Quartz Granite Cutting Bit CBQ10-30
Brazed diamond cutting bit for quartz and granite. The 10 mm head, 38 mm diamond section and 85 mm overall length give extra reach for thick slabs, deep grooves and sink openings on CNC stone routers and machining centers.
- Brazed diamond grit for fast stock removal on abrasive quartz
- Clean, chip-free edges that cut polishing time
- 10 mm shank fits standard CNC collets with low run-out
- Wet or dry operation — wet cutting recommended
- Custom diameters, grits and lengths available
Reply within 12 hours · OEM & custom sizes · Worldwide shipping
Product Overview
The CBQ10-30 is a brazed diamond CNC bit for shops cutting quartz, granite and engineered stone. With a 38 mm diamond section on an 85 mm body, it reaches through thick slabs and deep sink openings in one setup — fewer tool changes, straighter walls and a consistent finish from top to bottom.
Diamond grit is brazed onto the steel body, keeping the cutting layer exposed as it wears, so feed rate and surface quality stay stable over long production runs. Typical jobs include sink and hob cut-outs, deep drainboard grooves, edge profiling and engraved lettering on CNC stone routers.
Key Features
Diamond particles are chemically bonded to the steel body for aggressive cutting and long life on highly abrasive quartz and sintered surfaces.
A concentric shank and controlled grit exposure keep vibration low, so edges come off the machine smooth and need less hand polishing.
Extra working height for thick slabs, deep sink openings and single-setup grooving — no shank rubbing, no re-clamping.
Other head diameters (6–16 mm), grits (30/40 coarse to 60/80 medium) and working lengths can be produced to order.
Typical Applications
- Sink, hob and tap cut-outs in quartz and engineered stone countertops
- Edge trimming and profiling on 20–30 mm slabs
- Drainboard grooves, drip channels and recessed features
- Lettering, logos and relief engraving on stone panels
- Finishing passes on sintered stone, porcelain and ultra-compact surfaces
Technical Specifications
| Model | CBQ10-30 |
|---|---|
| Head diameter (Dia 1) | 10 mm |
| Shank diameter (Dia 2) | 10 mm |
| Diamond section (L 1) | 38 mm |
| Overall length (L 2) | 85 mm |
| Bond type | Brazed diamond grit |
| Grit (standard) | Coarse 30/40 · 60/80 medium on request |
| Recommended speed | 8,000–12,000 rpm |
| Depth of cut | 2–3 mm per pass |
| Cooling | Wet cutting recommended (water); dry with dust extraction |
| Suitable materials | Quartz, granite, quartzite, engineered stone, sintered stone, porcelain |
| Machine | CNC stone router / countertop machining center, 10 mm collet |
FAQ
What materials can the CBQ10-30 cut?
Quartz, granite, quartzite, engineered stone, sintered stone such as Dekton-type slabs, porcelain and other hard, brittle surfaces. For very dense material, reduce depth of cut and keep water on the cutting zone.
Wet or dry cutting?
Both work. Wet cutting is recommended — water cools the diamond layer and clears slurry, which gives longer tool life and a cleaner edge. If you run dry, use effective dust extraction.
Which machines does it fit?
Any CNC stone router or countertop machining center with a 10 mm collet. The 85 mm overall length and 38 mm diamond section reach through thick slabs and deep sink openings.
How long does one bit last?
Tool life depends on material, feed rate and cooling. In quartz countertop work, most shops get consistent cutting through a full production run; the brazed layer keeps cutting as it wears, so speed stays stable until the diamond section is used up.
Can you produce custom sizes or our own brand?
Yes. We manufacture to order: head diameters 6–16 mm, different grits, 10 mm shank or to drawing, and OEM packing with your logo. Send a drawing or sample and we will quote.
What is the difference between this bit and a finger bit?
A finger bit is normally a larger-diameter tool for bulk stock removal in sink openings. The CBQ10-30 is a smaller 10 mm bit for precise deep cutting, grooving and finishing — often used after roughing with a finger bit.
Related Products
Need a quote or a test sample?
Tell us your material, slab thickness and machine — we will recommend the right grit and size.