Product Description
Milwaukee 2-1/2 in. Dry Core Masonry Bit
Model Number: 48-17-0025
The Milwaukee 48-17-0025 is a 2-1/2 in. Dry Core Masonry Bit — a diamond core drilling bit engineered for drilling clean, accurately-sized holes through concrete masonry units (CMU), cinder block, concrete brick, and standard-strength cured concrete without the water supply requirement of wet core drilling bits. Milwaukee Diamond Dry Core Bits are manufactured with premium-quality diamond segments using a dry-cutting-specific segment bond formulation that provides the heat resistance and self-cooling characteristics needed to maintain cutting performance in dry operation — where the absence of water cooling means the diamond segment bond must manage heat generated at the cutting interface through material properties rather than water cooling. The dry cutting capability is the primary functional advantage of this bit type for contractors who need to drill core holes in locations where water supply for wet drilling is not available, where water damage to surrounding materials or electrical systems prohibits wet drilling, or where OSHA silica dust compliance requires dry cutting with vacuum extraction rather than wet slurry control.
The 2-1/2 in. diameter is a commonly specified hole size for electrical conduit sleeves, plumbing penetrations, HVAC sleeve installations, and mechanical penetrations through CMU block and masonry walls — it provides adequate clear opening for standard conduit and pipe sizes with the minimum necessary hole diameter that preserves the structural integrity of the masonry unit. Milwaukee's dry core bit lineup covers sizes from 1 in. through 6 in. to address the full range of penetration diameters required in CMU and concrete masonry construction. For best performance and maximum diamond segment life, dry core bits should be used with a vacuum extraction attachment that removes concrete dust continuously during drilling — this protects both the operator from silica dust exposure and the diamond segments from excessive heat buildup from dust accumulation at the cutting face.
For wet cutting applications in dense, high-strength, or reinforced concrete where wet slurry control is feasible, Milwaukee's Diamond Wet Core Bit lineup provides maximum cutting speed and segment life with the additional cooling benefit of continuous water flow.
Features
- Diamond dry-cut segments — no water supply required for CMU block and masonry drilling
- Ideal where water damage risk, water supply limitation, or wet slurry prohibits wet drilling
- 2-1/2 in. diameter for conduit, plumbing, and HVAC sleeve penetrations in masonry walls
- Use with vacuum extraction for OSHA silica compliance and maximum segment life
- Available 1 in. through 6 in. for complete masonry core drilling coverage
Specifications
- Diameter: 2-1/2 in.
- Cutting Method: Dry (No Water Required)
- Application: CMU Block, Cinder Block, Concrete Brick, Standard Cured Concrete
- Available Sizes: 1 in. through 6 in.
Includes
- (1) Milwaukee 48-17-0025 2-1/2 in. Dry Core Masonry Bit
