HD65A Down The Hole Hammer for Mining

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 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1