Recommended cutting conditions

Recommended chipbreaker (fz: mm/t)Recommended insertgrades (Vc: m/min)
Workpiece materialRD08 type: ap=2m RP12 type: ap=3mm, RP10 type: ap= m, RP16 type: ap=2.5mm 4mmMEGACOAT NANOCVD Coated carbide
RDMT-GM RPMT-GMRDGT-GM RPGT-GMRDGT-SM RPGT-SMRDMT-GH RPMT-GHPR1535PR1525PR1510CA6535
Carbon steel★ 0.1~0.2~0.3✩ 0.1~0.2~0.3✩ 0.06~0.15~0.2✩ 0.15~0.3~0.35✩ 120~180~250★ 120~180~250--
Alloy steel★ 0.1~0.2~0.3✩ 0.1~0.2~0.3✩ 0.06~0.15~0.2✩ 0.15~0.3~0.35✩ 100~160~220★ 100~160~220--
Mold steel★ 0.1~0.15~0.25✩ 0.1~0.15~0.25✩ 0.06~0.12~0.2✩ 0.15~0.2~0.3✩ 80~140~180★ 80~140~180--
Stainless steel (Austenitic related)✩ 0.1~0.15~0.2✩ 0.1~0.15~0.2★ 0.06~0.12~0.2✩ 0.15~0.3~0.25★ 100~160~200✩ 100~160~200--
Stainless steel (Martensitic related)✩ 0.1~0.15~0.2✩ 0.1~0.15~0.2★ 0.06~0.12~0.2✩ 0.15~0.2~0.25✩ 150~200~250--★ 180~240~300
Stainless steel (Precipitation Hardening)✩ 0.1~0.15~0.2★ 0.1~0.15~0.2✩ 0.06~0.12~0.2✩ 0.15~0.2~0.25★ 90~120~150---
Gray cast iron★ 0.1~0.2~0.3✩ 0.1~0.2~0.3-✩ 0.15~0.3~0.35--★ 120~180~250-
Nodular cast iron★ 0.1~0.15~0.25✩ 0.1~0.15~0.25-✩ 0.15~0.2~0.3--★ 100~150~200-
Ni-base heat-resistant alloys✩ 0.1~0.12~0.15★ 0.1~0.12~0.15✩ 0.06~0.1~0.15✩ 0.12~0.15~0.2✩ 20~30~50--★ 20~30~50
Titanium alloys✩ 0.1~0.12~0.15✩ 0.1~0.12~0.15★ 0.06~0.1~0.15-★ 40~60~80-✩ 30~50~70-
  • Machining with coolant is recommended for Ni-base heat-resistant alloys and titanium alloys. ★: 1st Recommendation ✩: 2nd Recommendation
  • RDGT/RPGT are recommended for stainless steel, Ni-base heat-resistant alloys and titanium alloy.
  • The bold-faced number indicates a center value of recommended cutting condition. Adjust the cutting speed and the feed rate within the above conditions according to the actual machining situation.
  • Recommended feed rate in the table is the reference value when ap is RE/2. (2 mm for RD**08/2.5 mm for RP**10/3mm for RP**12/4 mm for RP**16) For other ap, calculate the recommended feed rate based on the conversion factor below.
  • For MRX16-S16-08-2T(-160), MRX16-W-08-2T, MRX20-S20-10-2T(-180) and MRX20-W20-10-2T, set the feed rate not higher than 50% of the recommended cutting conditions.

Conversion factor for feed per tooth by depth of cut (ap)

InsertMax apConversion factor for feed per tooth fz
.ap=0.5 mmap=1 mmap=1.5 mmap=2 mmap=2.5 mmap=3 mmap=4 mmap=5 mmap=6 mmap=8 mm
RD08 type (GM/SM/GH chipbreaker)4mm1.71.31.11 (Standard)0.90.80.8---
RP10 type (GM/SM/GH chipbreaker)5mm1.91.41.211 (Standard)0.90.80.8--
RP12 type (GM/SM/GH chipbreaker)6mm2.11.51.31.111 (Standard)0.90.80.8-
RP16 type (GM/SM/GH chipbreaker)8mm2.41.71.41.31.11.11 (Standard)0.90.80.8
  • Example (ROMU12 type, carbon steel, GM chipbreaker, ap=1mm)

fz=0.2 mm/t × 1.5 = fz=0.3 mm/t

(Reference value for carbon steel and GM chipbreaker) (Conversion factor for ROMU12 type, ap=1mm) (Recommended feed rate)

Recommended cutting conditions for pecking/ramping/helical milling

Tool spec.Max. apPeckingRamping (Slant milling)Helical milling
Min. Cutting lengthMin cuttin dia
InsertTool dia.apMax. cutting depth PdX for flat bottom surfaceMax. ramping angle RMPXtan RMPXCutting length L at max. ramping angleMin. cutting dia. øDh1. g . for flat bottom facing øDh2Max. cutting dia. øDh3
160.790.14128202430
RD08 type20414130.15825263238
25.180.08745364248
200.6110.08757263038
251610°0.17628334048
RP10 t325230.10547475462
ype401.9310.07071637078
50410.05295839098
63540.035143109116124
32210.15837435262
40290.08768596878
RP50390.07085798898
12 type6362.452105114124
80690.035171139148158
100890.017343179188198
402511°0.19441516478
50350.12365718498
63480.07011497110124
RP16 type8083.4650.052152131144158
100850.035229171184198
1251100.017458221234248
  • Above is the value considering the clearance 1mm between the tool body and the workpiece. Unit: mm