... 186kg Working Efficiency(m2/h) 260 1 NJ250 road milling machine usage:To remove the ground coating, paint, a ... concrete floor were moderate milling, cleaning, picking operations 2 Features1).With milling depth dial,milling depth can be precisely ... case of an emergency.7).With 6 long life milling drums (blade shafts), a wide variety of drums ... is damaged and need renovation small road milling machine