What are the important parameters of planetary gear motors
Planetary reduction motors are applied in the field of high torque, with the advantages of high efficiency, high precision, and large torque. Primary and secondary reduction are common in reducers that require large transmission ratios, requiring a two-stage planetary reduction motor. The two-stage planetary reduction motor will increase the number and length of planetary gears, and its efficiency will be lower than that of the first stage planetary reduction motor. Secondly, the motor electrical components briefly introduce the parameters of the two-stage planetary reduction motor:

1. Reduction ratio: a commonly used parameter for reduction motors, referring to the ratio of the input speed of the DC motor to the output speed of the reduction motor;

Level 2: The more planetary gear stages there are, the lower the speed, the greater the torque, and the relatively lower the efficiency;

3. Service life: refers to the continuous working time of the planetary reduction motor under rated load or no-load conditions;

4 Rated torque: A standard for planetary gear motors. For example, when the output speed is lower than the standard value of 100RPM, the service life of the planetary gear motor is the average service life. If the output torque exceeds twice this value, the average service life of the reducer will decrease and the decelerator will fail;

5 Noise: Measure the noise value in dB at rated voltage, speed, no-load, and 1 meter away from the planetary gearbox. The noise level of the micro planetary gearbox motor is less than 40dB;

6-way clearance: When the output end is fixed and the rated torque generated at the output end is ± 2% of the torque when the input end rotates clockwise or counterclockwise, there will be a small angular displacement at the input end of the reducer, known as the return clearance, in arc minutes, which is 1/60 of 1 °. Usually, it can be seen that the diameter of the secondary planetary reducer is 3-30mm, the reduction ratio is 5-1500, and the return clearance is within 2 arcs and 2 minutes
 

The reduction ratio range of planetary gearbox motor: The commonly used reduction ratio for the first stage planetary gearbox motor is 3/4/5/7/10, and the commonly used reduction ratio for the second stage planetary gearbox is 12/20/30/35/40/50/70/90/100

Application areas of secondary planetary gear motors: smart homes, automotive transmissions, robot transmissions, office equipment, electronic products, warehousing and logistics equipment, etc

The Golden Rule of Selection (Avoiding Pits Guide)

Torque trap:

Rated torque ≠ Peak torque! Continuous overload of 90% reduces the rated life by 50%

Formula: Safe torque=Load torque x 1.5 (safety factor)

Error in accuracy:

The nominal hysteresis is 1arcmin → the actual system hysteresis may reach 3arcmin (including coupling error)

Temperature blind zone:

-At 10 ℃, the viscosity of the lubricating grease increases ↑ → the starting torque increases by 300% (low-temperature grease is required in cold regions)