3" Down The Hole 90mm 95mm Br3 DTH Button Drill Bits For Rock Drilling
  
 Product specifications:
  
| Type | Bit Dia(mm) | No Air Holes | Guage Buttons | Front Buttons | Weight(kgs) | Part No | 
| Br3 Drill Bit | 85 | 2 | 6x13 | 4x12 | 3.8 | Br3-85 | 
| 90 | 2 | 6x14 | 4x12 | 4 | Br3-90 | |
| 95 | 2 | 6x14 | 5x12 | 4.3 | Br3-95 | |
| 100 | 2 | 8x13 | 6x13 | 4.8 | Br3-100 | |
| 105 | 2 | 8x13 | 6x13 | 5.2 | Br3-105 | 
| Product Name: | Br3 down the hole DTH drill bit | |||||
| Description: | Br3 down the hole DTH drill hammer were used for blast hole drilling and 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 brand | |||||
| MOQ: | No requirement for testing and trial order | |||||
| Series: | COP/ SD/ DHD/ IR/ Mission/ QL/ BR/ CIR etc | |||||
| 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 | 
 Product photos
 
 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.
  
 SOLLROC is a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Changsha, Hunan, China.
 We have rich experience in this field of DTH hammers and bits for 20 years.
 Owing to high quality, professional serivce and competitive price, we have gotton good reputation from our customers all over the world, such as France, Spain, Italy, South Africa, Australia, Iran, Malaysia, etc.
  
  
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