... used super-large rectangular structure of the four rails,high Machine rigidity. 3.X,y,z ... are affixed to the rails widening rectangular plastic sliding rails, the IF quenching and precision scratching ... thermal variations on the positioning accuracy 7.The guide screw for the pre-stretch structure, reduces ... nose to table mm150-850Spindle center to Column guide-way facemm850High speed feeding of X,Y, ...