Cycloidal gearboxes
Cycloidal gearboxes or reducers consist of four simple components: a high-speed input shaft, a single or compound cycloidal cam, cam followers or rollers, and a slow-speed output shaft. The insight shaft attaches to an eccentric drive member that induces eccentric rotation of the cycloidal cam. In compound reducers, the first tabs on the cycloidal cam lobes engages cam supporters in the housing. Cylindrical cam followers become teeth on the internal gear, and the amount of cam fans exceeds the number of cam lobes. The second track of substance cam lobes engages with cam followers on the output shaft and transforms the cam’s eccentric rotation into concentric rotation of the output shaft, thus increasing torque and reducing swiftness.
Compound cycloidal gearboxes offer ratios ranging from only 10:1 to 300:1 without stacking phases, as in standard planetary gearboxes. The gearbox’s compound decrease and may be calculated using:
where nhsg = the number of followers or rollers in the fixed housing and nops = the number for followers or rollers in the slower acceleration output shaft (flange).
There are many commercial variations of cycloidal reducers. And unlike planetary gearboxes where variations derive from gear geometry, heat therapy, and finishing processes, cycloidal variations share basic design principles but generate cycloidal movement in different ways.
Planetary gearboxes
Planetary gearboxes are made of three basic force-transmitting elements: a sun gear, three or more satellite or 
planet gears, and an interior ring gear. In a typical gearbox, the sun gear attaches to the insight shaft, which is connected to the servomotor. The sun gear transmits electric motor rotation to the satellites which, in turn, rotate within the stationary ring equipment. The ring equipment is area of the Cycloidal gearbox gearbox housing. Satellite gears rotate on rigid shafts connected to the planet carrier and cause the planet carrier to rotate and, thus, turn the output shaft. The gearbox provides result shaft higher torque and lower rpm.