ratios:
They carry their own challenges especially to the fulfillment of the installation conditions and it is never easy to find the right constellation of number of teeth. Maul Konstruktionen developed tools to find the right
constellation for your application.
Wolfrom gears have similar advantages as planetary gears:
I. Good load distribution by many planetary wheels
II. Equably distributed force polygons
III. Centering of the sun wheel and the hollow wheel by the planetary forces
The decision on which wheel the teeth are eloped has to be chosen for each application. The following example has dissimilar hollow wheels, eloping planetary wheels and an eloping sun wheel.