Name: Down Hole DTH Hammers
Name: Down Hole DTH Hammers
Specification: Weight (kg) External diameter (mm) Connection thread Hole rang (mm) Impact rate Recommended rotation speed Low air pressure DTH hammer CIR type 5 ~22 50~180 CIR 55~200 820 rpm Middle air pressure BR & COP type 10~30 70~110 85~115 3 inch DTH hammer COP34/QL30 etc 24.5 81 API 2 3/8” Reg 90~110 28Hz (at 17 bar) 28 r/min 4 inch DTH hammer COP44/DHD340 etc 39.2 99 API 2 3/8” Reg 110~150 27Hz (at 17 bar) 25~40 r/min 5 inch DTH hammer COP54/Mission50 etc 71.5 125 API 2 3/8” or API 3 1/2” Reg 135~165 25Hz (at 17 bar) 20~30 r/min 6 inch DTH hammer COP64/QL60 etc 98 142 API 3 1/2” Reg 152~216 23Hz (at 17 bar) 15~25 r/min 8 inch DTH hammer COP84/SD8 etc 188 180 API 4 1/2” Reg 203~305 20Hz (at 17 bar) 15~20 r/min
Specification: Weight (kg) External diameter (mm) Connection thread Hole rang (mm) Impact rate Recommended rotation speed Low air pressure DTH hammer CIR type 5 ~22 50~180 CIR 55~200 820 rpm Middle air pressure BR & COP type 10~30 70~110 85~115 3 inch DTH hammer COP34/QL30 etc 24.5 81 API 2 3/8” Reg 90~110 28Hz (at 17 bar) 28 r/min 4 inch DTH hammer COP44/DHD340 etc 39.2 99 API 2 3/8” Reg 110~150 27Hz (at 17 bar) 25~40 r/min 5 inch DTH hammer COP54/Mission50 etc 71.5 125 API 2 3/8” or API 3 1/2” Reg 135~165 25Hz (at 17 bar) 20~30 r/min 6 inch DTH hammer COP64/QL60 etc 98 142 API 3 1/2” Reg 152~216 23Hz (at 17 bar) 15~25 r/min 8 inch DTH hammer COP84/SD8 etc 188 180 API 4 1/2” Reg 203~305 20Hz (at 17 bar) 15~20 r/min
