1: the noise below 65 db

2: the input speed is 5000 RPM

3: adopt high strength alloy steel, the gear after hardening treatment, not only the surface hardening, ensure the service life and use for a long time still keep the original precision

4: higher than general machine of decelerate of planet of torque

5: work efficiency is higher, the single conductor at 97%, double stages at 95%, higher at 92%