HIGH-PERFORMANCE DRILLS
TECHNICAL INFORMATION
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Basics of... High Performance Drills
Materials
Vanadium HSS
- 3% Vanadium
- Abrasive wear resistance for increased toughness & tool life
- In addition to general applications, provides long life when drilling materials like stainless steels & high silicon aluminums
Cobalt (M35 & M42)
- Provides better wear resistance, higher hardness and toughness than HSS
- Most cost effective for machining cast iron, heat treated steels and titanium alloys
Powdered Metal (PM)
- A cost effective alternative to solid carbide, powdered metal is tougher and less prone to breakage
- Provides superior wear life in materials < 30HRC, as well as highly abrasive materials like high-silicon aluminums
Solid Carbide & Carbide-Tipped
- For high-performance applications; Carbide can run faster and withstand higher temperatures while providing good wear resistance
- Carbide is brittle and is best suited for abrasive and tough-to-machine materials such as cast iron, non-ferrous alloys, glass, plastics and composites
- Carbide-Tipped offers many of the advantages of solid carbide drills at a reduced cost, especially on the larger diameter drills
Surface Treatments
Polished (Bright Finish)
- Polished drills do not have a coating, which helps increase chip flow in soft materials
- For use in aluminum, wood and plastic
TiN (Titanium Nitride - Gold Color)
- Built to take on the tough job of cutting through steel rebar in concrete structures
- Have replacement heads and shanks
- Come in complete sets
TiAlN (Titanium Aluminum Nitride - Violet Black Color)
- Cut like a drill, gradually grinding the building material to create a hole
- Require constant pressure from the user
- Are less productive than hammer bits
FIREX®
- A Guhring exclusive, alternating ultra-thin coating layers combine the performance benefits of single layer coatings
- Universal applicability of TiN, hardness and heat-resistance of TiAlN and shock resistance of TiCN
Drill Points
Styles
- 130° Point is common on high performance parabolic drills, disperses heat well and helps keep drill straight in deeper holes
- 135° Split Point is self-centering, it will not walk or slide when starting a hole
- 140° Point is common on high performance carbide drills, and helps get the cutting edge into tough materials quickly