
Tooling by DIJET Indexable Tools Mirror Radius HRM / FRMTyPE ■ RECOMMENDED CUTTING CONDITIONS ● HRM, FRM type insert + Carbide shank holder (C-Body) ※ Recommended to reduce depth of cut ap by corner radius with keeping feed speed Vf. (Refer the below table) Tool dia. (mm) Work Insert φ10×R2/φ11×R2 φ12×R2/φ13×R2 Materials Grades ℓ ae ap n -1 Vf ℓ ae ap n -1 Vf (mm) (mm) (mm) (min ) (mm/min) (mm) (mm) (mm) (min ) (mm/min) Carbon steel 25 4.2 0.40 6,000 7,200 30 5.6 0.50 5,000 6,000 S50C, S55C 50 4.2 0.40 6,000 6,000 60 5.6 0.40 5,000 5,000 (C50, C55) JC8015 75 4.2 0.25 6,000 6,000 90 5.6 0.25 5,000 5,000 Below 250HB 100 4.2 0.20 6,000 6,000 120 5.6 0.20 5,000 5,000 Mold steel 25 4.2 0.40 5,700 6,800 30 5.6 0.40 4,700 5,600 HPM7, PX5, NAK80, P20 50 4.2 0.40 5,700 5,700 60 5.6 0.40 4,700 4,700 (1.2311, P20) JC8015 75 4.2 0.25 5,700 5,700 90 5.6 0.25 4,700 4,700 30-43HRC 100 4.2 0.20 5,700 5,700 120 5.6 0.20 4,700 4,700 Die steel 25 4.2 0.40 5,700 6,800 30 5.6 0.40 4,700 5,600 SKD61, SKD11 50 4.2 0.40 5,700 5,700 60 5.6 0.40 4,700 4,700 (1.2344, 1.2379) JC8015 75 4.2 0.25 5,700 5,700 90 5.6 0.25 4,700 4,700 Below 255HB 100 4.2 0.20 5,700 5,700 120 5.6 0.20 4,700 4,700 25 4.2 0.40 5,400 6,400 30 5.6 0.40 4,500 5,400 Stainless steel 50 4.2 0.40 5,400 5,400 60 5.6 0.40 4,500 4,500 SUS304 JC8015 Below 250HB 75 4.2 0.25 5,400 5,400 90 5.6 0.25 4,500 4,500 100 4.2 0.20 5,400 5,400 120 5.6 0.20 4,500 4,500 Hardened die steel 25 4.2 0.20 4,700 5,600 30 5.6 0.20 4,000 4,800 SKD61, DAC, DHA 50 4.2 0.20 4,700 4,700 60 5.6 0.20 4,000 4,000 (1.2344, 1.2379) JC8015 75 4.2 0.15 4,700 4,700 90 5.6 0.15 4,000 4,000 40-50HRC 100 4.2 0.10 4,700 4,700 120 5.6 0.10 4,000 4,000 Grey & Nodular 25 4.2 0.40 5,100 6,100 30 5.6 0.40 4,200 5,000 cast iron 50 4.2 0.40 5,100 5,100 60 5.6 0.40 4,200 4,200 FC, FCD (GG, GGG) JC8015 75 4.2 0.25 5,100 5,100 90 5.6 0.25 4,200 4,200 Below 300HB 100 4.2 0.20 5,100 5,100 120 5.6 0.20 4,200 4,200 R0.5 ap×0.60 R0.5 ap×0.60 Depth of cut adjustment Corner R1 ap×0.70 Corner R1 ap×0.70 by corner radius radius R2 ap×1.0 radius R1.5 ap×0.85 (ap × ratio) R2 ap×1.0 ※ Recommend to reduce depth of cut ap according to above table with keeping feed speed ℓ: Overhung length, ap: Depth of cut, ae: Pick feed, n: Spindle speed, Vf: Feed speed ■ NOTE 1) The cutting parameters to be adjusted according to the machine rigidity or work rigidity. 2) In case chatter occurrs, recommend to reduce depth of cut or feed speed. 3) If machine does not have enough power, recommend to reduce depth of cut first and reduce spindle speed and feed speed. 4) Use air blow to flush the chips out. 5) In case of 50-55HRC (Hardened die steel), recommend to reduce 30% above ap, n, Vf. 6) In case of good surface requirement, recommend to reduce feed speed. 7) In case of ramping, ramping angle up to 2° 30′is recommended. 8) In case of slotting with overhung length exceeding 5 x Dc, recommend to reduce depth of cut and feed speed. ★ Instructions for mounting insert Dimensions (mm) Recommended torque 1. Clean the insert seat carefully. φDc (N・m) 6 0.5 2. Clean the insert, especially hole and location face. 8 0.9 3. Change the clamp screw when the screw gets worn out. 10 1.2 4. Please use torque wrenches to tighten the clamp screw. 12 2.0 Recommend to use Torque control wrenches (C180) 16 3.0 See the right table for recommended tightening torque. 20 4.0 C206