Indexable Tools Tooling by DIJET Mirror Ball BnMTyPE Table 2. Effective tool diameter chart Tool dia. Effective tool diameter: De (mm) φDc Axial depth of cut: ap (mm) (mm) 0.2 0.3 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6 2.2 2.6 3.3 4.5 8 2.5 3 3.9 5.3 6.2 10 2.8 3.4 4.4 6 7.1 8 12 3.1 3.7 4.8 6.6 7.9 8.9 9.7 16 3.6 4.3 5.6 7.7 9.3 10.6 11.6 12.5 20 4 4.9 6.2 8.7 10.5 12 13.2 14.3 15.2 16 25 4.5 5.4 7 9.8 11.9 13.6 15 16.2 17.3 18.3 19.2 20 30 4.9 6 7.7 10.8 13.1 15 16.6 18 19.3 20.4 21.4 22.4 23.2 24 32 5 6.2 7.9 11.1 13.5 15.5 17.2 18.7 20 21.2 22.2 23.2 24.1 25 Table 3. Maximum chip thickness chart Max. chip thickness: h max (mm) Work Materials Hardness Tool dia.: Dc (mm) 6 8 10 12 16 20 25 30 32 Grey cast iron (FC250, FC300) 160~260HB 0.07 0.09 0.12 0.15 0.18 0.18 0.21 0.21 0.21 Nodular cast iron (FCD600, FCD700) 170~300HB 0.05 0.07 0.10 0.12 0.15 0.15 0.17 0.17 0.17 Carbon steel (S50C, S55C) 180~280HB 0.05 0.07 0.10 0.10 0.12 0.12 0.15 0.15 0.15 Low alloy steel (SCM440) 180~280HB 0.05 0.07 0.10 0.10 0.12 0.12 0.15 0.15 0.15 Mold steel (HPM, NAK) 280~400HB 0.03 0.05 0.065 0.09 0.09 0.09 0.11 0.11 0.11 Tool & Die steel (SKD61, SKD11) 180~255HB 0.03 0.05 0.065 0.09 0.11 0.11 0.13 0.13 0.13 Hardened die steel (SKD61, SKD11) 40~55HRC 0.02 0.04 0.05 0.07 0.09 0.09 0.11 0.11 0.11 Stainless steel (SUS304, SUS316) 150~250HB 0.03 0.05 0.065 0.09 0.09 0.09 0.11 0.11 0.11 Copper alloy 80~150HB 0.10 0.12 0.15 0.18 0.21 0.21 0.24 0.24 0.24 Aluminium alloy 30~100HB 0.12 0.15 0.18 0.22 0.26 0.26 0.30 0.30 0.30 Graphite 0.15 0.20 0.24 0.28 0.32 0.32 0.36 0.36 0.36 Table 4. Reduction ratio of recommended cutting conditions Tool dia.φDc Short series Middle series Long series (mm) ℓ2 ℓ2/Dc min-1 % Feed % ℓ2 ℓ2/Dc min-1 % Feed % ℓ2 ℓ2/Dc min-1 % Feed % 6 30 5.0 100 100 35 5.8 100 100 70 11.7 45 45 8 35 4.4 100 100 53 6.6 60 65 75 9.4 50 50 10 35 3.5 100 100 53 5.3 70 80 75 7.5 60 65 12 26 2.2 100 100 53 4.4 90 90 85 7.1 65 65 16 32 2.0 100 100 63 3.9 100 100 100 6.3 70 70 20 38 1.9 100 100 75 3.8 100 100 115 5.8 75 75 25 45 1.8 100 100 90 3.6 100 100 135 5.4 80 80 30 53 1.8 100 100 106 3.5 100 100 160 5.3 80 90 32 53 1.7 100 100 106 3.3 100 100 160 5.0 80 90 Note) In case of using long series tools, recommend to reduce cutting conditions as per the above percentages. C187