... kg) 186kg Working Efficiency(m2/h) 260 1 NJ250 road milling machine usage:To remove the ground coating, paint, a ... were moderate milling, cleaning, picking operations 2 Features1).With milling depth dial,milling depth can be precisely controlled;2).Drum support ... dust removal device and external water source;10).Patented drum support bracket with quick disassembled design, installation or removal ...