High Quality Mining Drill Bits T38 89mm Drop Center Threaded Drill
Bit for Mining Blasting Drilling
Product Description:
The threaded drill bit is equipped with the hydraulic drilling
jumbo and used for crush rock ,and it is widely used in tunnel
construction, large scale mine(open and underground )and large
section tunnel advance in metal mine.How to choose the drill bit
design is very important for the drilling work efficiency:
Spherical buttons: The height of exposed teeth is low, mainly used
in the very hard rock formation above F14, to improve wear
resistance, to prevent the situation of debris, it should take
lower drilling speed.
Ballistic buttons: It can expose more height of buttons, mainly
used in soft rock and ordinary rock below F12, with quicker
drilling speed, but encountered hard rock, very easily to happen
buttons debris phenomenon.
These threaded button bits can meet different drilling requirements
in all rock formations. We can offer special designs according to
customer's requirements for specific work situation. The button
bits can transmit intensive impact energy into the rock with the
least loss of energy.
1. Face: Flat, Convex, Concave, Drop-center.
2. Carbide Button Shape: Spherical, Semi-ballistic, Ballistic and
Two-step
3. Bit Shank: COP/DHD/QL/SD/MACH/BR
Products Parameters:
| Product Name: | Button Drill Bit |
| Diameter: | 64mm |
| Button Size: | Front 5*11mm Gauge 8*13mm |
| Thread: | T38 |
| Flushing Hole: | 4 Front and 1 Side |
| Application: | Button drill bits are used in granite and marble quarry, gold mine,
railway, tunnel, etc. for drilling |
| Weight: | 4.1 kg |
| Button Type: | Spherical |
| Body Type: | Normal( Round) |
| Face Type: | Flat Face |
| Material: | Alloy steel bar 45CrNiMoV and tungsten carbide tips YK05 |
| MOQ: | No requirement for testing and trial order |
We can design and manufature according to your requirment of
diameter, number air holes and carbide button shape |
Product Advantage:
Carbide:
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.
Steel:
First class special alloy steel with high strength, heat resistance
and wearable
Specification of other Thread Button Bits:
| Name of Product | Diameter | Button size(mm) | No. of Flushing Holes | Weight |
| mm | Gauge | Front | Side | Side | (kg) |
| T38 Thread | 57 | 5*11 | 3*10 | 1 | 1 | 1.6 |
| 64 | 5*12 | 3*11 | 1 | 1 | 1.6 |
| 76 | 5*14 | 3*12 | 1 | 2 | 2.4 |
| 64 | 8*9 | 4*9 | 2 | 2 | 1.8 |
| 76 | 8*11 | 4*10 | 2 | 2 | 2.6 |
| 89 | 8*12 | 6*11 | 2 | 2 | 3.3 |
| 102 | 8*13 | 6*12 | 2 | 2 | 4.7 |
| 64 | 6*10 | 4*9 | 0 | 3 | 1.7 |
| 70 | 6*11 | 4*10 | 0 | 3 | 2.2 |
| 89 | 6*14 | 4*12 | 0 | 3 | 4.3 |
| 64 | 8*9 | 5*8 | 0 | 4 | 1.7 |
| 70 | 8*10 | 5*9 | 0 | 4 | 2.2 |
| 76 | 8*11 | 5*10 | 0 | 4 | 2.7 |
| 89 | 8*12 | 6*11 | 0 | 4 | 3.3 |
| 102 | 8*13 | 6*12 | 0 | 4 | 4.7 |
| T38 Retract Thread | 60 | 8*9 | 3*9 | 2 | 2 | 1.7 |
| 64 | 8*9 | 4*9 | 2 | 2 | 2 |
| 70 | 8*10 | 4*10 | 2 | 2 | 2.4 |
| 76 | 8*11 | 4*10 | 2 | 2 | 3.2 |
| 89 | 8*12 | 5*12 | 2 | 2 | 5.8 |
| 64 | 8*9 | 5*9 | 0 | 4 | 1.9 |
| 70 | 8*10 | 5*10 | 0 | 4 | 2.4 |
| 76 | 8*11 | 5*10 | 0 | 4 | 3.3 |
| 89 | 8*12 | 6*11 | 0 | 4 | 5.3 |
