small floor grinding machine concrete floor grinder polisher vacuuming grinding machine adjustable grinding depth 220/380v

main motor power: 4kw vacuum cleaning motor: 0.75kw operating voltage: 380v disc diameter: 350mm number of modules: 3*4 working efficiency: 20-30m2/h dimensions: 1100*500*1000mm applications: epoxy floor, solidified floor, terrazzo floor, emery floor, self-leveling floor, old epoxy floor renovation, concrete floor polishing and other construction polishing.