Product Description
Milwaukee 4-1/2 in. Dry Core Masonry Bit
Model Number: 48-17-0045
The Milwaukee 48-17-0045 is a 4-1/2 in. Dry Core Masonry Bit — a large-diameter diamond core drilling bit engineered for dry cutting through concrete masonry units, cinder block, concrete brick, and standard concrete without the water supply requirement of wet core drilling. Milwaukee Dry Core Bits use premium diamonds in a dry-cut specific segment bond formulation that provides the heat resistance and self-cooling properties needed for sustained cutting performance in dry operation where the segment bond chemistry must manage cutting interface temperature without water-assisted cooling. The 4-1/2 in. diameter is specified for large conduit bundle penetrations, major mechanical and HVAC sleeve installations requiring greater than standard 4 in. bore, and structural penetrations where specific sleeve hardware or fitting dimensions require the 4-1/2 in. bore specification rather than the adjacent 4 in. standard size.
Dry cutting eliminates the water supply logistics that make wet core drilling impractical in many field locations — above-grade wall penetrations where water rundown damages finishes below, locations without convenient water access, and applications where water slurry disposal is problematic. For best performance and OSHA crystalline silica compliance, always pair dry core bit use with a vacuum extraction system that removes concrete dust at the point of generation throughout the drilling operation — dust extraction protects the operator and also prevents accumulated dust at the cutting face from contributing to segment overheating in dry drilling conditions. Milwaukee's dry core masonry bit lineup covers 1 in. through 6 in. for complete dry masonry core drilling diameter coverage.
For wet cutting applications where water can be managed, Milwaukee's Diamond Premium Wet Core Bit lineup provides maximum cutting speed and segment life with the benefit of continuous water cooling.
Features
- Diamond dry-cut segment specification — no water supply required for CMU and masonry drilling
- 4-1/2 in. diameter for large conduit bundles and specific sleeve hardware bore requirements
- Ideal where water supply or slurry management makes wet cutting impractical
- Use with vacuum extraction for OSHA silica compliance and maximum segment life
- Available 1 in. through 6 in. for complete dry masonry core drilling coverage
Specifications
- Diameter: 4-1/2 in.
- Cutting Method: Dry (No Water Required)
- Application: CMU Block, Cinder Block, Concrete Brick, Standard Concrete
- Available Sizes: 1 in. through 6 in.
Includes
- (1) Milwaukee 48-17-0045 4-1/2 in. Dry Core Masonry Bit
