Product Description
Milwaukee SDS Max 4CT 1 in. x 12 in. x 17 in. Rotary Hammer Bit
Model Number: 48-20-3953
The Milwaukee 48-20-3953 is an SDS Max 4-Cutter (4CT) Rotary Hammer Bit in 1 in. diameter with a 12 in. working length and 17 in. overall length — a large-diameter premium heavy-duty SDS Max bit combining the four-cutter tip technology, highest-energy hammer platform, and extended working depth for the most demanding structural anchor drilling applications in hard commercial concrete. The 1 in. diameter is the large-diameter anchor size for the heaviest structural connections — 7/8 in. wedge anchors, 7/8 in. sleeve anchors, and large-format adhesive anchors used in structural steel base plate connections, heavy equipment foundations, seismic bracing installations, and overhead structure attachments where the highest available working load ratings are required by engineering specifications. Milwaukee's 4CT four-cutter tip delivers four carbide cutting contacts per revolution versus the standard two-cutter geometry, doubling cutting speed per unit of rotation and distributing wear across more carbide surface area for extended bit life in the hard high-strength concrete where large-diameter SDS Max drilling is most commonly performed.
The SDS Max shank transmits the maximum impact energy available in rotary hammer tooling to the four-cutter carbide tip — the combination of SDS Max energy delivery and 4CT four-cutter efficiency produces the fastest available drilling speed in hard commercial concrete for the 1 in. diameter. The 17 in. overall length provides the extended reach for structural installations in thick concrete sections, through-penetrations in masonry walls with additional thermal or finish layers, and drilling positions where the SDS Max hammer must be positioned away from the drilling face due to structural interference. Optimized flute engineering maintains continuous concrete debris evacuation through the full 12 in. working depth for uninterrupted production drilling at this large diameter and depth combination.
See Milwaukee's complete SDS Max 4CT lineup for all available diameters and lengths in the premium four-cutter format for the most demanding heavy structural concrete drilling applications.
Features
- SDS Max 4CT four-cutter tip for maximum speed and life in hard structural concrete
- Four cutting edges double contacts per revolution vs. standard 2-cutter SDS Max bits
- 1 in. diameter for 7/8 in. structural anchors in the heaviest connection applications
- 17 in. overall length for thick sections, deep embedments, and offset drill positions
- Optimized fluting for debris evacuation through full 12 in. working depth
Specifications
- Diameter: 1 in.
- Working Length: 12 in.
- Overall Length: 17 in.
- Shank: SDS Max
- Tip: 4CT Four-Cutter Carbide
Includes
- (1) Milwaukee 48-20-3953 SDS Max 4CT 1 in. x 12 in. x 17 in. Rotary Hammer Bit
