– ISO 9409: Part II talks about the look of the output shafts of these geared motors according to different specs.
– DIN ISO 281: With all the current guidelines that helps to produce a correct 
calculation of the bearings.
– ISO 6636 for gears.
What regulations apply to planetary gearboxes?
Keep in mind that each producer sets its own steps when presenting the operating period of your gears or the utmost torque they could bear. Nevertheless, we are able to find certain regulations governing these parameters.
What are the main advantages of planetary gear motors?
Increased repeatability: Its greater speed radial and axial load offers reliability and robustness, minimizing the misalignment of the apparatus. In addition, uniform tranny and low vibrations at different loads give a perfect repeatability.
Perfect precision: Most rotating angular stability enhances the accuracy and reliability of the movement.
Lower noise level because there is more surface contact. Rolling is much softer and jumps are practically nonexistent.
Greater durability: Due to its torsional rigidity and better rolling. To improve this feature, your bearings help reduce the losses that could happen by rubbing the shaft on the box directly. Thus, greater effectiveness of the apparatus and a much smoother operation is achieved.
Very good degrees of efficiency: Planetary reducers offer greater efficiency and thanks to its design and internal layout losses are minimized throughout their work. Actually, today, this kind of drive mechanisms are those that offer greater efficiency.
Increased torque transmission: With more teeth Planetary Gear Unit connected, the mechanism is able to transmit and withstand more torque. Furthermore, it does it in a more uniform manner.
Maximum versatility: The mechanism is within a cylindrical gearbox, which may be installed in nearly every space.