... single line)5,Max. arris grinding: 3mm6,speed: 1~6.5 m/min,request achieve the best polishing ... effect 1,2,3 1,when the grinding thickness is 4mm-8mm, speed ... ,when the grinding thickness is 10mm-12m, speed: 2.3m/min 3,when the grinding ... lifting. 5.Master drive adopt mechanism frequency conversion speed regulation, main driving axle upper place, easy change ...