Product Description
Milwaukee SDS+ Bit 7/8 in. x 18 in.
Model Number: 48-20-7075
The Milwaukee 48-20-7075 is an SDS+ rotary hammer drill bit in 7/8 in. diameter with an 18 in. overall length — the extended ultra-deep-reach version of the 7/8 in. SDS+ bit for through-wall penetrations, deep structural anchor installations, and large-diameter drilling applications where the working depth requirements exceed what standard and mid-length configurations can achieve. The 7/8 in. diameter is used for large structural anchors, specific through-bolt fastener sizes, and specialty concrete fastening systems where the bore must be precisely 7/8 in. rather than the adjacent 3/4 in. or 1 in. sizes. Milwaukee 44 Magnum SDS+ bits feature carbide vacuum-brazed to heat-treated steel shanks using the vacuum brazing process that creates the metallurgical bond for positive tip retention under sustained rotary hammer impact loading at this large diameter across the full 18 in. working length.
The 18 in. overall length provides the reach for through-wall penetrations in thick CMU construction with additional finish layers, structural anchor installations where engineering specifications call for long embedment depths for the highest pull-out load ratings, and drilling positions where the SDS+ hammer must be positioned well away from the drilling surface due to structural elements that block closer placement. At 7/8 in. diameter and 18 in. length, Milwaukee's flute engineering must maintain effective concrete debris evacuation from the base of the hole through the full depth — the larger flute volume at 7/8 in. provides better debris transport capacity per unit length than smaller diameters, and the flute pitch is optimized for consistent hole evacuation throughout the full working depth. The SDS+ shank provides tool-free engagement in all SDS+ rotary hammers. For the most demanding hard concrete conditions at this diameter and depth, Milwaukee's SDS Max lineup provides higher-energy impact delivery.
See Milwaukee's complete SDS+ concrete bit catalog for all available lengths and configurations at the 7/8 in. diameter.
Features
- Carbide tip vacuum-brazed to heat-treated steel shank for large-diameter deep drilling
- 7/8 in. diameter for large structural anchors and specific through-bolt applications
- 18 in. overall length for through-wall CMU and deep structural embedment drilling
- Optimized fluting for continuous debris evacuation through full 18 in. working depth
- SDS+ shank for tool-free engagement on all SDS+ rotary hammers
Specifications
- Diameter: 7/8 in.
- Overall Length: 18 in.
- Shank: SDS+
- Tip: Carbide, Vacuum-Brazed
Includes
- (1) Milwaukee 48-20-7075 SDS+ Bit 7/8 in. x 18 in.
