Product Description
Milwaukee 4-1/4 in. Diamond Premium Wet Core Bit
Model Number: 48-17-3042
The Milwaukee 48-17-3042 is a 4-1/4 in. Diamond Premium Wet Core Bit — a precision diamond core drilling bit engineered for applications requiring a 4-1/4 in. diameter core hole through cured and reinforced concrete where standard core bit diameters do not provide the required bore size. While 4 in. is the most common round number diameter for concrete core drilling, certain applications specify 4-1/4 in. diameter for specific conduit systems, plumbing fittings, mechanical sleeve hardware, or other components whose outer dimensions require a slightly larger bore diameter than the standard 4 in. to provide proper clearance and sleeve fitting engagement. Milwaukee Diamond Premium Wet Core Bits use only premium-grade diamonds in an engineered segment bond formulated for the demanding combination of cutting speed and segment life required in professional core drilling applications — delivering faster initial cutting speed and better sustained performance through the segment's life compared to standard-grade bits in the same concrete conditions.
Wet cutting with continuous water supply is mandatory for safe, effective diamond core drilling — water cools the diamond segments against the heat generated by the cutting friction, flushes concrete slurry and aggregate particles out of the hole to maintain cutting clearance, lubricates the segment-concrete interface to reduce friction, and provides source-point silica dust suppression required for OSHA crystalline silica exposure compliance. The 4-1/4 in. bit is used with Milwaukee's core drilling system accessories including core barrel extensions for drilling through wall sections that exceed standard barrel depth, and with compatible guide plates for precision hole location in applications where hole position accuracy is critical to the installation. Milwaukee's premium diamond wet core bit lineup spans 3/4 in. through 12 in. in the same segment quality specification for complete project coverage.
For standard 4 in. applications, see Milwaukee part 48-17-3040. For pre-stressed and post-tensioned concrete requiring specialized segment bond chemistry, see Milwaukee's pre-stressed concrete core bit lineup.
Features
- Premium-grade diamond segments for fast cutting and long segment life in demanding concrete
- 4-1/4 in. diameter for specific conduit, sleeve, and fitting clearance requirements
- Wet cutting required for segment cooling, silica dust control, and maximum performance
- Compatible with Milwaukee core drilling accessories and guide plates
- Available 3/4 in. through 12 in. for complete premium wet core drilling system coverage
Specifications
- Diameter: 4-1/4 in.
- Cutting Method: Wet
- Application: Cured Concrete, Reinforced Concrete
- Available Sizes: 3/4 in. through 12 in.
Includes
- (1) Milwaukee 48-17-3042 4-1/4 in. Diamond Premium Wet Core Bit
