Milwaukee 48-20-7498 MX4™ SDS PLUS 4-Cutter Rotary Hammer Bit
The Milwaukee 48-20-7498 MX4™ SDS PLUS rotary hammer drill bit is engineered for high-performance drilling in reinforced concrete, masonry, and structural materials. Featuring a solid carbide head with quad cutting edges, this bit offers improved durability and reduced bit failure when encountering rebar or dense aggregate.
Designed for SDS PLUS rotary hammer tools, the 4-cutter geometry minimizes lock-up in rebar while maintaining precise hole formation. Variable flute widths efficiently evacuate debris, reducing internal friction and allowing for faster drilling and increased runtime in cordless tools.
Key Features
- Solid Head Carbide: Full-head design improves impact resistance and extends bit life in hard material
- 4-Cutter Geometry: Enhances rebar handling while maintaining consistent bore diameter
- Centering Tip: Optimized for spot drilling and accurate starts in concrete and embedded metal
- Rebar Guard: Reinforced cutting edges reduce head damage when striking rebar
- Variable Flute Design: Improves dust removal and thermal control for increased hole count per charge
- Wear Mark Indicator: Indicates when bit no longer meets ANSI tolerance for anchor hole accuracy
Technical Specifications
- Shank Type: SDS PLUS
- Cutter Type: 4-cutter solid carbide head
- Applications: Concrete, masonry, rebar-embedded material, metal deck
- Standards: ANSI-compliant wear indicator for anchor installations
- Availability: Offered in single units, kits, and contractor bulk packs
Application Guidance
This bit is suited for professional concrete drilling tasks, including anchor setting, conduit pathways, and rebar-penetration drilling. Use with SDS PLUS-compatible rotary hammer drills operating within recommended RPM and impact force specifications. Avoid prolonged use on steel to prevent premature wear.
