+86 10 8467 3566
+86 10 8467 3566
Size Range: 2 to 24 inch
Shanks: DHD,MISSION,SD,QL,CIR
>> Application
DTH drilling is a percussion system driving a piston inside hammer body with up and down motion by compressed air and transmitting an intensive percussion energy to the bit to enable the drilling by crushing the rock. Drilling method by DTH hammer exerts high drilling performance especially for drilling hard rock and contributes for shortening work schedule. Hence, this method is widely utilized for foundation work, landslide prevention work, quarrying services, marine civil work, etc.
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PRODUCT DESCRIPTION
>> Characteristics
In DTH drilling, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH drilling a nearly constant penetration rate regardless of hole length.
DTH bits are paired with their corresponding hammers (by drilling hole diameter and spline configuration). Customers can customize their DTH bits in various ways, such as changing the tungsten carbide insert profile (spherical, ballistic, etc.), face profile (flat face, concave, convex, etc.), and flushing holes.
• Medium to large size drilling diameters
• Works in high pressure range, capable of drilling deep hole length.
>> Specification
| Type | Size | 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 | |
| All can be designed according to your requests! | |||
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