Recommended Cutting Conditions GMG / GMM / GMN / GMGA Recommended Insert Grades (Cutting Speed Vc: m/min) Grooving Turning Cermet CVD Coated PVD Coated Carbide Carbide Edge Width W (mm) Edge Width W (mm) Remarks Workpiece Carbide Material TN90 CR9025 PR915 PR930 PR905 KW10 2.0~3.0 4.0 5.0 6.0 / 8.0 2.0~3.0 4.0 5.0 6.0 / 8.0 f (mm/rev) f (mm/rev) Carbon Steel ☆ ☆ ☆ ★ - - 0.05~0.15 0.10~0.25 0.15~0.35 0.20~0.35 0.10~0.20 0.15~0.30 0.20~0.40 0.25~0.40 100~220 80~200 80~200 80~200 Alloy Steel ☆ ☆ ☆ ★ - - 0.05~0.15 0.10~0.25 0.15~0.35 0.20~0.35 0.10~0.20 0.15~0.30 0.20~0.40 0.25~0.40 80~200 70~180 70~180 70~180 Stainless Steel ☆ ☆ ★ ☆ - - 0.05~0.15 0.10~0.20 0.15~0.35 0.20~0.35 0.10~0.20 0.15~0.25 0.20~0.40 0.25~0.40 Coolant 70~160 60~150 60~150 60~150 Cast Iron - - - - ★ ☆ 0.05~0.20 0.10~0.30 0.15~0.40 0.20~0.40 0.10~0.25 0.15~0.35 0.20~0.45 0.25~0.45 100~200 70~150 Aluminum - - - - - ★ 0.05~0.20 0.08~0.25 0.10~0.25 0.12~0.30 0.10~0.20 0.10~0.25 0.10~0.25 0.15~0.30 200~500 Brass - - - - - ★ 0.05~0.15 0.08~0.20 0.10~0.25 0.12~0.30 0.10~0.20 0.10~0.25 0.10~0.25 0.15~0.30 100~200 Ref. to the notes below for turning conditions. ★ :1st Recommendation ☆ :2nd Recommendation (1) When using KGM Toolholder Recommended Cutting Conditions f W G ap (MAX.) (mm) under 80% of Edge Width ·ap ≤ 0.8W f (MAX.) (mm/rev) under 10% of Edge Width ·f ≤ 0.1W (ap) × (f) shall not exceed 1/2 of ap (MAX.) × f (MAX.) ap Load(mm2) Edge Width(mm) 2.0~2.5 3.0 4.0 5.0 6.0 8.0 rH ap × f ~0.20 ~0.36 ~0.64 ~1.00 ~1.44 ~2.56 Grooving ·ap×f ≤ 1 ×0.8W×0.1W = 0.04W2 2 (2) When using KGM-T Toolholder (Deep grooving type) Use 90% of KGM conditions (3) When using KGMM / KGMS / KFMS-8 Toolholder Recommended Cutting Conditions ap (MAX.) (mm) under 50% of Edge Width ·ap ≤ 0.5W f (MAX.) (mm/rev) under 4% of Edge Width ·f ≤ 0.04W should be as follows. (under 50% of KGM) Load(mm2) Edge Width(mm) 2.0~2.5 3.0 4.0 5.0 6.0 8.0 ap × f ~0.10 ~0.18 ~0.32 ~0.50 ~0.72 ~1.28 ·ap×f ≤ 0.02W2 (4) When using KIGM Toolholder Recommended Cutting Conditions ap (MAX.) (mm) under 70% of Edge Width ·ap ≤ 0.7W f (MAX.) (mm/rev) under 8% of Edge Width ·f ≤ 0.08W should be as follows. (under 70% of KGM) Load(mm2) Edge Width(mm) 3.0 4.0 5.0 ap × f ~0.25 ~0.44 ~0.70 ·ap×f ≤ 0.04W2 GMG / GMM / GMGA 8030 (Face Grooving) Recommended Insert Grades (Cutting Speed Vc: m/min) Face Grooving Turning Cermet CVD Coated PVD Coated Carbide Carbide Edge Width W (mm) Edge Width W (mm) Remarks Carbide Workpiece Material TN90 CR9025 PR915 PR930 PR905 KW10 8.0 8.0 f (mm/rev) f (mm/rev) Carbon Steel ☆ ☆ ☆ ★ - - 0.1~0.2 0.1~0.25 100~220 80~160 80~160 80~160 Alloy Steel ☆ ☆ ☆ ★ - - 0.1~0.2 0.1~0.25 80~160 70~160 70~160 70~160 Stainless Steel ☆ ☆ ★ ☆ - - 0.1~0.2 0.1~0.25 Coolant 70~140 60~130 60~130 60~130 Cast Iron - - - - ★ ☆ 0.1~0.3 0.1~0.35 80~180 70~130 Aluminum - - - - - ★ 0.08~0.25 0.08~0.30 200~300 Brass - - - - - ★ 0.08~0.25 0.08~0.30 100~150 ★ :1st Recommendation ☆ :2nd Recommendation G105