D.O.C. (mm)Corner wear amount (mm) ø12 ø6 Small tools Introduction  Great for high pressure coolant - Chip control comparison (Internal evaluation) SDJC-JCT holder allows excellent chip control in a wide variety of cutting conditions SDJC-JCT holder Competitor holder A 2.0 1.5 E Unstable and irregular chips 1.0 0.5 0.03 0.05 0.07 0.10 0.03 0.05 0.07 0.10 Feed rate (mm/rev) Feed rate (mm/rev) Cutting conditions: Vc = 80 m/min, DCGT11T302MP-CK PR1535 (Same inserts were used) Workpiece: TAB6400 (Ti-6Al-4V) External and internal coolant (1.5MPa) turning Great for high pressure coolant - Wear resistance comparison (Internal evaluation) 0.20 Cutting edge SDJC-JCT holder SDJC-JCT holder after machining 150 min Competitor holder A 0.15 0.10 0.05 Competitor Holder A after machining 106 min 0.00 0 30 60 90 120 150 180 Cutting time (min) Defects Cutting conditions: Vc = 200 m/min, external turning: ap = 2.0 mm, f = 0.05 mm/rev, facing: ap = 0.2 mm, f = 0.03 mm/rev DCGT11T302MFP-GQ PR1535 (same inserts were used) Workpiece: X5CrNi1810, external and internal coolant (1.5MPa) External turning and facing Case studies Pipe X5CrNi1810-equivalent Pin 1.2842 Vc = 160 m/min Vc = 180 m/min ap = 0.9 / 1.2 mm ap = 1.4 mm f = 0.18 mm/rev f = 0.13 mm/rev Wet (Internal coolant: 14MPa) Wet DCMT11T304 type DCMT11T304 type Chip control Chip control SDJC-JCT holder Competitor holder B SDJC-JCT holder Conventional holder Internal coolant Internal coolant Internal coolant: 2.5MPa External coolant Good Good Changes to SDJC-JCT improved chip control while keeping SDJC-JCT holder with internal coolant improved chip control. same or more tool life. Reduced chip entanglement. User evaluation User evaluation E5