Functional features：
● The external gear is made of high-quality 20CrMnTi/20CrMo/SCM415 material, which is controllable carburizing and quenching. The tooth surface hardness is as high as HRC60±2, and the tooth surface is precision rolled with a grinding accuracy of JS grade 2: The tooth profile and direction are modified, which has the characteristics of smooth operation, low noise, high load-bearing torque, and low backlash
