High Air Pressure 90mm 100mm 3inch Dhd3.5 Water Well Drill Bits
High Air Pressure 90mm 100mm 3inch DHD3.5 Water Well Drill Bits
DTH Drill Bit
DTH bit is the tool cutting rocks, and subject to severe stress from the striking piston as well as from the abrasive cuttings passing the bit at high velocity. When selecting the right bit for optimum performance you have to balance penetration against bit life. On occasion you can successfully sacrifice bit life for penetration, remember the rule of thumb that states that a 10% increase in penetration covers at least a 20% loss in bit life.
We can design and manufacture the personalized products to meet your specical apllication, such as changing the tungsten carbide insert profile (spherical, ballistic, etc.), face profile (flat face, concave, convex, etc.), and flushing holes.
Hammer size: 2”~3.5” 4”~8” 10”~32”
Hammer Shank Style: BR, AHD, Cop, Mission...
Mincon, Numa, QL, TD...
SD, DHD, XL, ACD, Mach...
Face Design: Flat, Concave, Convex
DHD3.5 DTH Drill Bit Specification
| DHD3.5 | ||||||
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| Ballistic Convex Face | ||||||
| Bit Diameter (mm) |
Bit Diameter (inch) |
Buttons (mm) |
Flushing holes | Weight (kg) |
Part number | |
| Front | Gauge | |||||
| 90 | 3 1/2 | 4*12,2*12 | 8*12 | 2 | 4.5 | 4148301219 |
| 95 | 3 3/4 | 4*12,2*12 | 8*12 | 2 | 4.8 | 4148301220 |
| 100 | 3 7/8 | 4*13,2*13 | 8*13 | 2 | 5 | 4148301221 |
| 105 | 4 1/8 | 4*14,2*14 | 8*14 | 2 | 5.5 | 4148301222 |
| DHD3.5 | ||||||
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| Spherical Flat Face | ||||||
| Bit Diameter (mm) |
Bit Diameter (inch) |
Buttons (mm) |
Flushing holes | Weight (kg) |
Part number | |
| Front | Gauge | |||||
| 90 | 3 1/2 | 6*12 | 8*12 | 2 | 4.5 | 4148301223 |
| 95 | 3 3/4 | 6*12 | 8*12 | 2 | 4.8 | 4148301224 |
| 100 | 3 7/8 | 6*13 | 8*13 | 2 | 5 | 4148301225 |
| 105 | 4 1/8 | 6*14 | 8*14 | 2 | 5.5 | 4148301226 |
Button bit and Insert types
Spherical Button Characteristics:
1. Universal button
2. Good wear resistance
3. Best suited for hard ground
4. 27000-48000PSI(180 to 320Mpa)
5. Suited for abrasive to very abrasive drilling conditions
Ballistic Button Characteristics:
1. Fast Penetration
2. Best suited for soft rock
3. 10000-20000PSI(70 to 140Mpa)
4. Suited for non-abrasive drilling conditions
Conical Button Characteristics:
1. Fast Penetration
2. Best suited for smaller diameter bits
3.Suited for non-abrasive drilling conditions
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.