Product Description
Milwaukee 4-1/2 in. Pre-Stressed Concrete Wet Diamond Core Bit
Model Number: 48-17-1045
The Milwaukee 48-17-1045 is a 4-1/2 in. Pre-Stressed Concrete Wet Diamond Core Bit — engineered specifically for drilling through pre-stressed and post-tensioned concrete in parking structures, bridges, and elevated structural decks where standard and premium core bits experience accelerated segment wear from the extreme hardness of high-strength pre-stressed concrete. The 4-1/2 in. diameter serves large mechanical equipment connections, major HVAC ductwork sleeve installations, and structural access openings through pre-stressed slabs where this large bore is required for the conduit or ductwork system being installed. Milwaukee's specialized pre-stressed concrete segment bond maintains cutting effectiveness through full-depth penetrations in these extreme materials, providing meaningful segment life extension over standard premium bits at this large, heat-intensive diameter where the combination of extreme concrete hardness and large cutting face area generates the highest drilling heat of standard core drilling operations.
Wet cutting with abundant, continuous water supply is absolutely critical at 4-1/2 in. diameter in pre-stressed concrete — the very high heat generated at the cutting interface demands aggressive water cooling throughout every drilling cycle to maintain segment integrity and prevent premature segment glazing that would stop cutting entirely. Water simultaneously flushes the substantial concrete slurry volume, maintains cutting clearance, lubricates the segment-concrete interface, and provides OSHA crystalline silica dust suppression. On parking structure and bridge projects requiring many large penetrations through pre-stressed sections, the pre-stressed bit specification's extended segment life directly reduces bit consumption and total project drilling cost. See Milwaukee's complete pre-stressed concrete core bit range for all available diameters from 1 in. through 6 in.
Features
- Pre-stressed concrete segment bond for extreme high-strength elevated structural systems
- 4-1/2 in. for major mechanical penetrations and large HVAC sleeves in pre-stressed slabs
- Extended segment life vs. standard premium bits at this large heat-intensive diameter
- Abundant continuous wet cutting critical for segment cooling at 4-1/2 in. bore
- Available in multiple diameters — 1 in. through 6 in. for complete project coverage
Specifications
- Diameter: 4-1/2 in.
- Cutting Method: Wet
- Application: Pre-Stressed Concrete, Post-Tensioned Concrete, High-Strength Elevated Decks
Includes
- (1) Milwaukee 48-17-1045 4-1/2 in. Pre-Stressed Concrete Wet Diamond Core Bit
