Recommended Cutting Conditions  GBA inserts (Ground Chipbreaker) Recommended Insert Grades (Cutting Speed Vc: m/min) (1) f for Grooving (mm/rev) MC Cermet MEGA PVD Coated Carbide Carbide CBN PCD (2) f for Turning (mm/rev) Remarks Workpiece (3) ap for Turning (mm) Material PV7040 TN620 TC40N TN90 PR1215 PR930 PR1115 PR905 KW10 KBN510 KBN525 KPD001 (KPD010) GBA& GBA& GBA& GBA& GBA& 033~100-... 125~200-... 230~300-... 330~400-... 400~480-... ☆ ★ ☆ ☆ ★ ☆ ☆ (1) 0.03~0.08 (1) 0.04~0.09 (1) 0.05~0.1 (1) 0.05~0.12 (1) 0.05~0.12 Carbon Steel 150~240 80~220 150~220 150~220 80~200 80~180 80~180 - - - - (2) Not recom. (2) 0.04~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (2) 0.05~0.1 (3) Not recom. (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 ☆ ★ ☆ ☆ ★ ☆ ☆ (1) 0.03~0.07 (1) 0.04~0.08 (1) 0.05~0.09 (1) 0.05~0.1 (1) 0.05~0.1 Alloy Steel 130~220 80~200 130~200 130~200 80~180 80~160 80~160 - - - - (2) Not recom. (2) 0.04~0.08 (2) 0.05~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (3) Not recom. (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 ☆ ☆ ☆ ★ (1) 0.03~0.07 (1) 0.04~0.08 (1) 0.05~0.09 (1) 0.05~0.1 (1) 0.05~0.1 Stainless Steel - - - 70~150 60~150 60~130 60~130 - - - - (2) Not recom. (2) 0.04~0.08 (2) 0.05~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (3) Not recom. (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 Coolant ★ ☆ ★ (1) 0.03~0.08 (1) 0.04~0.09 (1) 0.05~0.1 (1) 0.05~0.12 (1) 0.05~0.12 Cast Iron - - - - - - - 80~180 60~120 150~400 - (2) Not recom. (2) 0.04~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (2) 0.05~0.1 (3) Not recom. (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 ★ ★ (1) 0.05~0.12 (1) 0.05~0.15 (1) 0.05~0.15 (1) 0.08~0.15 (1) 0.08~0.15 Aluminum - - - - - - - - 150~400 - 150~2,000 (2) Not recom. (2) 0.05~0.15 (2) 0.05~0.15 (2) 0.08~0.15 (2) 0.08~0.15 (3) Not recom. (3) Max. 0.5 (3) Max. 0.8 (3) Max. 0.8 (3) Max. 0.8 ★ ★ (1) 0.05~0.12 (1) 0.05~0.15 (1) 0.05~0.15 (1) 0.08~0.15 (1) 0.08~0.15 Brass - - - - - - - - 150~300 - 200~800 (2) Not recom. (2) 0.05~0.15 (2) 0.05~0.15 (2) 0.08~0.15 (2) 0.08~0.15 (3) Not recom. (3) Max. 0.5 (3) Max. 0.8 (3) Max. 0.8 (3) Max. 0.8 ★ (1) 0.02~0.05 (1) 0.03~0.07 Hard materials - - - - - - - - - 80~120 - - (2) Not recom. (2) 0.01~0.04 - - G (3) Not recom. (3) Max. 0.1 * Above cutting condition is for external grooving. Set both cutting speed and feed 10% lower for internal  grooving. ★ :1st Recommendation ☆ :2nd Recommendation MC indicates MEGACOAT Cermet. MEGA indicates MEGACOAT  GBA inserts (GM Chipbreaker) Recommended Insert Grades (1) f for Grooving (mm/rev) (Cutting Speed Vc: m/min) (2) f for Turning (mm/rev) Remarks (3) ap for Turning (mm) Grooving Workpiece Material Cermet MEGACOAT GBA43& GBA43& GBA43& GBA43& GBA43& 140-010GM 150-020GM 175-020GM~ 250-030GM~ 400-040GM TN620 PR1215 230-020GM 350-030GM ★ ☆ (1) 0.03~0.1 (1) 0.03~0.12 (1) 0.03~0.12 (1) 0.04~0.15 (1) 0.05~0.15 Carbon Steel 80~240 80~220 (2) 0.03~0.08 (2) 0.03~0.08 (2) 0.03~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (3) Max. 0.2 (3) Max. 0.3 (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.8 Coolant ★ ☆ (1) 0.03~0.1 (1) 0.03~0.12 (1) 0.03~0.12 (1) 0.04~0.15 (1) 0.05~0.15 Alloy Steel 80~220 80~200 (2) 0.03~0.08 (2) 0.03~0.08 (2) 0.03~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (3) Max. 0.2 (3) Max. 0.3 (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.8 ★ (1) 0.03~0.1 (1) 0.03~0.1 (1) 0.03~0.1 (1) 0.04~0.12 (1) 0.04~0.12 Stainless Steel - 60~150 (2) 0.03~0.08 (2) 0.03~0.08 (2) 0.03~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (3) Max. 0.2 (3) Max. 0.3 (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.8 * Above cutting condition is for external grooving. Set both cutting speed and feed 20% lower for internal grooving.  