This series of lathe machine has a overall box-shaped structure made with high quality cast iron (HT300) one molding casting. After the second aging treatment, it has the feature of stable performance, good rigidity, and good anti-vibration ability. The guide way width is 970mm, and the spindle bore is 130mm. The strong rigidity of headstock, adapting to heavy cutting. Automatic segmentation speed change controlled by the M code, stepless speed within segment controlled by the S code, achieving stepless speed and constant linear cutting. The X-direction and Z-direction use the precision grinding grade ball screw, ensured a high processing accuracy, positioning accuracy and accuracy of retention. Longitudinal (Z) Feeding: for the distance between centers from 1000mm-5000mm specifications: AC servo motor that installed on the left side of the feeding box drives the ball screw via high precision planetary reducer, longer than 6000mm is the rack and pinion structure. Equipped with 4-station vertical electric turret, but also according to their customers’ needs 6-station horizontal electric turret and 8-position horizontal electric turret can be chosen. Tailstock structure is strong, which can perform heavy cutting, adopting electric tailstock to achieve automatic rapid movement and improve efficiency. Spindle motor adoptsα50-6000ip servo motor or 22kw high-power AC variable frequency main motor with frequency converter, the output is large and variable speed range is big. Equipped with Ф1250mm standard manual four-jaw chuck, but also different types of manual, pneumatic and hydraulic three-jaw or four-jaw chuck can be chosen according to customers’ need.