DEWALT Diamond Cup Wheel DW4777 5 Inch Angle Grinder Disc (Double Row Segments 5/8-11 Threaded Arbor Concrete Masonry Floor Leveling Grinding)
Couldn't load pickup availability
DEWALT DW4777 5" Double Row Diamond Cup Grinding Wheel
The DEWALT DW4777 5-inch double row diamond cup wheel delivers aggressive concrete thinning, epoxy coating removal, and surface leveling on angle grinders outfitted with a 5/8-inch-11 threaded arbor. Manufactured with a high concentration of industrial synthetic diamond segments matrix-bonded to a heat-treated steel core, this 1.2-lb grinding disc maximizes surface contact while resisting rotational fatigue under heavy downward pressure. Featuring precision dynamic balancing to suppress machine vibration, strategically vented debris-clearing relief ports, and dual-track perimeter segments, it rapidly planes concrete slabs, brick joints, and granite borders across commercial masonry and flooring prep jobsites.
Best Used For:
- Concrete Slab Leveling & High-Spot Grinding: Planing down uneven pour seams, curling slab expansion joints, and high concrete ridges prior to flooring underlayment installation.
- Epoxy & Mastic Coating Removal: Stripping thick floor paints, waterproofing membranes, elastomeric coatings, and tile mortar beds cleanly off concrete decks.
- Masonry Joint Smoothing & Stone Shaping: Dressing rough brick perimeters, smoothing poured foundation walls, and beveling decorative granite or hard stone curbing.
Key Performance & Safety Features
- High-Density Diamond Concentration: Formulated with premium synthetic diamond grit to maintain fast cut rates and extended operational life in high-abrasion cured concrete.
- Dual-Row Segment Architecture: Double-ring perimeter layout distributes abrasive contact evenly to create a uniform, gouge-free scratch profile while accelerating stock removal.
- Heat-Treated Structural Steel Core: Resists warping and structural deformation during high-friction, continuous dry surface grinding runs.
- 5/8"-11 Threaded Direct-Mount Arbor: Spun directly onto standard 5/8-11 spindle angle grinders for fast, wrench-tightened hub mounting without loose flange nuts.
- Precision Dynamic Balancing: Computer-balanced wheel body significantly dampens operating chatter and vibration to lessen hand-arm fatigue over extended shifts.
- Airflow & Dust Evacuation Vents: Perforated steel plate draws cooling ambient air across the segments while channeling heavy concrete dust into vacuum shrouds.
What's Included
- (1) DEWALT DW4777 5" Double Row Diamond Cup Wheel with 5/8"-11 Threaded Hub
Technical Specifications
| Manufacturer | DEWALT Industrial Tool Co. |
| Model Number | DW4777 |
| Product Category | Diamond Cup Grinding Wheel |
| Wheel Outer Diameter | 5.0 inches (127.0 mm) |
| Arbor Mounting Thread | 5/8"-11 Threaded Female Hub |
| Segment Configuration | Double Row Continuous Segment Ring |
| Abrasive Media Type | High-Concentration Industrial Synthetic Diamond |
| Wheel Body Substrate | Heat-Treated High-Strength Alloy Steel |
| Grinding Operation | Dry or Wet Surface Grinding and Planing |
| Target Substrates | Cured Concrete, Masonry Block, Brick, Mortar, Granite, Natural Stone |
| Tool Platform Compatibility | Standard 5-Inch Corded & Cordless Angle Grinders / Surface Grinders |
| Total Wheel Net Weight | 1.20 lbs (19.2 oz / 544.3 g) |
Pro-Tip: Pair this cup wheel with a dedicated dust shroud and HEPA vacuum extractor when grinding indoor slabs; maintaining high airflow keeps the double-row segments cooler, preventing diamond glazing and keeping cut speed at its peak.