Insert Selection (vc)Cutting Speed Depth of Cut (mm) (vc)Cutting Speed Hardened Steel Turning Insert Selection Guide Chipbreakers NSV Type Chipbreaker: For chip control during carburized layer removal NLV Type / NFV Type Chipbreaker: For chip control during finishing of hardened steel 7,0 – 6,0 – NSV 5,0 – NSV 4,0 – NLV 3,0 – NLV 2,0 – NFV 1,0 – NFV 0 l l l 0 0,1 0,2 0,3 Feed Rate (mm/rev) Grades l Coated SUMIBORON l Uncoated SUMIBORON (m/min) (m/min) 300 300 BNC100 High-PrecisionMachining200BNC2010 BNC160 BNC200 BN1000 BNX20200BNX25 General Purpose Cutting100 100 General Purpose Cutting BNC2020 BNC300 BN2000 BN350 0 AC503U 0 Finishing Roughing Finishing Roughing Continuous Cutting General Cutting Interrupted Cutting Continuous Cutting General Cutting Interrupted Cutting Recommended Cutting Conditions (Min. - Optimum - Max.) Cutting Process Grade Depth of Cut Feed Rate Cutting Speed (mm) (mm/rev) (m/min) BNC2010 0,03-0,20-0,35 0,03-0,10-0,20 120-200-300 BNC100 0,03-0,20-0,30 0,03-0,10-0,20 120-200-300 ContinuousCutting BN1000 0,03-0,15-0,20 0,03-0,10-0,15 100-150-300 BNX10 0,03-0,10-0,20 0,03-0,10-0,15 120-180-300 AC503U 0,03-0,50-1,00 0,02-0,05-0,10 40- 70-100 BNC2020 0,03-0,30-0,50 0,03-0,20-0,40 50-130-220 BNC160 0,03-0,20-0,35 0,03-0,10-0,25 120-180-220 General Turning BNC200 0,03-0,30-0,50 0,03-0,10-0,30 50-130-220 BN2000 0,03-0,20-0,30 0,03-0,10-0,20 50-100-200 BNX20 0,03-0,20-0,35 0,03-0,15-0,30 70-130-170 BNC300 0,03-0,20-0,30 0,03-0,10-0,20 50-100-150 InterruptedCutting BN350 0,03-0,20-0,30 0,03-0,10-0,20 50-100-150 BNX25 0,03-0,20-0,50 0,03-0,15-0,30 120-160-220 A14