Diablo Diamond Cup Wheel DMACW0450 4-1/2 Inch L-Segment 5/8-11 Thread (13280 Max RPM Dry Concrete Masonry Surface Grinding Disc)

Diablo DMACW0450 4-1/2-Inch L-Segment Diamond Rim Cup Wheel

The Diablo DMACW0450 4-1/2-Inch Diamond Rim Cup Wheel executes rapid concrete surface preparation, thinset removal, and masonry leveling up to 13,280 RPM. Formulated with industrial-grade diamond grit embedded across L-shaped perimeter segments, this dry-grinding disc levels uneven surfaces without leaving deep swirl marks or substrate gouges. The heavy-duty steel body features extra-wide ejection slots that funnel aggregate dust directly toward angle grinder vacuum shrouds to decrease thermal friction and air resistance.

Best Used For:

• Concrete Floor Surface Preparation: Flattening uneven expansion joints, high spots, and form marks on cured concrete slabs prior to epoxy coating.
• Mastic & Coating Stripping: Grinding away hardened tile thinset, waterproofing membranes, and floor adhesives without segment loading.
• Masonry Edge Dressing: Smoothing rough-cut stone edges, exposed aggregate steps, and structural concrete masonry block faces.

Key Performance & Safety Features

• Anti-Gouge L-Segment Geometry: L-shaped diamond blocks maintain continuous surface contact to prevent gouging and eliminate circular swirl blemishes.
• Industrial Diamond Matrix: High-density synthetic diamond concentration ensures consistent abrasive exposure across demanding aggregate applications.
• Integrated 5/8"-11 Threaded Arbor: Direct-thread mounting hub spins onto standard 4-1/2-inch angle grinder output shafts without loose flange nuts.
• Extra-Wide Dust Extraction Vents: Open-body air channels maximize dust exhaust flow to reduce abrasive friction under vacuum collector shrouds.
• 13,280 Max RPM Rating: Dynamically balanced steel plate operates stably at high spindle speeds without harmonic vibration.

What's Included

• (1) Diablo DMACW0450 4-1/2-Inch L-Segment Diamond Rim Cup Wheel with 5/8"-11 Thread

Technical Specifications

Pro-Tip: Keep the angle grinder oriented almost flat with a slight 5-degree lead angle and move in wide, sweeping arcs; letting the diamond segments cut under the weight of the grinder alone avoids glazing the diamond matrix and prevents surface dips.