BRJ Medical
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High-Precision Twist Drill Bit Orthopedics Surgical Carbide Customized Drill Bit (50D Max)
The Internal Coolant Carbide Drills are engineered for high-precision drilling operations, offering effective cooling directly at the cutting edge for enhanced performance. With the ability to customize drills up to 50x diameter length and a minimum diameter of 0.6mm, these tools are ideal for deep-hole drilling in alloy materials. The internal coolant feature ensures optimal chip removal and reduces heat buildup, extending tool life and improving surface finishes.









| ITEM | Flute diameter | Max.cutting depth | Flute length | Overall length | Shank length | Shank diameter |
| RDS50030-1 | 3.0 | 166 | 171 | 215 | 36 | 6 |
| RDS50040-1 | 4.0 | 208 | 214 | 255 | 36 | 6 |
| RDS50050-1 | 5.0 | 259 | 267 | 310 | 36 | 6 |
| RDS50060-1 | 6.0 | 308 | 317 | 358 | 36 | 6 |
| RDS50070-1 | 7.0 | 357 | 368 | 409 | 36 | 8 |
| RDS50080-1 | 8.0 | 410 | 422 | 462 | 36 | 8 |
| RDS50090-1 | 9.0 | 466 | 480 | 525 | 40 | 10 |
Note: Non-standard products are available according to customer's drawing or samples. We offer a wide range of Internal Coolant Drills with standard models in stock (3D, 5D, 8D, 12D) and diameters from D3 to D25mm.
We use only high-grade alloy rods from well-known international brands. All materials are 100% sourced from original manufacturers, never recycled, ensuring high performance and wear resistance.
| Item | ALTiN | AlCr-based | TiSiN | AlCr-Blue |
| Hardness | 3100-3400 | 3100-3500 | 3300-3700 | 3300-3700 |
| Thickness | 1-2.5μ | 1-3μ | 2-3μ | 2-3μ |
| Oxidation Temp | 900-1000 | 900-1100 | 900-1000 | 900-1000 |
| Color | Black | Bright grey | Copper | Colorful Blue |




