DTH hammer, used to drill hole diameter from 105-120mm Technical Parameter ModelQKH345Hole Dia Φ105-120mmOuter Dia Φ98mmOverall Length 1034mmWeight 39kgWorking Air Preeeure 1.2-2.0MpaAir Consumption 3.5-15M3MinImpacting Frequency 800 times/MinImpacting Energy 335N.MConnecting to Drill RodAPI 2-7/8'' BoxConnecting to BitΦ64-8 DTH hammer QKH-345 drilling diameter 105-120mm