Page 586 - Iscar

USER GUIDE
SOLID CARBIDE DRILLS

3 Flute Solid Carbide Drills

1 3 flute drill, drilling a pre-hole 2 Gundrill penetration
(drill diameter +0.02 mm) through the pre-hole

2 x D min

• The solid carbide drills can be re-sharpened and re-coated cutting edge and gash geometry, producing an
at least 10 times (see re-grinding instructions on page optimal chip on all kinds of materials, providing
595). excellent chip evacuation.
• The 3 flute drills feature high dynamic stability and reduced • Excellent performance on low carbon steel or other
vibrations, which enable high speed drilling on nonferrous gummy materials, when compared to any other 3 flute
materials. (It is recommended to use balanceable adapters solid carbide drills which are usually not recommended
when exceeding 10,000 RPM). to be used on such materials.
• 3 flute, solid carbide drills can be used with minimal • Higher cutting edge life, when compared to 2 flute solid
quantity lubrication or emulsion spray (MMS or MQL carbide drills without internal coolant holes.
systems) or even dry machining for nonferrous materials. (The load is divided among three cutting edges,
• The 3 flute solid carbide drill has a unique versus two).
When compared to 2 flute solid carbide drills:
• Prolonged cutting edge life increases productivity, due to
decrease in drill change and setup time.
Primary • Less torque per cutting edge, therefore, can be used at
Clearance Wiper
Chisel higher feed rates or used to reduce torque on machines
Secondary Gash with limited torque
Cutting Lip • The 3 flute solid carbide drills can be used on any CNC
machining center, lathe machine, or drilling machine
Primary
Cutting Lip (which usually provides better and more stable conditions).

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