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DEWALT DW4775 double-row diamond cup wheel grinds concrete, masonry, and stone quickly, with high diamond concentration and a 7-inch cutting face.
Categories : tools
SKU : WOR-TOO-540
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The DEWALT DW4775 is a 7-inch double-row diamond cup wheel engineered for aggressive material removal and smoother finishing on concrete and masonry. Its high diamond concentration and large grinding segments with heat-treated steel bodies deliver longer service life and faster stock removal. The double row design gives you both speed and a finer finish compared to single-row wheels.
This wheel fits angle grinders with a 5/8-11 arbor and is rated for speeds up to 8,600 RPM. It’s designed for dry grinding of concrete, masonry, and stone, and can be used to smooth cast edges, remove tile adhesive, or clean mortar joints. Always use a grinder guard and ANSI-approved eye protection.
The DW4775 is best for medium-to-heavy grinding tasks. If you need more surface speed for large floor areas, a 7-inch wheel keeps the grinder moving; for tighter patch work, a 4-inch or 5-inch wheel may be easier to control. The double row segments offer a balance between coarse grinding and smooth finish, making this wheel a solid all-rounder for professional and advanced DIY projects.
Double row segments for faster grinding and a smoother finish.
High diamond concentration extends wheel life and cuts aggressively.
Heat-treated steel body enhances durability and keeps segments stable.
Fits angle grinders with 5/8-11 arbor, up to 8,600 RPM.
Designed for dry concrete, masonry, and stone grinding.
Model: DW4775
Weight: 1.6 lb
Max RPM: 8,600
Diameter: 7 in
Arbor Size: 5/8-11 in
Dimensions: 7 x 7 x 0.5 in
Application: Dry grinding of concrete and masonry
Product Type: Diamond Cup Grinding Wheel
Segment Type: Double Row
Diamond Concentration: High
Seller: Workbench World
MPN: DW4775
A double row wheel like the DW4775 uses two concentric diamond rows, which means more cutting edges in contact with the material. That increases grinding speed and helps the wheel run smoother. Single-row wheels are often used for very heavy grinding where a more open pattern is needed to clear dust. For most concrete and masonry projects, the double row is a practical all-purpose choice.
Let the wheel do the work—don’t press hard. Running at the rated speed and moving at a steady pace prevents glazing and extends diamond life. For large areas, use a dust shroud and vacuum to keep the cutting face clear.
The wheel has a 5/8-11 threaded arbor, which fits most 7-inch angle grinders.
This wheel is designed for dry grinding. Running it wet can cause premature wear and reduce diamond performance.
It is intended for concrete, masonry, and stone. For metal, choose a dedicated metal grinding wheel.
When the diamond segments are worn down close to the steel backing, the wheel will grind slower and may leave more debris. Replace it once the segments are nearly flush with the body.
Grinds concrete fast.
First time using a diamond cup. Cut like butter. Dust was insane.
I've used many diamond wheels and this one is among the best. It chews through concrete quickly and wears evenly. The 5/8-11 arbor fits my grinder without an adapter. I could finish a 10x10 slab in one afternoon. It leaves a smooth enough surface for prep. Definitely worth the money.
