Recommended Cutting Conditions Recommended Cutting Conditions - Boring (Positive Insert: Cutting Dia. under 10mm) [ap indicates radius] ISO Workpiece Material Hardness Cutting Range Applications Recommended Recommended Corner-R Lower Limit - Recommendation - Upper Limit Classification Chipbreaker Insert Grades (rε) Vc (m/min) ap (mm) f (mm/rev) Finishing Continuous EZB-F PR1225 0.05 30 - 70 - 110 0.05 - 0.1 - 0.2 0.01 - 0.04 - 0.07 HB (Solid Type) Interruption EZB-H 0.15 30 - 60 - 90 0.05 - 0.1 - 0.2 0.03 - 0.07 - 0.1 Low-carbon Steel ≤ Finishing Continuous F PR1425 0.1 40 - 80 - 120 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07 Low-carbon Alloy 300 Interruption 0.2 40 - 70 - 100 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1 Finishing-Medium Continuous CF PR1425 0.1 40 - 80 - 120 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07 Interruption 0.2 40 - 70 - 100 0.05 - 0.15 - 0.25 0.03 - 0.07 - 0.1 Finishing Continuous EZB-F PR1225 0.05 30 - 70 - 110 0.05 - 0.1 - 0.2 0.01 - 0.04 - 0.07 HB (Solid Type) Interruption EZB-H 0.15 30 - 60 - 90 0.05 - 0.1 - 0.2 0.03 - 0.07 - 0.1 *P Medium-carbon Steel ≤ Finishing Continuous F PR1425 0.1 40 - 80 - 120 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07 Medium-carbon Alloy 300 Interruption 0.2 40 - 70 - 120 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1 Finishing-Medium Continuous CF PR1425 0.1 40 - 80 - 120 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07 Interruption 0.2 40 - 70 - 100 0.05 - 0.15 - 0.25 0.03 - 0.07 - 0.1 Finishing Continuous EZB-F PR1225 0.05 30 - 70 - 110 0.05 - 0.1 - 0.2 0.01 - 0.04 - 0.07 HB (Solid Type) Interruption EZB-H 0.15 30 - 60 - 90 0.05 - 0.1 - 0.2 0.03 - 0.07 - 0.1 F High-carbon Alloy ≤ Finishing Continuous F PR1425 0.1 40 - 80 - 120 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07 280 Interruption 0.2 40 - 70 - 100 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1 Finishing-Medium Continuous CF PR1425 0.1 40 - 80 - 120 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07 Interruption 0.2 40 - 70 - 100 0.05 - 0.15 - 0.25 0.03 - 0.07 - 0.1 Finishing Continuous EZB-F PR1225 0.05 30 - 60 - 80 0.05 - 0.1 - 0.2 0.01 - 0.03 - 0.05 HB (Solid Type) Interruption EZB-H 0.15 30 - 60 - 80 0.05 - 0.1 - 0.2 0.02 - 0.05 - 0.07 Stainless Steel ≤ Finishing Continuous F PR1225 0.1 30 - 60 - 80 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07 Boring 220 Interruption PR1535 0.2 30 - 60 - 80 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1 Finishing-Medium Continuous CF PR1225 0.1 30 - 60 - 80 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07 M Interruption PR1535 0.2 30 - 60 - 80 0.05 - 0.15 - 0.25 0.03 - 0.07 - 0.1 Finishing Continuous EZB-F PR1225 0.05 30 - 60 - 80 0.05 - 0.1 - 0.2 0.01 - 0.03 - 0.05 HB (Solid Type) Interruption EZB-H 0.15 30 - 60 - 80 0.05 - 0.1 - 0.2 0.02 - 0.05 - 0.07 Stainless Steel ≤ Finishing Continuous F PR1225 0.1 30 - 60 - 80 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07 300 Interruption PR1535 0.2 30 - 60 - 80 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1 Finishing-Medium Continuous CF PR1225 