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Diamond Blade for Granite: Turbo Blades, Specs & Cutting Tips
A diamond blade for granite must combine a hard-material bond with an aggressive rim: granite is one of the hardest common stones and will glaze or slow a blade designed for marble or tile. Turbo and turbo-with-protective-teeth blades are the professional standard for granite.
Best Blade Types for Granite
| Blade type | Granite performance |
|---|---|
| Turbo / wide turbo | Fast, smooth — the granite standard for 105–230 mm |
| Turbo with protective teeth | High-speed professional cutting, core protection against undercutting |
| Thin turbo | Chip-free slab work, stone slabs of granite |
| Laser-welded granite blade (350–450 mm) | Walk-behind/flat saw: fast, clean, long service life, free chipping |
Specifications
| Diameter | Type | Segment | Bore | Machine |
|---|---|---|---|---|
| 105–125 mm (4–5") | Turbo / thin turbo | 7/10 mm | 20/22.23 mm | Angle grinder |
| 150–230 mm (6–9") | Turbo, turbo + protective teeth | 7/10 mm | 22.23/25.4 mm | Grinder, marble saw, masonry saw |
| 350–450 mm (14–18") | Laser-welded granite blade | 10/12/15 mm | 25.4/27/50 mm | Walk-behind saw, flat saw |
Cutting Tips
- Use multiple shallow passes (10–15 mm) rather than one deep pass on thick granite.
- Wet cutting keeps the blade sharp and the stone cool; dry cutting needs cooling breaks.
- Protective-teeth blades resist steel-core erosion when cutting abrasive granite mixes.
- If the blade glazes (polishes instead of cuts), dress it on an abrasive block or soft brick.
FAQ
Why is my diamond blade not cutting granite?
Usually a glazed bond: the metal matrix is too hard and worn diamonds are not being released. Dress the blade, or switch to a granite-specific blade with a softer, faster-wearing bond.
Turbo or segmented for granite?
Turbo. Granite's hardness favors the turbo rim's continuous contact and better finish; segmented rims chip granite edges and wear unevenly.
How many meters can a granite blade cut?
A quality hot-pressed 115 mm turbo blade typically delivers 30–80 linear meters in granite depending on stone hardness and technique; laser-welded 350 mm blades far more.
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