– ISO 9409: Component II talks about the design of the output shafts of the geared motors according to different specifications.
– DIN ISO 281: With all the current 
rules that helps to create a correct calculation of the bearings.
– ISO 6636 for gears.
What regulations apply to planetary gearboxes?
Remember that each manufacturer sets its own procedures when presenting the operating time of your gears or the utmost torque they could bear. Nevertheless, we can find certain regulations governing these parameters.
What are the primary advantages of planetary gear motors?
Increased repeatability: Its greater speed radial and axial load offers reliability and robustness, minimizing the misalignment of the gear. In addition, uniform tranny and low vibrations at different loads give a perfect repeatability.
Ideal precision: Most rotating angular stability boosts the accuracy and reliability of the motion.
Lower noise level because there is more surface contact. Rolling is a lot softer and jumps are practically nonexistent.
Greater durability: Due to its torsional rigidity and better rolling. To improve this feature, your bearings lessen the Planetary Gear Unit losses that could happen by rubbing the shaft on the package directly. Thus, greater performance of the gear and a much smoother operation is achieved.
Very good degrees of efficiency: Planetary reducers provide greater efficiency and thanks to its design and internal layout losses are minimized throughout their work. Actually, today, this type of drive mechanisms are those that provide greater efficiency.
Improved torque transmission: With an increase of teeth connected, the mechanism will be able to transmit and withstand more torque. Furthermore, it does it in a more uniform manner.
Maximum versatility: The mechanism is contained in a cylindrical gearbox, which may be installed in almost any space.