External grooving Blade and toolholder KGDS-S GMM/GMG/GMGA/FGG Carbon steel / Alloy steel Q P Stainless steel P M Cast iron Q K Non-ferrous metals Q N Titanium alloy Q S Hard materials (~40 HRC) N H Hard materials (40 HRC ~) Cermet Dimension Tolerance Carbide Applicable toolholder No. of edges PVD CVD - - Insert Description CW CW CW S RE INSL min. max. CR9025 PR930 KW10 TN90 CW±0.02 RE INSL GMGA 6020-300R 2 6 4.3 3.0 20 -0.02 +0.02 U G45 S G CW±0.02 INSL RE GMGA 8030-400R 2 8 5.5 4.0 20 -0.02 +0.02 U G45, G76 S Full R / Copying / Sharp cutting oriented / Precision class Grooving rH M 2° W±0.05 2° L GMM 3014-04 2 3 4.3 0.4 14 - 0.05 + 0.05 U U G48 H Chip control oriented / M class RE CW±0.05 INSL GMM 3014-15R 2 3 4.3 1.5 14 - 0.05 + 0.05 U G48 S Chip control oriented / M class / Full R / Copying FGGL 3020-02 U U U RE 2 3 4.3 0.2 20 -0.02 +0.02 FGGR 3020-02 U U U CW±0.02 2° FGGL 4020-04 U U U 2° INSL 2 4 4.3 0.4 20 -0.02 +0.02 G48 FGGR 4020-04 U U U S Chip control oriented / Precision FGGL 5020-04 U U class 2 5 4.3 0.4 20 -0.02 +0.02 FGGR 5020-04 U U Handed insert shows Right-hand N : Standard item R : Right hand only L : Left hand only U : Check availability Recommended cutting conditions: G121 G42