Insert Selection Depth of Cut(vc)Cutting Speed LargeDepth of Cut RoughingMedium CuttingFinishing (vc)Cutting Speed Depth of Cut LargeDepth of Cut RoughingMedium CuttingFinishing Cast Iron Turning Insert Selection Guide Chipbreakers Negative Type Positive Type (mm) (mm) 6,0 No breaker No 6,0 NGZ NGZ breaker4,0 4,0 No breakerNUZ NGZ(NUX) Nobreaker 2,0 2,0 NMU NMU NUZ NUZ (Sharper Edge and Low Cutting Force) NMU 0 0,2 0,4 0,6 Sharp Edge Strong Edge 0 0,2 0,4 0,6 Sharp Edge Strong Edge Feed Rate(mm/rev) Feed Rate(mm/rev) Grades l GG (Grey Cast Iron) l GGG (Ductile Cast Iron) (m/min) (m/min) 2.000 500 BNS800 High Speed,Continuous Cutting High Speed,Continuous Cutting 1.000 BN7000 AC405K Continuous Cutting 500 AC405K Continuous Cutting 300 AC415K Mill-Scaled Work,Mill-Scaled Work,Interrupted CuttingBNC500Interrupted Cutting 200 300 AC415K 200 AC420K AC420K BN7000 100 100AC8025P AC8025P Finishing Roughing Finishing Roughing Continuous Cutting General Cutting Interrupted Cutting Continuous Cutting General Cutting Interrupted Cutting Recommended Cutting Conditions (Min. - Optimum - Max.) Applications CuttingProcess Chipbreakers Grades GG (Grey Cast Iron)Feed Rate Cutting Speed GGG (Ductile Cast Iron)Feed Rate Cutting Speed (mm/rev) (m/min) (mm/rev) (m/min) Continuous ~High SpeedGeneral – BN7000 0,1-0,20-0,5 500-1.500-2.000 − − Cutting Continuous − BNC500 − − 0,1-0,20-0,4 250-350-500 Continuous NUZ AC405K 0,1-0,25-0,4 230-400-570 0,1-0,25-0,4 170-350-500 Finishing General NUZ AC415K 0,1-0,25-0,4 200-350-500 0,1-0,25-0,4 150-300-450 Interrupted NGZ AC415K 0,1-0,30-0,5 150-275-400 0,1-0,30-0,5 150-250-350 Light Continuous NGZ AC405K 0,1-0,30-0,5 170-315-460 0,1-0,30-0,5 170-285-400 Interrupted General NGZ AC415K 0,1-0,30-0,5 150-275-400 0,1-0,30-0,5 150-250-350 Medium Interrupted NGZ AC420K 0,1-0,30-0,5 100-200-300 0,1-0,30-0,5 80-150-220 Continuous NGZ AC415K 0,1-0,30-0,5 150-275-400 0,1-0,30-0,5 150-250-350 Roughing General NGZ AC420K 0,1-0,30-0,5 100-200-300 0,1-0,30-0,5 80-150-220 Interrupted – AC420K 0,2-0,35-0,6 100-175-250 0,2-0,35-0,6 80-130-180 A10