... ,non-standard designs upon request HS(high speed) and MHS(medium high speed) series high speed gearboxes are our first generation ... , 390mm, 430mm, 485mm, 530mm, 580mm and 650mm respectively. MHS (medium high speed) series high speed gearboxes can be divided into 9 ... available to design and manufacture different types of high speed gearboxes for special, non-standard and extreme heavy duty applications ...