Sumitomo launches fast penetration low adhesion SumiDrill SPD power series
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Sumitomo's general purpose SumiDrill SDP power series boasts both novel geometry and a high lubricity, hard and tough multi-layer PCX 7 coating. The combination is design to offer maximised wear resistance with low levels of adhesion to withstand higher rates of penetration with minimal built-up edge formation.
The curved cutting edge to the lip of the SumiDrill SDP, combined with positive geometry and an obtuse 140º point angle, requires a low cutting force and is thus suitable for use with lower spindle power. The more compact chips formed facilitates swarf evacuation.
The incorporation of Sumitomo's 'double margin' concept, where the periphery of the drill body is relieved to create more than one margin on each land of the leading edge and heel of the tool adjacent to the 30º helix angle fluting, reduces the contact area of the tool with the material being processed. It also helps optimise tool stability during the cutting cycle when using higher penetration rates thus creating an improved process and more consistent level of hole accuracy.
Solid carbide SDP Sumitomo SumiDrills are available to suit a wide range of materials from hardened steel up to 45 HRC, cast iron and free cutting steels as well as aluminium and copper. The standard range covers holes between 3 and 12 mm diameter with hole depths of 3xD and 5xD, while up to 7xD tools are available to special order. All drills have through-the-tool coolant feed.
