1)Roller dia:550mm 2)Round speed: 1100r/m 3) M Output: 120-150kg/h 4)Output: 120-150kg/h The 550mm opener is the most advanced opener series which hold multi-roller at present. With advantages of Efficient, save, long fiber and less neps,etc. almostly no need cutting machine to cut cotton waste, rags , thread end and other material , very popular in users both home and abroad. It can save at ...