1)PD90B Excavator Mounted rock drill suit to the 1520 tons excavator mounted machines. 2)The rate of the Pump can reach 200L/min, drilling diameter 38115mm, 3m depth per time drilling. 3)Drilling speed: 1 Meter/Min for hard rock, Meter/Min can drill 1m depth for soft rock. 4)Excavator mounted rock drill can use the same type of ...