Product Description
Milwaukee 4 in. Pre-Stressed Concrete Wet Diamond Core Bit
Model Number: 48-17-1040
The Milwaukee 48-17-1040 is a 4 in. Pre-Stressed Concrete Wet Diamond Core Bit — a specialized diamond core drilling bit engineered specifically for the extra hardness, density, and abrasiveness of pre-stressed and post-tensioned concrete applications where standard diamond core bits wear prematurely and fail to maintain acceptable drilling performance. Pre-stressed and post-tensioned concrete uses high-strength steel cables or tendons maintained under significant tension within the concrete matrix prior to and during service — this manufacturing process produces a concrete matrix that is substantially harder, denser, and more abrasion-resistant than standard cured unreinforced concrete, and the higher hardness wears through standard-grade diamond segments dramatically faster than the same segments perform in standard concrete applications. Milwaukee's pre-stressed concrete core bit specification uses an engineered diamond segment bond formulation that provides a controlled, self-renewing diamond exposure rate in the harder concrete matrix — as the bond material in contact with the concrete surface wears, it continuously exposes fresh diamond cutting points at the segment's working face rather than glazing over, maintaining cutting speed through the segment's full life.
The 4 in. diameter is a commonly used penetration size for conduit sleeves, plumbing rough-in, and mechanical equipment connections through pre-stressed concrete slabs and walls — the 4 in. diameter provides adequate clear bore for standard conduit and pipe sizes while creating the minimum practical core hole that preserves the structural integrity of pre-stressed concrete members, which must not be cored through tendon zones without engineering review. Wet cutting provides the essential water cooling for diamond segments cutting through hard pre-stressed concrete, where the heat generated at the cutting interface is higher than in standard concrete drilling due to the increased hardness and density of the material — without continuous water flow, segments overheat rapidly and glaze over in pre-stressed concrete even when performing acceptably in standard concrete applications. This bit is available in sizes from 1 in. through 6 in. to cover the full range of penetration diameters needed in pre-stressed and post-tensioned concrete construction.
For standard cured unreinforced concrete applications, Milwaukee's standard Diamond Wet Core Bit lineup provides a more economical option — the pre-stressed concrete specification provides value only in the more demanding reinforced and pre-stressed applications where its specialized segment bond delivers superior performance.
Features
- Pre-stressed concrete segment specification — self-renewing diamond exposure in hard concrete matrix
- Maintains cutting speed through full segment life in pre-stressed and post-tensioned concrete
- Wet cutting required — prevents rapid segment glazing in dense pre-stressed concrete
- 4 in. diameter for conduit, plumbing, and mechanical penetrations in pre-stressed slabs
- Available 1 in. through 6 in. for complete pre-stressed concrete penetration coverage
Specifications
- Diameter: 4 in.
- Application: Pre-Stressed and Post-Tensioned Concrete
- Cutting Method: Wet
- Available Sizes: 1 in. through 6 in.
Includes
- (1) Milwaukee 48-17-1040 4 in. Pre-Stressed Concrete Wet Diamond Core Bit
