| Model Number | 3/3.5,4,5,6,8,10,12 inches | Certification | ISO CE |
| Drill Rock hardness | F=6-20 | Warranty | 1 Year |
| Condition | New | After-sales Service | 7X24hours available |
| Type | Rotary Drilling Rig | Color | As request |
| Processing Type | Forging | Button shape | Spherical, Ballistic, Semi-ballistic |
| Place of Origin | Beijing, China (Mainland) | Bit face shape | Flat, concave, convex, drop center |
| Brand Name | JCDRILL | Other shanks | COP,DHD,MISSION, SD |
| Usage | Rock drilling | Type | DTH Hammer |
| Material | Carbide | Machine Type | Drilling Tool |
Introduction
In case of jamming of any driling tool during the boring process, the back hammer will help you save time and money.
The back hammer may be mounted on the drill pipe joint between the borehole gripper and the swivel head, thus, creating a combined effect of effective reverse impact and vibration.
Sturdy and reliable, the back hammer is composed of three components and a plastic housing which acts both as an exhaust emission guider and a muftler. With regards to the maintenance, i's only necessary to keep it clean and the linking section well protected when the back hammer is not working.
The Back hammer is designed to give percussion mechanism in which the impact power is directed backwards to help free DTH Hammer and drill pipes that have jammed in the drill hole.
The Back Hammer is designed to help to free a DTH hammer and drill pipes that have jammed in the drill hole. It can also be used to hammer down or withdraw casings.
The Back Hammer is mounted between the rotating unit and the drill pipes or between drill pipes.
DTH Hammer and drill pipes that have jammed in the drill hole. It is used widely in DTH air drilling .
| Back Hammer | |||||
| Products | Pressure | Thread | Total Length(mm) | Diameter | KG |
| LBH140 | 8Bar | API 3 1/2" | 510 | 140 | 31 |
| LBH160 | 8Bar | API 3 1/2" | 540 | 160 | 44 |
| LBH190 | 8Bar | API 4 1/2" | 580 | 190 | 63 |
| LBH240 | 8Bar | API 4 1/2" | 600 | 240 | 85 |
| DTH Hammer | ||
| Type | Model | Outer Diameter |
| High pressure DTH Hammer | ||
| 3 inch | JD25A | 71mm |
| 3.5 inch | JD35A/M30 | 82mm |
| 4 inch | JD45A/QL40A/M40/SD4 | 99mm |
| 5 inch | JD55A/QL50A/M50/SD5 | 125mm |
| 6 inch | JD65A/QL60A/M60/SD6 | 142mm |
| 8 inch | JD85A/QL80A/M80/SD8 | 180mm |
| 10 inch | HD100A/SD10 | 225mm |
| 12 inch | JD125A/SD12 | 275mm |
| 14 inch | JD140A | - |
| Middel Pressure DTH Hammer | ||
| 2.5 inch | BR1 | 56mm |
| 3 inch | BR2 | 64mm |
| 3.5 inch | BR3 | 82mm |
| Lower Pressure DTH Hammer | ||
| 3 inch | CIR65 | 68mm |
| 3.5 inch | CIR70 | 76mm |
| 4 inch | CIR90 | 99mm |
| 5 inch | CIR110 | 110mm |
| 6 inch | CIR150 | 150mm |
| 8 inch | CIR170 | 170mm |
| Back Hammer | ||
| 6 inch | BH140 | 155mm |
| 8 inch | BH170 | 190mm |
| 10 inch | BH190 | 220mm |
| 12 inch | BH240 | 190mm |
Picture
| Minimum Order Quantity | N/A |
| Price | |
| Packaging Details | Standard Export Delivery Package |
| Delivery Time | 7days |
| Payment Terms | T/T |
| Supply Ability | Based on Detailed Order |
