The Diamax Cyclone CNC Core Bit (SKU CDBHR014)
The Diamax Cyclone CNC Core Bit (SKU CDBHR014) is a 1/4″ (¼″) diamond core drill bit with a reverse-thread fitting designed for CNC drilling and stone fabrication. It is built for wet cutting of granite, engineered stone, and similar hard stone materials on CNC spindles where a reverse thread helps secure the bit during rotation.
Key Features
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¼″ diameter — ideal for small precision holes.
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Reverse thread (½″ gas male) for secure CNC spindle attachment.
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Diamond-segmented design for efficient cutting and longer tool life.
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Wet-only use to control heat and flush debris during drilling.
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Built for engineered stone and granite applications on automated machines.
Specifications
| Specification | Detail |
|---|---|
| SKU | CDBHR014 |
| Bit Diameter | ¼″ |
| Thread / Fitting | ½″ gas male, reverse thread |
| Usable Length | Approximately 3″ |
| Max RPM | ~2,300 |
| Cutting Type | Wet CNC drilling |
| Materials | Engineered stone, granite |
Available Items and Sizes
| ITEM # | SIZE | FITTING | USABLE LENGTH | MAX RPM |
|---|---|---|---|---|
| CDBYH114 | 1 1/4“ | 1/2 gas male | 3″ | 2,300 |
| CDBYH138 | 1 3/8“ | 1/2 gas male | 3″ | 2,300 |
| CDBYH112 | 1 1/2“ | 1/2 gas male | 3″ | 2,300 |
| CDBHR138 | 1 3/8“ | 1/2 gas male, Reverse Thread | 3″ | 2,300 |
| CDBYH012 | 1/2“ | 1/2 gas male | 3″ | 2,300 |
| CDBYH014 | 1/4“ | 1/2 gas male | 3″ | 2,300 |
| CDBYH034 | 3/4“ | 1/2 gas male | 3″ | 2,300 |
| CDBYH036 | 3/16“ | 1/2 gas male | 3″ | 2,300 |
| CDBYH038 | 3/8“ | 1/2 gas male | 3″ | 2,300 |
| CDBYH100 | 1 | 1/2 gas male | 3″ | 2,300 |
| CDBHR014 | 1/4“ | 1/2 gas male, Reverse Thread | 3″ | 2,300 |
