HD65A Down The Hole Hammer for mining 1, valveless air
distribution. More reliable. 2, simple design of the piston, long
life. 3, More efficient energy transfer, faster drilling speed,
lower air consumption and lower oil consumption. 4, fewer internal
parts, simple structure, longer life, less failure and easier to
maintain becayse all the parts are heat treated. 5, It is easy to
disassemble because the top sub, the drive chuck and the external
cylinder are connected by multi-step thread. Available series of
DTH hammer: 1) high pressure SD series hammer: SD 5, SD 6, SD 8 and
SD 12 DTH Hammers. QL series hammer: QL 50, QL 60, QL 80 DTH
Hammers. HD series hammers: DHD 3.5, DHD 340. DHD 350, DHD 360,
DHD380 DTH Hammers. Mission series hammers: M30, M40, M50, M60, M80
DTH Hammers. Cop series hammers: Cop 32/34, Cop 42/44, Cop 54/64
DTH Hammers. 2) low air pressure: BR1, BR2, CIR 70, CIR 90, J60,
J80, J100, J150, etc. Product Name:CIR90 down the hole DTH drill
hammerDescription:CIR90 down the hole DTH drill hammer were used
for blast hole drillingand water well drilling project.Working with
DTH drilling pipe and DTH drill bit, mainly applied in
Mining,Marble quarry or well drilling and other construction
projects.Quality level:95% similarity to COP/SD/MISSION/QL/BR/DHD
etc famous brandMOQ:No requirement for testing and trial
orderSeries:COP/ SD/ DHD/ IR/ Mission/ QL/ BR/ CIR
etc Specification:Weight (kg)External Diameter (mm)Connection
threadHole rang (mm)Impact rateRecommended rotation speedLow air
pressure DTH hammer CIR type5 ~2250~180CIR**55~200820
rpm Middle air pressure BR & COP
type10~3070~110 85~115 3 inch DTH hammerCOP34/QL30
etc24.581API 2 3/8" Reg90~11028Hz (at 17 bar)28 r/min4 inch DTH
hammerCOP44/DHD340 etc39.299API 2 3/8" Reg110~15027Hz (at 17
bar)25~40 r/min5 inch DTH hammerCOP54/Mission50 etc71.5125API 2
3/8" or API 3 1/2" Reg135~16525Hz (at 17 bar)20~30 r/min6 inch DTH
hammerCOP64/QL60 etc98142API 3 1/2" Reg152~21623Hz (at 17 bar)15~25
r/min8 inch DTH hammerCOP84/SD8 etc188180API 4 1/2" Reg203~30520Hz
(at 17 bar)15~20 r/min /* March 10, 2023 17:59:20
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