GBA inserts (MY Chipbreaker) Recommended Insert Grades (Cutting Speed Vc: m/min) (1) f for Grooving (mm/rev) Cermet MEGA PVD Coated Carbide Carbide CBN PCD (2) f for Turning (mm/rev) Remarks (3) ap for Turning (mm) Workpiece Material TN6020 TC40N PR1215 PR930 PR1115 KW10 KBN510 KPD001 (KPD010) GBA43& GBA43& GBA43& GBA43& GBA43& 175-020MY~ 230-020MY~ 300-030MY 330-030MY~ 400-040MY 200-020MY 265-030MY 350-030MY ☆ ★ ☆ ☆ (1) 0.03~0.08 (1) 0.04~0.09 (1) 0.05~0.1 (1) 0.05~0.12 (1) 0.05~0.12 Carbon Steel 150~220 - 80~200 80~200 80~200 - - - (2) 0.03~0.08 (2) 0.04~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (2) 0.05~0.1 (3) Max. 0.3 (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 Coolant ☆ ★ ☆ ☆ (1) 0.03~0.07 (1) 0.04~0.08 (1) 0.05~0.09 (1) 0.05~0.1 (1) 0.05~0.1 Alloy Steel 130~200 - 80~180 80~180 80~180 - - - (2) 0.03~0.1 (2) 0.04~0.08 (2) 0.05~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (3) Max. 0.3 (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 ☆ ☆ ☆ ★ (1) 0.03~0.07 (1) 0.04~0.08 (1) 0.05~0.09 (1) 0.05~0.1 (1) 0.05~0.1 Stainless Steel 70~150 - 60~150 60~150 60~150 - - - (2) 0.03~0.1 (2) 0.04~0.08 (2) 0.05~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (3) Max. 0.3 (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 * Above cutting condition is for external grooving. Set both cutting speed and feed 10% lower  for internal grooving. ★ :1st Recommendation ☆ :2nd Recommendation MEGA indicates MEGACOAT  GB inserts (Ground Chipbreaker) will be switched to GBA. Recommended Insert Grades (Cutting Speed Vc: m/min) (1) f for Grooving (mm/rev) Cermet PVD Coated Carbide Carbide CBN PCD (2) f for Turning (mm/rev) Remarks (3) ap for Turning (mm) Workpiece Material TN90 TC40N TC60M PR630 PR930 KW10 KBN510 KPD001 (KPD010) GB& GB& GB& GB& GB& 050~100 125~200 230~300 330~400 400~480 ☆ ☆ ☆ ★ (1) 0.03~0.08 (1) 0.04~0.09 (1) 0.05~0.1 (1) 0.05~0.12 (1) 0.05~0.12 Carbon Steel - 150~220 100~150 80~200 80~180 - - - (2) Not recom. (2) 0.04~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (2) 0.05~0.1 (3) Not recom. (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 ☆ ☆ ☆ ★ (1) 0.03~0.07 (1) 0.04~0.08 (1) 0.05~0.09 (1) 0.05~0.1 (1) 0.05~0.1 Alloy Steel - 130~200 80~130 80~180 80~160 - - - (2) Not recom. (2) 0.04~0.08 (2) 0.05~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (3) Not recom. (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 ☆ ☆ ★ (1) 0.03~0.07 (1) 0.04~0.08 (1) 0.05~0.09 (1) 0.05~0.1 (1) 0.05~0.1 Stainless Steel - - 60~100 60~150 60~130 - - - (2) Not recom. (2) 0.04~0.08 (2) 0.05~0.09 (2) 0.05~0.1 (2) 0.05~0.1 Coolant (3) Not recom. (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 ★ (1) 0.03~0.08 (1) 0.04~0.09 (1) 0.05~0.1 (1) 0.05~0.12 (1) 0.05~0.12 Cast Iron - - - - - 60~100 - - (2) Not recom. (2) 0.04~0.09 (2) 0.05~0.1 (2) 0.05~0.1 (2) 0.05~0.1 (3) Not recom. (3) Max. 0.3 (3) Max. 0.5 (3) Max. 0.5 (3) Max. 0.8 ★ ★ (1) 0.05~0.12 (1) 0.05~0.15 (1) 0.05~0.15 (1) 0.08~0.15 (1) 0.08~0.15 Aluminum - - - - - 150~400 - 150~2,000 (2) Not recom. (2) 0.05~0.15 (2) 0.05~0.15 (2) 0.08~0.15 (2) 0.08~0.15 (3) Not recom. (3) Max. 0.5 (3) Max. 0.8 (3) Max. 0.8 (3) Max. 0.8 ★ ★ (1) 0.05~0.12 (1) 0.05~0.15 (1) 0.05~0.15 (1) 0.08~0.15 (1) 0.08~0.15 Brass - - - - - 150~300 - 200~800 (2) Not recom. (2) 0.05~0.15 (2) 0.05~0.15 (2) 0.08~0.15 (2) 0.08~0.15 (3) Not recom. (3) Max. 0.5 (3) Max. 0.8 (3) Max. 0.8 (3) Max. 0.8 ★ :1st Recommendation ☆ :2nd Recommendation G101