Product Description
Milwaukee 4 in. Dry Core Masonry Bit
Model Number: 48-17-0040
The Milwaukee 48-17-0040 is a 4 in. Dry Core Masonry Bit — a large dry-cut core bit for cutting through concrete masonry units, cinder block, concrete brick, and standard concrete for major conduit sleeve installations, large mechanical equipment connections, and structural penetrations where the 4 in. bore provides clearance for 3 in. conduit systems and large mechanical fittings without the need for water in the cutting operation. Milwaukee Dry Core Bits use premium diamonds in a dry-cut specific segment bond formulated for the thermal management needed for sustained dry operation without water cooling. At the 4 in. diameter — one of the larger dry core sizes in Milwaukee's lineup — the dry-cut segment specification must manage the higher heat generation of the larger bore compared to smaller sizes, requiring careful drilling technique, consistent vacuum extraction, and periodic bit cooling pauses to maintain segment integrity during sustained dry cutting at this large bore.
Dry cutting at 4 in. provides practical advantages in occupied buildings where water management near finished spaces and electrical systems is challenging or hazardous, in equipment rooms where wet slurry cleanup is unacceptable, and in outdoor applications where water supply and drainage logistics complicate wet cutting. OSHA crystalline silica compliance during dry core drilling at this large bore requires robust vacuum extraction — the 4 in. bore generates substantial concrete dust volume that exceeds the extraction capacity of inadequate systems. Milwaukee's dry core range covers 1 in. through 6 in. for complete dry masonry core drilling coverage across all standard penetration sizes.
For applications where wet cutting can be managed, Milwaukee's Diamond Premium Wet Core Bit lineup provides maximum cutting speed at this large diameter.
Features
- Diamond dry-cut segment for 4 in. masonry drilling without water supply
- 4 in. for 3 in. conduit sleeves and major mechanical equipment penetrations
- Eliminates wet cutting logistics in occupied spaces and equipment rooms
- Use robust vacuum extraction for OSHA silica compliance at 4 in. bore dust volume
- Available 1 in. through 6 in. for complete dry masonry core drilling coverage
Specifications
- Diameter: 4 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 48-17-0040 4 in. Dry Core Masonry Bit
