Product Description
Milwaukee SDS Max 4-Cutter 7/8 in. x 31 in. x 36 in.
Model Number: 48-20-3949
The Milwaukee 48-20-3949 is an SDS Max rotary hammer drill bit in 7/8 in. diameter with a 31 in. working length and 36 in. overall length — a maximum extended-reach configuration with Milwaukee's four-cutter carbide tip for the deepest structural anchor embedments and thickest through-wall penetrations requiring the SDS Max high-energy platform at the 7/8 in. diameter. The four-cutter tip delivers four active carbide cutting contacts per revolution versus the standard two-cutter, maintaining drilling momentum through the hardest commercial concrete that would slow a two-cutter bit's progress at this large diameter under SDS Max energy delivery. The 36 in. overall length is an extreme deep-reach configuration serving the most demanding structural applications — drilling through the thickest foundation walls, multi-layer construction assemblies, and the longest anchor embedments where no shorter configuration reaches the required depth from a single accessible drill position.
Milwaukee engineers the flute geometry for this extreme diameter-length combination to maintain effective concrete debris transport from the full 31 in. working depth — at this large bore and extended length, the chip volume per revolution is substantial and the debris transport path length is extreme, requiring precise flute optimization to prevent choking that would interrupt production drilling pace on critical structural installations. The SDS Max shank provides the positive anti-rotation locking and maximum impact energy transmission that this extreme deep-drilling configuration demands. This is a specialty bit for the specific structural applications where the 7/8 in. bore and 36 in. overall length are both required simultaneously.
See Milwaukee's complete SDS Max four-cutter catalog for all available diameters and lengths for demanding structural anchor and penetration applications.
Features
- 4-cutter tip for maximum drilling speed in hardest commercial concrete at large bore
- 7/8 in. for specific structural connections between 3/4 in. and 1 in. standard sizes
- 36 in. overall for extreme-depth structural embedments beyond all shorter configurations
- SDS Max for maximum impact energy in the most demanding deep anchor drilling
- Optimized fluting for debris evacuation through full 31 in. working depth
Specifications
- Diameter: 7/8 in.
- Working Length: 31 in.
- Overall Length: 36 in.
- Tip: 4-Cutter Carbide
- Shank: SDS Max
Includes
- (1) Milwaukee 48-20-3949 SDS Max 4-Cutter 7/8 in. x 31 in. x 36 in.
