ISOWorkpiece materialsHardnessGradesCutting speedFeedper tooth:fz (mm/t)
HBVc (m/min)MJHJAJ
Low carbon steel S15C, etc. C15E4, etc.< 200AH72590 - 2000.05 - 0.10.4 - 0.9-
High carbon steel and alloy steel S55C, SCM440, etc. C55, 42CrMo4, etc.200 - 300AH72590 - 1500.05 - 0.10.4 - 0.9-
Tool steel SKD11, etc. X153CrMoV12, etc.150 - 300AH72580 - 1200.05 - 0.10.4 - 0.9-
Stainless steel SUS304, etc. X5CrNi18-9, etc.-AH14090 - 1500.05 - 0.10.4 - 0.9-
Grey cast irons FC250, etc. 250, etc.150 - 250AH725100 - 1800.05 - 0.10.4 - 0.9-
Ductile cast irons FCD450, etc. 450-10S, etc.150 - 250AH72580 - 1500.05 - 0.10.4 - 0.9-
Aluminium alloys Si < 13%-KS15F300 - 1000--0.08 - 0.2
Aluminium alloys Si ≥ 13%-KS15F100 - 200--0.08 - 0.2
Titanium alloys Ti-6Al-4V, etc.-AH72520 - 500.05 - 0.10.4 - 0.9-
Superalloys Inconel 718, etc.-AH72520 - 350.05 - 0.080.2 - 0.6-
  • To remove excessive chip accumulation use an air blast.
  • Cutting conditions are limited by machine power, workpiece rigidity, and
  • To avoid build up edge on the cutting edges (aluminium machining), use a spindle output. When the cutting width, depth, or overhang length is large, set

water soluble coolant. Vc and fz to the lower recommended values and check the machine power G

  • When cutting an interrupted surface or a casted skin, the feed per tooth (fz) and vibration. should be reduced to the lower recommended value shown in the above table. CAUTIONARY POINTS WHEN USING H J INSERTS

HJ type inserts are designed for high feed machining. TungRec 07 type HJ inserts H

Please note the following when using HJ inserts: Standard conditions 1. The shape of HJ insert differs from that of other inserts (MJ, AJ). However the same insert pocket can be used.

Depth of cut: ap (mm)1.0 0.8 0.6 0.4 0.2SuperSteel Cast Iron alloys Stainless
00.2 Feed p0.4 0.6 0.8 1.0 er tooth:fz (mm/t)
Max. depth of cut APMX (mm)Corner R when programming Main cutting edge length LE (mm)Amount left uncut t (mm)
tR 0.50.4
0.83 R 10.3

2. When using HJ inserts, all the inserts on the cutter body

must be HJ type. Do not use other types of inserts (MJ and AJ

types) with HJ inserts on the same cutter body. 3. When using CAD/CAM, please program it as a radius cutter.

The table below shows the corner R when programming and

RE=

0.8 mm uncut

10° 0.8 3 L

Tool diameter: LE RPG

DC + 0.6 mm Corner R when programming M