R28 Reaming Drill Bit Stone Drill Bits CNC Tunneling Mining Quarrying Construction
Description
This type of bit is used for making large cut holes in drifting and tunneling. A smaller hole is first drilled and then reamed to the final size in combination with a pilot adapter.
• Widely used in drifting and tunneling
• R28 thread system
Color: Green,Blue or Based on Customer requirements
Material: Tungsten carbide and high strength alloy steel
Processing: CNC milling and proprietary heat treatment process
Type: R28 Reaming Bit 6
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
| Part Number | Bit Diameter (mm) | Bit Diameter (inch) |
Front Buttons (No. x mm) |
Gauge Buttons (No. x mm) |
| 4148300452 | 64 | 2 1/2 | 2x10 | 8x9 |
| 4148300453 | 64 | 2 1/2 | 4x8 | 8x9 |
| 4148300454 | 76 | 3 | 2x11 | 8x11 |
| 4148300455 | 76 | 3 | 4x10 | 8x10 |
| 4148300456 | 89 | 3 1/2 | 4x11 | 8x11 |
| 4148300457 | 89 | 3 1/2 | 4x10 | 8x10 |
| Product Code and Brief Description | Angle |
Front Flushing Holes |
Side Flushing Holes |
Weight (kg) |
| RE1064-6D-R28, R28 Reaming Bit 6° | 35° | - | - | 0.8 |
| RE1264-6D-R28, R28 Reaming Bit 6° | 25° | - | - | 0.8 |
| RE1076-6D-R28, R28 Reaming Bit 6° | 35° | - | - | 1.2 |
| RE1276-6D-R28, R28 Reaming Bit 6° | 30° | - | - | 1.2 |
| RE1289-6D-R28, R28 Reaming Bit 6° | 35° | - | - | 1.7 |
| RE1289-6D-R28, R28 Reaming Bit 6° | 30° | - | - | 1.7 |
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