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7 Inch Diamond Blade for Concrete (180mm): Specs & Uses
A 7 inch diamond blade for concrete (180 mm) mounts on large angle grinders and delivers roughly 50 mm of cutting depth — enough to slice pavers, curbs, blocks and small slabs in one or two passes. It is the workhorse size for renovation and site work.
Segmented or Turbo for Concrete?
| Segmented (2.4 mm) | Turbo / wide turbo (2.4 mm) | |
|---|---|---|
| Speed | Fastest | Fast |
| Edge finish | Rough | Smoother |
| Cooling (dry) | Best | Good |
| Best for | Concrete, brick, exposed aggregate | Hard concrete, hard brick, granite mixes |
Specifications
- Diameter: 180 mm (7") — Max RPM 8,600
- Segment: 7/10 mm height, 2.4 mm thickness, 14 segments
- Bore: 22.23/25.4 mm — fits large angle grinders and circular saws
- Wet/dry rated; hot-pressed (premium) or cold-pressed (economy)
Applications
- Cutting concrete pavers, curbs and lintels
- Brick and block walls — openings and chases
- Small demolition and renovation cuts
- Hard brick and engineering masonry (turbo with protective teeth)
Tips for Long Blade Life
- Make two 25 mm passes instead of one 50 mm pass on hard concrete.
- Let the blade spin free for 10 seconds every 30–60 seconds of dry cutting to cool.
- Match bond to material: softer bond for hard concrete, harder bond for abrasive block.
FAQ
How deep can a 7 inch diamond blade cut?
About 50–55 mm on an angle grinder, slightly less with some guards. For deeper cuts step up to a 9" blade or a cut-off saw.
Can a 7 inch diamond blade cut asphalt?
Occasionally, yes — but asphalt is highly abrasive. For regular asphalt work use a dedicated asphalt blade with undercut protection.
Is 180 mm the same as 7 inch?
Effectively yes (7" = 177.8 mm). 180 mm blades fit all 7" grinder guards.
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