Diablo Cut Off Disc DMADST0400 4 Inch (Segmented Turbo Diamond Blade 15250 RPM 7/8 Inch Arbor Concrete Rebar Brick Block Masonry Cutting)

Diablo DMADST0400 4-Inch Segmented Turbo Diamond Masonry Cut-Off Disc

The Diablo DMADST0400 4-Inch Segmented Turbo Diamond Masonry Cut-Off Disc is a heavy-duty abrasive wheel engineered to execute high-speed wet or dry cuts in cured concrete, rebar-reinforced concrete, brick, and cinder block. Operating at rotational speeds up to 15,250 RPM with a 0.094-inch (2.4mm) kerf thickness and multi-arbor compatibility (7/8-inch, 20mm, and 5/8-inch), this segmented turbo rim disc features 60% taller diamond segments bonded to a vibration-absorbing hardened steel core. Designed for compact handheld angle grinders and mini circular saws, this specialty blade delivers up to 30% faster cuts and 4X longer service life, solving segment loss, blade wobble, and slow penetration issues across commercial masonry jobsites.

Best Used For:

• Reinforced Concrete & Rebar Cutting: Slicing through cured concrete slabs and thin embedded steel rebar without segment stripping or thermal glazing.
• Brick & Cinder Block Wall Modifications: Trimming concrete masonry units (CMU), clay brick, and stone block to exact dimensions for wall penetration.
• Small Angle Grinder Masonry Prep: Executing rapid dry scoring passes or wet mortar joint raking using standard 4-inch angle grinders.

Key Performance & Safety Features

• 60% Taller Diamond Segments: Extended segment height with high-density industrial diamonds provides up to 4X longer life than standard blades.
• SPEED-Edge Slot Turbo Rim Geometry: Specialized slot design reduces harmonic vibration to deliver up to 30% faster cutting speeds in hard masonry.
• Vibration-Dampening Hardened Steel Core: Heavy-duty core plate absorbs operational shocks to maintain true, chatter-free cuts under severe loads.
• Multi-Arbor Adapter System: Universal center arbor fits 7/8-inch drive shafts and includes reduction bushings for 20mm and 5/8-inch spindles.
• Wet & Dry Cutting Performance: Formulated bond matrix permits uninhibited operation during dry jobsite cuts or water-cooled wet slicing.

What's Included

• (1) Diablo DMADST0400 4 in. Segmented Turbo Diamond Masonry Cut-Off Disc
• (1) 20mm Arbor Adapter Bushing
• (1) 5/8 in. Arbor Adapter Bushing

Technical Specifications

Pro-Tip: Avoid twisting or bending the blade inside deep masonry cuts; keeping the disc aligned straight prevents arbor bushing wear and maintains even diamond segment exposure.