Diamax Cyclone Dry/Wet Core Bits with Side Protection
The Diamax Cyclone Dry/Wet Core Bits with Side Protection are premium-grade diamond-tipped coring tools developed for hole drilling applications in granite, engineered stone (quartz), marble, and similar hard materials. Each bit is crafted with a reinforced T-segment diamond matrix and features diamond side protection on both the exterior and interior shaft, which enhances cut stability and reduces the risk of bit breakage or core bind-up during drilling. Designed for use with standard 5/8″-11 threaded drills and angle grinders, these core bits excel in both wet and dry conditions allowing versatility whether working on site or in shop environments.
Key Features
High-Quality Diamond Segments
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Segments formulated with premium industrial diamond grit for strong cutting performance in hard stone materials.
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Side protection diamonds help guard the bit against damage and core plug binding, resulting in longer tool life.
Dual Wet/Dry Capability
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Designed to drill wet or dry, giving fabricators flexibility when water supply may be limited.
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Using water increases bit life and reduces heat buildup — substantially improving performance and dust management.
Standard Thread Fitting
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Fitted with a 5/8″-11 male thread, compatible with most handheld drills, angle grinders, and core drilling adapters used in stone fabrication.
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Provides secure attachment and minimal vibration during drilling.
Precision Hole Drilling
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Creates clean, accurate holes with minimal chipping or surface flaking, making it ideal for plumbing, electrical, and faucet installations through stone slabs.
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The advanced segment design helps maintain hole roundness and finish quality.
Variable Sizes for Different Applications
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The Cyclone core bit group includes several diameters — from smaller hole sizes up to larger core bits — enabling you to choose the right size for specific drilling needs.
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Each size maintains consistent design priorities: durability, hole quality, and ease of use.
Typical Uses
These core bits are ideal for:
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Plumbing and faucet holes through granite, quartz, and marble countertops.
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Electrical box and outlet drilling where clean pass-through holes are critical.
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HVAC mounting and conduit routing through stone and engineered surfaces.
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Installing sinks and fixtures where precise hole placement and minimal chipping are required.
Across all applications, the bits perform well when operated at appropriate speeds and with water for cooling whenever possible — especially on larger diameters or thick stone slabs.
Performance Notes
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Recommended drilling speeds and technique vary by diameter (smaller bits may run at higher RPMs).
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Wet drilling typically improves diamond segment life and reduces airborne silica dust.
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For extended bit life and optimal hole quality, maintain steady pressure and avoid excessive side loading.
Item List
| ITEM # | SIZE | FITTING | USABLE LENGTH | MAX RPM WET | MAX RPM DRY |
|---|---|---|---|---|---|
| CDBYNC316 | 3/16″ | 5/8″ – 11 thread | 2″ | 6,500 | 2,000 |
| CDBYNC516 | 5/16″ | 5/8″ – 11 thread | 2″ | 6,500 | 2,000 |
| CDBYNC14 | 1/4″ | 5/8″ – 11 thread | 2″ | 6,500 | 2,000 |
| CDBYNC38 | 3/8″ | 5/8″ – 11 thread | 2″ | 6,500 | 6,000 |
| CDBY12 | 1/2″ | 5/8″ – 11 thread | 2.75″ | 8,000 | 6,000 |
| CDBY58 | 5/8″ | 5/8″ – 11 thread | 2.75″ | 8,000 | 6,000 |
| CDBY34 | 3/4″ | 5/8″ – 11 thread | 2.75″ | 8,000 | 6,000 |