Product Features
Product Description
Key Features
- Uniformly Brazed Carbide Inserts: Delivers consistent bonding across all cutting edges, resulting in longer bit life and sustained cutting performance.
- Self-Centering Tips: Ensures accurate hole placement from the very first strike, reducing the risk of bit walking on hard surfaces.
- Chromium-Nickel-Molybdenum Steel Alloy Body: A premium alloy construction that ensures exceptional hammering quality and an extended service life under heavy-duty use.
- Heat-Treatment & Shot-Peened Finish: Specialized heat-treatment procedures and a shot-peened finish increase surface hardness, improve drilling speed, reduce drill bit wear, and improve resistance to bending forces.
- ANSI Standard B212.15 Compliant: Drill bit conforms to ANSI Standard B212.15, meeting precise industry tolerance requirements.
- High-Volume, Multi-Flute Spiral: Quickly channels concrete dust from the hole to improve drilling speed and prevent clogging during operation.
- 4 x 90 deg. Quad-Head Geometry: Crushes through rebar and prevents sticking in reinforced concrete, reducing downtime and improving efficiency.
- Patented Reinforced Core Flute: The high-volume, double-helix design maximizes energy transfer from hammer to bit tip for optimized impact performance.
- Proprietary Flute Geometry: Reduces vibration and optimizes impact energy transfer from the rotary hammer, enhancing drilling speed and durability while reducing noise and operator fatigue.
Specifications
- Specification: Detail
- Model Number: MDMX11221Q
- Brand: Simpson Strong-Tie
- Shank Type: SDS-max Shank
- Head Type: Quad Head - 4x Drill Bit
- Diameter: 1-1/8 in.
- Overall Length: 21 in.
- Drilling Depth: 17 in.
- Material: Hardened Steel (Chromium-Nickel-Molybdenum Steel Alloy Body)
- Tip Material: Carbide
- Standard Compliance: ANSI Standard B212.15
- Country of Origin: Germany (DE)
Approved Applications
The Simpson Strong-Tie MDMX11221Q S
Frequently Asked Questions
- What shank type does this drill bit use, and which tools is it compatible with?
- This drill bit features an SDS-max shank, making it compatible with SDS-max rotary hammers. The SDS-max shank system is designed for heavy-duty rotary hammer tools and ensures secure bit retention during high-impact drilling operations.
- What is the drilling depth and overall length of this bit?
- This bit has an overall length of 21 inches and a maximum drilling depth of 17 inches. The diameter is 1-1/8 inches, making it well suited for larger-diameter anchor holes in concrete and reinforced concrete applications.
- Can this bit drill through rebar in reinforced concrete?
- Yes. The quad-head design features a 4 x 90 deg. head geometry specifically engineered to crush through rebar and prevent the bit from sticking in reinforced concrete. This reduces downtime and keeps drilling operations moving efficiently even in heavily reinforced substrates.
- What materials and standards govern the construction of this drill bit?
- The bit body is constructed from a chromium-nickel-molybdenum steel alloy, which provides exceptional hammering quality and extended service life. Uniformly brazed carbide inserts are used for the cutting edges to ensure longer bit life. The bit also undergoes heat-treatment procedures and a shot-peened finish to increase surface hardness and resistance to bending forces. It conforms to ANSI Standard B212.15, meeting precise industry tolerance requirements.
Reviews
FAQs
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