SIMPSONSKU: MDMX12515Q

Simpson SDS-Max Quad-Head Drill Bit 1-1/4 in. x 15 in. Carbide MDMX12515Q


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Product Features

  • Uniformly brazed carbide inserts result in longer bit life
  • Most bits contain a centering tip that facilitates easy spot drilling
  • Chromium-nickel-molybdenum steel alloy body ensures hammering quality and extended service life
  • Heat-treatment procedures and shot-peened finish increase surface hardness, drilling speed, reduces drill bit wear and improves resistance to bending forces
  • Drill bits conform to ANSI Standard B212.15
  • Chisel-shaped drill-bit head penetrates the material and directs concrete dust into the multi-flute spiral
  • Patented, high-volume, multi-flute spiral quickly channels concrete dust from the hole to improve drilling speed
  • 4 x 90° head geometry crushes through rebar and prevents sticking in reinforced concrete

Product Description

Key Features

  • Uniformly Brazed Carbide Inserts: Ensures consistent, long-lasting cutting performance and extended bit life on tough substrates.
  • Self-Centering Tips: Provides accurate hole placement right from the first point of contact, reducing walk-off and improving precision.
  • Chromium-Nickel-Molybdenum Steel Alloy Body: Delivers exceptional hammering quality and extended service life under heavy-duty conditions.
  • Heat-Treatment & Shot-Peened Finish: Increases surface hardness and drilling speed, reduces drill bit wear, and improves resistance to bending forces.
  • High-Volume, Multi-Flute Spiral: Quickly channels concrete dust from the hole to continuously improve drilling speed and reduce clogging.
  • 4 x 90 deg. Quad-Head Geometry: Crushes through rebar and actively prevents sticking in reinforced concrete, maintaining forward progress even in heavily reinforced slabs.
  • Patented Reinforced Core Flute: Maximizes energy transfer from rotary hammer to drill tip for faster, more efficient drilling.
  • Proprietary Flute Geometry: Reduces vibration and optimizes impact energy transfer, lowering operator fatigue and noise exposure.
  • ANSI Standard B212.15 Compliant: Drill bit conforms to ANSI Standard B212.15 for consistent dimensional accuracy and quality assurance.
  • SDS-Max Shank: Compatible with all SDS-max rotary hammers for a secure, tool-free bit change and reliable torque transfer.

Specifications

  • Model Number (MPN): MDMX12515Q
  • Brand: Simpson Strong-Tie
  • Shank Type: SDS-max Shank
  • Head Type: Quad Head - 4x Drill Bit
  • Diameter: 1-1/4 in.
  • Overall Length: 15 in.
  • Drilling Depth: 10 in.
  • Material: Hardened Steel with Carbide Tip
  • Standards Compliance: ANSI Standard B212.15
  • Country of Origin: Germany (DE)

Approved Applications

  • Drilling into concrete and reinforced concrete with rebar present
  • High-speed, high-impact rotary hammer drilling requiring accurate hole placement
  • Applications where concrete dust evacuation is critical to maintaining drilling speed
  • Heavy-duty construction and demolition drilling using SDS-max rotary hammers

Frequently Asked Questions

What type of rotary hammer is this drill bit compatible with?
This drill bit features an SDS-max shank, making it compatible with all SDS-max rotary hammers. The SDS-max shank provides a secure, tool-free bit change and reliable torque transfer during heavy-duty drilling applications.
Can this drill bit be used in reinforced concrete containing rebar?
Yes. The quad-head design features a 4 x 90 deg. head geometry specifically engineered to crush through rebar and prevent sticking in reinforced concrete. This allows the bit to maintain forward progress even in heavily reinforced slabs.
What is the maximum drilling depth this bit can achieve?
This bit has a drilling depth of 10 inches. The overall length of the bit is 15 inches, and the diameter is 1-1/4 inches.
What materials and quality standards are used in the construction of this drill bit?
The bit body is made from a chromium-nickel-molybdenum steel alloy for extended service life and hammering quality. It features uniformly brazed carbide inserts for longer bit life, and undergoes heat-treatment procedures and a shot-peened finish to increase surface hardness and resistance to bending forces. The drill bit also conforms to ANSI Standard B212.15 for consistent dimensional accuracy and quality assurance.

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