Grooving Cutting force External grooving GDM/GDMS/GDGS type Various insert lineup for KGD toolholder Smooth chip control » Newly-introduced chipbreakers designed to cover a variety of workpiece materials. High precision edge preparation » High precision molding technology with tolerance ±0.03 mm (Edge width 2, 3, 4 mm types) Highly-reputed MEGACOAT technology » Long tool life and high efficiency machining achieved by superior oxidation resistance and wear resistance. Application map Chipbreaker selection Grooving and turning Application High GL: Low feed PH: High feed External grooving Copying G GM: Generalpurpose Non-ferrous Low feed Carbon steel High feed metals Alloy steel Stainless steel Interruption GS: Lowcutting force Low rigidmaterial Low Feed rate High Low cutting Low feed General High feed Copying force purpose GS GL GM PH CM Comparison of chip control (15CrMo4, Vc = 150 m/min, f = 0.15 mm/rev) GM chipbreaker Competitor A Competitor B Smooth chip control » Less chip biting troubles Toolholder and insert combination of KGD type (new) and KGM type (conventional) Insert setting angle for grooving toolholders New insert Conventional insert KGD...0˚ Conventional tools KGM...5˚ GDM GMM 0° 5° New toolholder Conventional KGD toolholder KGM Installing conventional inserts to the new toolholder is not recommended. G28