... power transmission capacity 3,high stability, low noise,light 4,non-standard designs upon request HS(high speed) and MHS(medium ... widely used in some critical equipment for metallurgical, petrochemical, power generating, national defense, paper making, sugar making, and ... 390mm, 430mm, 485mm, 530mm, 580mm and 650mm respectively. MHS (medium high speed) series high speed gearboxes can be divided into ...