... -1 ton, RN-2 ton, RN-3 ton, RN-5 ton, RN-10 ton, RN-15 ton, RN-20 ton, RN-30 ton, RN-40 ton, RN-50 ton, RN-100 ton ... are available for each model. Fast ratio,1 turn shaft,1 mm stroke; Medium ratio,1 turn shaft,0.5 mm stroke;Low ... ratio,1 turn shaft,0.25 mm stroke. * Electric Motor Horsepower Range ...