Our Vacuum Brazed Diamond Core Drill Bits represent the pinnacle of drilling technology, offering a versatile "all-in-one" solution for the most challenging hard materials. By utilizing advanced vacuum brazing diamond technology, these bits provide an ultra-strong bond between the diamond particles and the steel body, ensuring exceptional durability and precision when drilling through porcelain, ceramics, marble, and granite.
Designed for maximum efficiency, these core bits enable a seamless, chip-free drilling experience. Whether operated on an angle grinder for a hands-free approach or paired with our 10mm hex shank adapter for use with a power drill, they deliver clean holes and rapid penetration. The integrated slots in the barrel facilitate easy removal of the core plug during dry applications, making them an indispensable tool for professional masonry and tiling projects.
| Diameter Range | 20mm - 125mm (Custom sizes available) | Total Length | 60mm (Standard) |
|---|---|---|---|
| Coating Length | 10mm | Diamond Grit | #35/40 Premium Grade |
| Connection Type | M14 / 5/8-11 Threading | Compatible Tools | Angle Grinder / Power Drill |
| Min. Work Speed | 10,000 RPM | Drilling Capacity | 60 - 80 Holes per bit |
| Application | Wet & Dry (Wet recommended) | Customization | Available based on drawings/samples |
Vacuum brazing technology ensures a superior diamond bond, allowing the bit to withstand high friction and extend its service life.
Premium #35/40 diamond grit enables fast and smooth drilling, significantly reducing project completion time.
The vacuum diamond coating creates precise, chip-free holes, ensuring a professional finish on fragile ceramics.
A single tool optimized for marble, onyx, porcelain, limestone, travertine, and granite.
Capable of both wet and dry applications; wet use is recommended to prevent overheating and maximize lifespan.
Engineered with specialized slots in the barrel to assist in releasing the core plug during dry drilling.
Wide range of diameters from 20mm to 125mm kept in stock for immediate dispatch.
Ability to manufacture steel blanks and custom lengths based on your technical drawings.
Rigorous testing of vacuum brazing strength to ensure each bit meets industrial standards.
Standardized M14 and 5/8-11 threading for seamless integration with global power tools.
Optimized packaging for diamond tools to ensure safe delivery and prevent coating damage.
Expert advice on wet vs dry application to maximize the lifespan of your core bits.
| Feature | Standard Sintered Bits | Vacuum Brazed Bits | Business Impact |
|---|---|---|---|
| Hole Quality | Higher risk of chipping | Precise & Chip-free | Lower Material Waste |
| Drilling Speed | Moderate | High Speed | Faster Project Turnaround |
| Lifespan | Standard Wear | Extended (60-80 holes) | Lower Tooling Cost/Hole |
| Versatility | Material Specific | All-in-One (Porcelain/Marble) | Reduced Tool Inventory |
| Operation | Mainly Wet | Wet & Dry Capable | Increased Site Flexibility |
Vacuum brazing creates a stronger, more direct bond between the diamond and the steel, allowing for faster drilling and a cleaner finish on very hard materials like porcelain, whereas sintered bits often require a specific matrix for each material.
Yes, they are capable of dry applications. However, we strongly recommend wet drilling to cool the bit, which prevents overheating and significantly extends the lifespan of the diamond coating.
To use these bits with a power drill, you will need our 10mm Hex Shank Drill Adapter, which converts the threaded connection into a standard shank compatible with most power drills.
They are engineered for hard, non-metallic minerals including porcelain, ceramics, marble, granite, onyx, limestone, and travertine.
Depending on the hardness of the material and the use of coolant, a single high-quality bit can typically drill between 60 to 80 holes before requiring replacement.
Yes, we can manufacture custom diameters and steel blank lengths based on your specific drawings or samples to meet your project's technical requirements.

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No.30 Gaoying Road ,Chang'an District,Shijiazhuang,Hebei Province
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Sunday & Holidays : Closed