0.1 30 - 60 - 80 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07 Interruption PR1535 0.2 30 - 60 - 80 0.05 - 0.15 - 0.25 0.03 - 0.07 - 0.1 Finishing Continuous (VNB) KW10 0.03 30 - 60 - 100 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07 (Solid Type) Interruption (VNB-NB) 0.2 30 - 60 - 100 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1 HB Continuous 0.1 30 - 60 - 100 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07 Gray Cast Iron ≤ Finishing Interruption F KW10 0.2 30 - 60 - 80 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1 250 0.2 30 - 60 - 100 0.1 - 0.2 - 0.3 0.03 - 0.05 - 0.07 Finishing-Medium Continuous Without Chipbreaker KW10 K Interruption 0.4 30 - 60 - 80 0.1 - 0.2 - 0.3 0.03 - 0.07 - 0.1 Finishing Continuous (VNB) KW10 0.03 30 - 60 - 80 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07 (Solid Type) Interruption (VNB-NB) 0.2 30 - 60 - 80 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1 HB Continuous 0.1 30 - 60 - 80 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07 Nodular Cast Iron ≤ Finishing Interruption F,U KW10 0.2 30 - 60 - 80 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1 270 0.2 30 - 60 - 100 0.1 - 0.2 - 0.3 0.03 - 0.05 - 0.07 Finishing-Medium Continuous Without Chipbreaker KW10 Interruption 0.4 30 - 60 - 80 0.1 - 0.2 - 0.3 0.03 - 0.07 - 0.1 High Speed Finishing Continuous Without Chipbreaker KPD001 0.05 150 - 200 - 300 0.05 - 0.1 - 0.3 0.05 - 0.1 - 0.15 Non-ferrous Metals HB (Rainbow Surface Gloss) N Copper Alloy ≤ Finishing Continuous F,U PDL025 0.1 100 - 150 - 200 0.05 - 0.3 - 0.5 0.03 - 0.1 - 0.2 Aluminum 100 (Long Tool Life) Interruption 0.2 100 - 150 - 200 0.05 - 0.3 - 0.5 0.03 - 0.1 - 0.2 Aluminum Alloys Finishing Continuous F,U KW10 0.1 100 - 150 - 200 0.05 - 0.3 - 0.5 0.03 - 0.1 - 0.2 Interruption 0.2 100 - 150 - 200 0.05 - 0.3 - 0.5 0.03 - 0.1 - 0.2 HB Precision Finishing Continuous Without Chipbreaker KPD001 0.1 100 - 120 - 150 0.05 - 0.1 - 0.3 0.03 - 0.07 - 0.1 Titanium Alloys ≤ (Rainbow Surface Gloss) Interruption 0.2 70 - 100 - 120 0.05 - 0.1 - 0.3 0.03 - 0.07 - 0.1 400 Finishing Continuous F,U KW10 0.1 20 - 40 - 60 0.05 - 0.2 - 0.5 0.03 - 0.1 - 0.2 S Interruption 0.2 20 - 40 - 60 0.05 - 0.2 - 0.5 0.03 - 0.1 - 0.2 HB Finishing Continuous (VNB) KW10 0.2 10 - 30 - 50 0.05 - 0.1 - 0.3 0.03 - 0.05 - 0.1 Heat-resistant ≤ (Solid Type) Interruption 0.2 10 - 30 - 50 0.05 - 0.1 - 0.3 0.03 - 0.05 - 0.08 Alloys 350 Finishing Continuous F,U KW10 0.2 10 - 30 - 50 0.05 - 0.2 - 0.4 0.03 - 0.05 - 0.1 Interruption 0.2 10 - 30 - 50 0.05 - 0.2 - 0.4 0.03 - 0.05 - 0.1 40~50 Finishing Continuous (VNB) PR930 0.2 30 - 50 - 70 0.05 - 0.1 - 0.4 0.01 - 0.02 - 0.05 H Hardened Steel HRC Interruption 0.2 30 - 50 - 70 0.05 - 0.1 - 0.2 0.01 - 0.02 - 0.03 Hard Materials 45~68 Finishing Continuous ME KBN05M 0.2 60 - 100 - 140 0.05 - 0.1 - 0.2 0.02 - 0.05 - 0.1 HRC Interruption MES 0.4 60 - 80 - 120 0.05 - 0.1 - 0.2 0.02 - 0.05 - 0.1 * Please use it with PR1005 set to Vc=150m/min or below, for machining of free-cutting steel such as small size SUM. For ap and f, refer to specs for low carbon steels. F93