... planetary gear motor 1) Dimensions of device:22mm,32mm,42mm,52mm,62mm, 72mm,81mm,105mm 2) Gear ratio:i=3~512 32mm planetary gear ... specialized in mini AC gear motors. At present, our main products are: gear motors, three phase motors, speed control motors, brake motors, ... technical terms of small gear motor> in 2010;ZD developed China's first high-precision helical planetary gear reducer in 2011; ...