12 Degree Dia 32 to 41mm Tapered Drill Bit for Mining Quarrying
Tapered equipment affords drillers the ability to change drilling bits whilst still using the same drilling rod. Drillers choose tapered button bits for faster drilling penetration rate. Different taper sizes have different characteristics when it comes to the “knock-off” index – the smaller angle will prevent the bit from spinning.
• Suitable for small hole range
• Widely used in Dimensional Stone Quarrying Industry
• Widely used in Underground Mining Industry
• Color: Green,Blue or Based on Customer requirements
|
Tapered drilling tools Types |
Diameter (mm) |
Taper Angle (Degree) |
Skirt |
Weight (kg) |
|
Tapered chisel bits |
20-60mm |
4°,6°,7°,11°,12° |
Normal, Length |
0.15 - 0.45 |
|
Tapered cross bits |
32-60mm |
Normal, Length |
0.18 - 0.7 |
|
|
Tapered button bits |
30-55mm |
Normal, Length |
0.2 - 0.5 |
Applications
• Underground mining
• Dimensional Stone Industry
• Tunneling,quarrying
Feature
1.tapered cross bits connect with tapered drill rod for drilling holes
2.Stale and mature welding technology ensure good quality of bits
3.Accurate dimension of taper degree perfectly matches the rods
4.work reliable and very cost-effective
Specification of tapered button bits
| Part Number | Bit Diameter (mm) | Bit Diameter (inch) | Front Buttons (No. x mm) | Gauge Buttons (No. x mm) | Angle | Front Flushing Holes | Side Flushing Holes | Weight (kg) |
| 4148300271 | 41 | 1 3/5 | 2x7 | 5x9 | 35° | 1 | 1 | 0.41 |
| 4148300272 | 32 | 1 1/4 | 2x7 | 5x7 | 35° | 1 | 1 | 0.3 |
| 4148300273 | 33 | 1 2/7 | 2x7 | 5x7 | 35° | 1 | 1 | 0.31 |
| 4148300274 | 33 | 1 2/7 | 2x7 | 6x7 | 40° | 2 | 1 | 0.31 |
| 4148300275 | 35 | 1 3/8 | 2x7 | 6x7 | 40° | 2 | 1 | 0.35 |
| 4148300276 | 38 | 1 1/2 | 2x7 | 5x9 | 35° | 1 | 1 | 0.41 |
| 4148300277 | 41 | 1 3/5 | 2x7 | 5x9 | 35° | 1 | 1 | 0.42 |
| 4148300278 | 35 | 1 3/8 | 2x7 | 5x9 | 35° | 1 | 1 | 0.38 |
| 4148300279 | 36 | 1 3/7 | 2x7 | 5x9 | 35° | 1 | 1 | 0.39 |
| 4148300280 | 38 | 1 1/2 | 2x7 | 5x9 | 35° | 1 | 1 | 0.41 |
| 4148300281 | 41 | 1 3/5 | 2x7 | 5x9 | 35° | 1 | 1 | 0.42 |
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