STA NDA RD CUT TING CONDITIONS 1 Chamfering and countersinking (VCA, VCW) Grade Cutting speed Feed ISO Workpiece material Hardness Vc (m/min) f (mm/rev) Low carbon steels S45C, S55C, etc. - 300 HB 60 - 100 0.06 - 0.12 C45, C55, etc. High carbon steels SCM440, SCr415, etc. - 300 HB 50 - 80 0.06 - 0.12 42CrMo4, 15Cr3, etc. 2 Prehardened steel 30 - 40 HRC 40 - 70 0.06 - 0.12 Insert PX5, NAK80, etc. Stainless steels SUS304, SUS316, etc. - 200 HB 30 - 50 0.06 - 0.12 X5CrNi18-9, X5CrNiMo17-12-2, etc. Aluminium alloys - 100 - 200 0.08 - 0.15 Titanium alloys Ext. Toolholder Ti-6Al-4V, etc. - 30 - 50 0.05 - 0.1 Hardened steel Heat-resistant alloys Inconel 718, etc. SKD61, SKT4, etc. X40CrMoV5 1, 55NiCrMoV6, etc. - 40 - 50 HRC 20 - 40 30 - 50 0.04 - 0.08 0.05 - 0.1 3 SKD11, SKH, etc. X153CrMoV12, HS18-0-1, etc. 50 - 60 HRC 20 - 40 0.04 - 0.08 Int. Toolholder Counter boring (VGC) ISO Workpiece material Hardness Cutting speed Vc (m/min) Feed per tooth fz (mm/t) 4 Low carbon steels S45C, S55C, etc. - 300 HB 40 - 80 0.04 - 0.08 C45, C55, etc. High carbon steels 5 SCM440, SCr415, etc. - 300 HB 30 - 50 0.04 - 0.08 Threading 42CrMo4, 15Cr3, etc. Prehardened steel 30 - 40 HRC 20 - 30 0.04 - 0.08 PX5, NAK80, etc. Stainless steels SUS304, SUS316, etc. - 200 HB 15 - 25 0.04 - 0.08 X5CrNi18-9, X5CrNiMo17-12-2, etc. Titanium alloys - 15 - 25 0.04 - 0.07 Ti-6Al-4V, etc. 6 Heat-resistant alloys Grooving - 10 - 20 0.03 - 0.06 Inconel 718, etc. SKD61, SKT4, etc. 40 - 50 HRC 15 - 25 0.04 - 0.07 X40CrMoV5 1, 55NiCrMoV6, etc. Hardened steel SKD11, SKH, etc. 50 - 60 HRC 10 - 20 0.03 - 0.06 X153CrMoV12, HS18-0-1, etc. When drilling, the step feed (pecking) operation should be applied with the depth of 0.3 - 0.5 mm per step. Apply the same cutting conditions as the VEE type head when conducting shoulder milling or slotting operations. 7 Endmill TOLER A N CE OF TO OL D I A ME TER Basic dimensions (mm) Permissible dimensional deviations (μm) > ≤ e8 e9 h6 h7 h9 h10 z9 8 -25 -25 0 0 0 0 +78 Drilling Tool 6 10 -47 -61 -9 -15 -36 -58 +42 -32 -32 0 0 0 0 +93 10 12 -59 -75 -11 -18 -43 -70 +50 JISB0401-2: 1998 (ISO286-2: 1988) extract Technical Reference 9 7-9