High efficiency indexable drill MagicDrill DRXR Two twisted coolant holes Enlarged flute space Improved and increased reliability 1 Twisted coolant holes Enlarged flute space Twisted coolant holes Replaceable insert Inner edge side 2 Excellent surface finish due to stable chip control Chip comparison (Internal evaluation) DRXR Competitor A Double coolant hole Outer edge side Competitor B Stable chip control Unstable chip control Cutting conditions: Workpiece C45, ø14-5D, vc = 150 m/min, f = 0.06 mm/rev, depth = 70 mm, blind hole DRXR MagicDrill showed greater chip control when compared to competitors A and B. Unstable chip control Hole wall surface finish (Internal evaluation) µm 50.0 30.0 10.0 -10.0 -30.0 Cutting conditions: Workpiece C45, ø14-5D, vc = 150 m/min, f = 0.04 mm/rev, -50.0 depth = 70 mm, blind hole 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 mm 2
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