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DTH Bit-QL60-165 mm for Mining and water well Drilling
- Code No.: QL60-165
- Diameter:165mm
- Air Holes No.: 2
- Gauge Buttons: 9*18mm
- Face Buttons: 9*16mm
- Face Design: Convex face
- Carbide Design: Dome
- Approx. Weight: 25KGS
A QL60 drill bit is a DTH (Down-The-Hole) hammer bit used for drilling large-diameter holes in hard rock formations.
The "QL60" refers to the specific type of QL series DTH hammer it is designed to work with, which typically has a 6-inch shank. These bits are characterized by tungsten carbide buttons that break up rock through high-impact forces from the hammer, combined with rotation from the drill string.
| Face Shape | Head Diameter (mm) |
Shank Length | Spline | holes Qty | Button qty.pcs * Dia.(mm) | Weight (Kg) |
||
| Button Type (Optional) |
Gauge Buttons | Front buttons | ||||||
| concave face | 154 | 253 | 12 | 2 | Dome | 8*Φ18 | 4*Φ16+4*Φ15 | 22.5 |
| Flat Face | 165 | 253 | 12 | 2 | Dome | 8*Φ18 | 8*Φ16 | 23 |
| concave face | 171 | 253 | 12 | 2 | Dome | 8*Φ18 | 6*Ø16+4*Ø15 | 24.4 |
| concave face | 178 | 253 | 12 | 2 | Dome | 8*Φ18 | 6*Φ16+5*Φ15 | 25.3 |
| concave face | 190 | 253 | 12 | 3 | Dome | 9*Φ18 | 6*Φ16+5*Ø15 | 26.5 |
| concave face | 203 | 253 | 12 | 2 | Dome | 10*Φ18 | 8*Ø16+6*Ø15 | 29.7 |
Key features and functions
- Purpose: Used for applications like mining, quarrying, water well drilling, and general construction where holes need to be drilled in hard rock.
- Working principle: It functions with a DTH hammer, which is located directly behind the bit. The hammer delivers rapid, powerful impacts to the bit, while the drill string rotates it.
- Construction: Typically made from high-quality carbon steel and features durable tungsten carbide buttons for wear resistance.
- Shank type: The "QL60" shank signifies a 6-inch connection, and the bit is engineered to fit this specific hammer.
- Hole size: The resulting hole diameter can vary, but QL60 bits are often used for drilling holes in the 155mm to 190mm (approximately 6 to 7.5 inches) range, depending on the specific bit model.
- Customization: QL60 bits are available with different face designs (flat, concave, convex) and button configurations to optimize performance in various rock types and conditions.
Rock drilling tools factory ProDrill produces DTH Drill Bits with QL shank type are available in a various range of sizes and with a number of custom design features for optimum performance in a rock formation.
Rock drill bits Shank type: QL40, QL50, QL60, QL80 ; and DTH hammer bits hole diameter: 3", 4", 5", 6", 8"(85mm-350mm).
Flat Face：This flat face is suitable for drilling very hard rock formations and corrosive wall formations at high air pressures. When the bits is drilling,the faster the drilling speed, the less wear of the drill body.
Concave Face：This Concave face is suitable for all rock formations, especially in medium-hard and homogeneous rock formations, the effect is good.The blast hole deviation is small, and the slag discharge effect is good.
Down-the-hole drilling is a technique where the drill bit is mounted at the end of a drill string and driven by a pneumatic hammer. This method is efficient for drilling through hard rock formations encountered in surface mining. The hammer continuously strikes the bit, creating downward force and breaking the rock. The broken rock fragments are then flushed out of the hole using compressed air or water.
