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Description
This type of bit is well known for its high wear resistance on medium-hard to hard abrasive rock formations (between 200 Mpa to 260 Mpa compressive strength). Featuring spherical tungsten carbide inserts that is known to have strong configuration against carbide fracture.
• Widely used drifting and tunneling
• Bit face design is ideal for medium-hard to hard abrasive rock
Color: Green or Based on Customer requirements
Material: Tungsten carbide and high strength alloy steel
Processing: CNC milling and proprietary heat treatment process
Type: R28 Button Bit Ballistic Buttons
Applications
• Underground mining
• Tunneling
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
specification
1
<
| Part Number | Bit Diameter (mm) | Bit Diameter (inch) |
Front Buttons (No. x mm) |
Gauge Buttons (No. x mm) |
| 4148300443 | 37 | 1 4/9 | 2x7 | 5x9 |
| 4148300444 | 38 | 1 1/2 | 2x8 | 4x9 |
| 4148300445 | 38 | 1 1/2 | 2x7 | 5x9 |
| 4148300446 | 41 | 1 5/8 | 2x8 | 5x9 |
| 4148300447 | 43 | 1 5/7 | 2x9 | 5x9 |
| 4148300448 | 45 | 1 7/9 | 2x9 | 5x10 |
| 4148300449 | 45 | 1 7/9 | 3x8 | 6x9 |
| 4148300450 | 48 | 1 8/9 | 2x9 | 5x11 |
| 4148300451 | 48 | 1 8/9 | 3x8 | 6x9 |
2
<
| Product Code and Brief Description | Angle |
Front Flushing Holes |
Side Flushing Holes |
Weight (kg) |
| B737-R28-B, R28 Button Bit, Ballistic Buttons | 30° | 1 | 1 | 0.5 |
| B638-R28-B, R28 Button Bit, Ballistic Buttons | 30° | 1 | 2 | 0.6 |
| B738-R28-B, R28 Button Bit, Ballistic Buttons | 30° | 1 | 1 | 0.6 |
| B741-R28-B, R28 Button Bit, Ballistic Buttons | 35° | 1 | 1 | 0.7 |
| B743-R28-B, R28 Button Bit, Ballistic Buttons | 35° | 1 | 2 | 0.8 |
| B745-R28-B, R28 Button Bit, Ballistic Buttons | 30° | 1 | 2 | 0.9 |
| B945-R28-B, R28 Button Bit, Ballistic Buttons | 35° | 1 | 3 | 0.9 |
| B748-R28-B, R28 Button Bit, Ballistic Buttons | 30° | 1 | 2 | 1.0 |
| B948-R28-B, R28 Button Bit, Ballistic Buttons | 35° | 1 | 3 | 1.0 |
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