... speed motor—three grade gear speed changing. It is with the characteristics of high driving speed, high rigidity, ... centers 3000mmCylindrical diameterwith center restMin.φ30mm max.φ180mmWithout center rest Min.φ30mm max.φ500mmThe max. grinding length with tailstock dressing ... 20,40,60,80,120,160r/minTailstock center movement70mmWork head center morse #6Tailstock center morse #6(5)Grinding carriage Max. ...