Description
Diablo DMAMX1180 Rebar Demon 7/8" x 21" SDS-Max 4-Cutter Full-Carbide Head Hammer Drill Bit
Bore deep anchor holes through rebar-reinforced concrete without bit lockups using the Diablo DMAMX1180 Rebar Demon™ 7/8" x 21" SDS-Max 4-Cutter Full-Carbide Head Hammer Drill Bit. Engineered for commercial masonry contractors, structural concrete teams, and mechanical installers, this industrial drill bit eliminates the costly downtime of ruined bits when striking embedded rebar.
Unlike standard two-cutter bits with small brazed carbide inserts that sheer off on steel, the Rebar Demon™ features a solid 4-cutter full-carbide head joined with Tri-Metal Fusion Welding. It withstands intense thermal friction up to 1,800°F—more than double the 800°F threshold where standard bits fail. By taking controlled bites of steel rebar, it reduces operator vibration, prevents binding, and delivers up to 7X longer life in high-strength concrete. With 16 inches of usable flute depth and a self-centering precision tip, it drills round, accurate holes essential for ANSI-approved structural anchor setting.
Key Features:
- Solid 4-Cutter Full-Carbide Head: Drills directly through heavy structural rebar without snapping tips, binding, or shattering teeth.
- Up to 7X Longer Life: Heavy-duty Dura-Carbide construction withstands severe shock and delivers sustained drilling endurance over standard bits.
- Tri-Metal Fusion Welding: Advanced welding process bonds the solid carbide head to the steel shank, resisting thermal breakdown up to 1,800°F.
- Self-Centering Precision Tip: Keeps the bit locked on center to prevent wandering, ensuring round, accurate holes for critical chemical and mechanical anchors.
- Optimized 4-Flute Dust Extraction: Deep flute channels remove concrete dust and pulverized aggregate quickly to keep the hole clean and the bit running cool.
- Standard SDS-Max Shank: Fully compatible with all SDS-Max rotary hammer drills from Milwaukee, Bosch, Hilti, DeWalt, and Makita.
Specifications
| Specification | Details |
| Brand | Diablo Tools (Freud) |
| Series | Rebar Demon™ 4-Cutter Full-Carbide Head |
| Model / MPN | DMAMX1180 |
| UPC | 008925149678 |
| Drill Diameter | 7/8 in. (22.2 mm) |
| Overall Length (OAL) | 21 in. (533 mm) |
| Usable Drilling Length | 16 in. (406 mm) |
| Head Type | Solid 4-Cutter Full-Carbide Head |
| Carbide Technology | Dura-Carbide with Tri-Metal Fusion Welding (Rated to 1,800°F) |
| Shank Type | SDS-Max Drive |
| Flute Geometry | High-Volume 4-Flute Evacuation Design |
| Primary Material Compatibility | Reinforced Concrete with Rebar, Hard Aggregate, Brick, Block, Masonry |
| Anchor Suitability | Meets ANSI specifications for concrete anchor installations |
Frequently Asked Questions
Can this bit drill through structural steel rebar?
Yes. The Diablo DMAMX1180 features a solid 4-cutter full-carbide head engineered specifically to cut through embedded rebar without binding or breaking off cutter tips. It takes small, controlled bites through the steel to prevent bit lockup.
What is the difference between overall length and usable length?
The overall length (OAL) is 21 inches from the tip of the carbide head to the end of the shank. The usable drilling flute depth is 16 inches, allowing you to bore continuous holes up to 16 inches deep into foundations and walls.
Will this bit fit a standard SDS-Plus rotary hammer?
No. This bit uses a heavy-duty SDS-Max shank (approx. 18 mm diameter with 3 open grooves and 2 locking splines) designed for large commercial rotary hammers. It will not fit smaller SDS-Plus chucks.
Does this drill bit produce holes suitable for anchor setting?
Yes. The 4-cutter head design and self-centering tip ensure consistent hole roundness and diameter that meet ANSI standards for chemical epoxy anchors and mechanical expansion anchors.
What makes Tri-Metal Fusion Welding superior?
Standard masonry bits use basic copper brazing that melts and releases the carbide tip around 800°F when striking rebar. Diablo's Tri-Metal Fusion Welding withstands friction heat up to 1,800°F, preventing tip detachment under heavy commercial drilling.
Product Specifications
selling_points: |
✔ Full-Carbide 4-Cutter Head: Powers effortlessly through reinforced concrete and rebar ✔ Extreme Heat Resistance: Withstands up to 1,800°F to deliver 7x longer service life |
category_bullets: |
Rebar Demon 4-cutter full-carbide head engineered to punch through concrete and rebar with extreme durability Tri-metal fusion welding withstands extreme heat up to 1,800°F for up to 7x longer bit life |
