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Specification
Dth rock drill bits are in different sizes ranging from 3" to 12".
Dth rock drill bits are available in valveless model and is competent to operate in harsh conditions
Color: Green,Blue or Based on Customer requirements
dth rock drill bits have four kinds of button type
1. Spherical button : good wearing resistance, suited to hard ground, abrasive to very abrasive.
2. Parabolic button : fast penetration,suited to medium to hard rock,suitable for the mildly abrasive ground.
3. Conical button : fast penetration, suited for smaller diameter bits, suited for all non-abrasive ground types.
4. Ballistic button : fast penetration,suited to soft rock, suitable for non abrasive ground
Applications of DTH Bit
• Underground mining
• Tunneling
• Quarry benching operations
Competitive Advantage
• High grade tungsten carbide inserts
• Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment
Technical Manual
| 3 Inch | 3.5 Inch | 4 Inch | 5 Inch | 6 Inch | 8 Inch | 12 Inch | |
Drilling diamter (mm) | Φ82-85 | Φ90-93 | Φ105-130 | Φ130-152 | Φ152-305 | Φ203-305 | Φ302-508 |
Hammer length (mm) | 867 | 908 | 1052 | 1387 | 1450 | 1551 | 1934 |
External diamerer (mm) | Φ71 | Φ81 | Φ92 | Φ114 | Φ136 | Φ181 | Φ275 |
Weight (kg) | 19 | 21.8 | 38 | 69 | 126 | 277 | 642 |
Working pressure (Mpa) | 0.8-2.1 | 0.8-2.1 | 0.8-2.1 | 0.8-2.1 | 0.8-2.1 | 0.8-2.1 | 0.8-2.1 |
Air consumption (m3/min) | 3-12 | 4.3-14.2 | 3.5-18 | 5.7-18 | 8.5-25 | 12-31 | 14-45 |
Torque (N.M) | 150 | 205 | 304 | 590 | 822 | 1560 | 2410 |
Lmpact frequenc (Time/Min) | ≥800 | 950-1500 | ≥800 | 810-1470 | 820-1475 | 860-1510 | 980-1446 |
| Connection thread | inside 48.8x4.2 | outside API 2-3/8" | inside API 2-3/8" | outside API 3-1/2" | outside API3-1/2 | outside API4-1/2" | outside API6-5/8" |
| Connection thread | Φ47-6 | Φ53-8 | Φ64-8 | Φ84-8 | Φ99.5-8 | Φ128-10 | Φ184-8 |
| Bit shank | 3"-85 | 3.5"-90 | 4"-105/115 /130 | 5"-130/140 /152 | 6"-152/165/230/254 /305 | 8"-152/165/230/254 /305 | 12"-302/311/483/508 |
DTH bit for 12" DTH Hammer
Dia.(mm) | Qty.× Button Dia.(mm) | Qty.Air Holes | Weight (kg) | ||
Outer | Front | Back | |||
311 | 15×18 | 15×18+15×16 | 12×12 | 3 | 140 |
315 | 18×18 | 9×18+15×18+9×16 | 9×16 | 3 | 145 |
320 | 18×18 | 9×18+15×18+9×16 | 9×16 | 3 | 190 |
333 | 18×19 | 9×18+15×18+14×16 | 6×12+6×16 | 3 | 200 |
350 | 15×19 | 9×19+15×19+15×16 | 12×12 | 3 | 210 |
380 | 18×18 | 12×18+18×18+21×16 | 9×14 | 3 | 235 |
Product Code and Brief Description | Flushing Holes | Diameter (mm) | Weight (kg) | Gauge Buttons ( No.x mm) | Front Buttons ( No. x mm) |
DTH90A | 3 | 90 - 95 | 3.6 | 6 x 14 | 4 x 12 |
DTH80XD-90 | 3 | 90 - 95 | 3.4 | 6 x 12 | 4 x 12 |
DTH80-II-80 | 3 | 80 - 82 | 3 | 5 x 12 | 4 x 12 |
DTH90B | 3 | 90 - 95 | 3.8 | 6 x 14 | 4 x 12 |
DTH90T1 | 2 | 90 - 95 | 3.6 | 6 x 14 | 1x12,3x12 |
DTH90T2 | 2 | 90 - 95 | 3.8 | 6 x 14 | 4 x 12 |
DTH90T3J | 3 | 90 - 95 | 3.6 | 6 x 14 | 4 x 12 |
