High efficiency coated solid carbide drill KDA KDA is for excellent all-around drilling performance. Large line-up accommodates a wide variety of applications. Styles available Type N N ormal type General purpose design without coolant holes. Economical style for machining with external coolant. Diameter range 3D 5D Ø3 – Ø16 mm Cutting diameters available in 0.1 mm increments. Type C C oolant hole Coolant-through design Provides higher efficiency and stable machining with stainless steel, etc. Diameter 3D range 5D Ø3 – Ø16 mm NEW 8D Cutting diameters available in 0.1 mm increments. (8D: 0.5 mm increments for Ø11 mm and above). Features 1 General purpose design and line-up. Applicable to a wide range of machining applications Type N: No coolant holes 3D 131 Items 5D 131 Items Type C: With coolant holes 3D 131 Items 5D 131 Items 8D 91 NEW Double margin Items Features 2 High-performance coating maintains long tool life Excellent wear and heat resistance Aluminium Chrome (AlCr) coating Wear resistance comparison (Internal evaluation) 0.04 KDA Breakage Competitor A Competitor B 0.03 Wear (mm) 0.02 0.01 0 500 1,000 1,500 2,000 No. of holes machined Cutting conditions: Vc = 120 m/min., f = 0.23 mm/rev, H = 24 mm, Wet (Internal coolant) C50, BT50, Ø6 mm, 5×D, Type C. 2,500 KDA Competitor B 2
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