Technical Description of productsInformation 27. Table of recommend centering condition ■Reference of drilling condition for Center drills (HSS) Reference table of cutting speed and feed per revolution (when substrate is HSS) ・Drilling speed (Cone diameter at the larger end) Workpiece materials Drilling speed (m/min) Drill diameter Feed per revolution (mm/rev) Low carbon steels Carbon steels Alloy steels Stainless steels Cast iron ■Reference of drilling condition for Center drills (Carbide) Reference table of cutting speed and feed per revolution (when substrate is Carbide) ・Drilling speed (Cone diameter at the larger end) Workpiece materials Drilling speed (m/min) Drill diameter Feed per revolution (mm/rev) Low carbon steels Carbon steels Alloy steels Stainless steels Cast iron ■Reference of drilling condition for NC-SD-V Reference table of drilling speed, feed per revolution ・Drilling speed (Tool diameter) Workpiece materials Drilling speed (m/min) Drill diameter Feed per revolution (mm/rev) Low carbon steels Carbon steels Alloy steels Alloy tool steels Stainless steels Cast iron Aluminum ■Reference of chamfering condition for Countersinks Reference table of drilling speed, feed per revolution ・Cutting speed (Tool diameter) Cutting speed (m/min) Feed per revolution (mm/rev) Workpiece materials Tool diameter Single edge Multiple edges Single edge Multiple edges Low carbon steels Carbon steels Alloy steels Alloy tool steels Stainless steels Cast iron Aluminum Technical-89