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Down Hole Hammers - Drilling, Water Well, Water Well, Foundation Boring, Mining

Quantity:
  • DHD3.5, DHD340, DHD350, DHD360, DHD380
  • Jinquan
  • China
  • Ply-wooden cases
  • Within 15-25 days according to your order quantity
  • 1
  • T/T
Name: Down Hole DTH Hammers
Series:CIR, BR, COP,DHD,MISSION,QL,SD,NUMA
Package: Ply-wooden case
Delivery time: 15 days
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

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