thread rolling machine thread rolling machine model z28-200 mainly is used for pressing precision standards parts of external thread ang high strength,including regular thread,trapezoid thread and modulax thread.the objective material to be processed inchcde carbon steel,alloy steel and nonferrous metal with elongation over 10% and tensile strength less than 100kgf/mm2 parameters: pressure of roller max.:200KN working dia:80mm thread distance max:8mm roller dia max:220mm BD of roller:75mm roller width max:180mm center distance of main shaft:150-300mm dip angle of min shaft:+-15degree rotary speed of main shaft:20,25,31,41,51,64(r/min) rolling power:11kw hydraulic power:5.5kw cooling power:0.12kw weight:3000kg size:1790*1730*1430mm