Tools Grooving Flank Wear Width (mm) SEC-Grooving Tools GND Type ■ Internal Coolant Holder GNDM-J Type / GNDL-J Type ● Series expansion of SEC-Grooving Tool GND Type with internal coolant holder series ● Available grooving widths from 2.0 to 6.0mm ● Effective coolant supply to the cutting edge during grooving, achieving both high-efficiency high-speed machining and longer insert tool life ● Improved chip control through direct coolant supply around the cutting edge F ● Wear Resistance 0.25 ■ Conventional Tool 0.20 GNDM-J Type Coolant hole at the top 0.15 ■ 7MPa improves chip control ■0.10 ● ●● ● ● ● ● ● ●Tool Life 0.05 Over 7 Times ●■ Longer Coolant hole at the bottom effectively suppresses wear 0 20 40 60 80 Number of Machined Grooves ● Chip control Coolant Pressure: 7MPa Coolant Pressure: 1MPa External Coolant Supply Work Material: Ti-6Al-4V Holder: GNDM R2525K-312J Insert: GCMN3002-GG (AC530U) Cutting Conditions: vc = 60m/min, f = 0.1mm/rev, ap = 5.0mm Wet ■ CF Type Chipbreakers for Cut-Off Machining ● Chipbreakers with front cutting edge angles 10°/15° for cut-off machining now available ● Asymmetric breaker design demonstrates outstanding chip control even on inserts with front cutting edge angles, where chip control is typically difficult 10°/15° GCMR20003-CF-10 GCMR20003-CF-15 Competitor's Product Work Material: SS400 Holder: GNDM R2525M-220 Insert: GCMR20003-CF-10,15 (AC1030U) Cutting Conditions: n = 2,000min-1, f = 0.08mm/rev Wet F11