External grooving Blade and toolholder KGDS-S GMM/GMN/GMR Non-ferrous metals N N Titanium alloy N S Hard materials (~40 HRC) H Hard materials (40 HRC ~) O N Edge preparation type Applicable toolholder Dimension (mm) Tolerance CBN PCD No. of edges - - Insert Description CW CW CW S RE LE INSL KBN510 KBN525 KPD001 KPD010 min. max. U U GMN 2 1 2 4.3 0.2 2.9 20 - 0.05 + 0.05 E008 U U 0.2 U U GMN 3 1 3 4.3 2.9 20 - 0.05 + 0.05 LE E008 0.4 U U CW±0.05 2° 0.2 U U 2° RE INSL GMN 4 1 4 4.3 2.9 20 - 0.05 + 0.05 G45-G47 E008 0.4 U U S 1-edge 0.2 U U GMN 5 1 5 4.3 2.9 20 - 0.05 + 0.05 E008 0.4 U U G GMN 6 E008 1 6 4.3 0.2 0.4 2.9 20 - 0.05 + 0.05 U U U Handed insert shows Right-hand Available cutting diameter of KGM (for automatic lathe) / KGM-T Grooving (There is a limit to available grooving depth depending on the workpiece diameter.) 20 (CDX, ø40) 18 (CDX, ø130) a.) 30 di ø1 g tin ut (C 0 ø4 25 If the workpiece diameter is large, the available grooving depth becomes smaller due to interference with the toolholder. e.g.) KGMR2525M-3T20+GMN3 KGM (for automatic lathe) possible cutting diameter and available grooving depth Toolholder description DCX (Cutting Dia.) KGM& 0810K-1.5-125 - - - - - - - - - - - - 10 14 16 32 1010□-1.5 … - - - - - - - 20 25 32 40 60 ∞ ∞ ∞ ∞ 1212□-1.5 … - - - - 25 26 28 32 36 40 60 100 0810K-2-125 - - - - - - - - - - - - 10 14 16 32 1010□-2 … - - - - - - - 20 25 32 40 60 ∞ 1212□-2… - - - - 25 26 28 50 ∞ ∞ ∞ ∞ 1616□-2… 32 40 50 60 80 100 ∞ ∞ ∞ ∞ ∞ ∞ 1212□-2.5… - - - - 25 26 28 32 36 40 60 100 1616□-2.5… 32 40 50 60 80 100 ∞ ∞ ∞ ∞ ∞ ∞ 1616□-3… 32 40 50 60 80 100 Available CDX (mm) 16 15 14 13 12.5 12 11 10 9 8 7 6 5 4 3 2 1 KGM-T possible cutting diameter and available grooving depth (GMN, GM& when using 1-edge insert) Toolholder description DCX (Cutting Dia.) KGM& 2012K-2T17 2020K-2T17 - - - - - - - - 66 80 130 260 2525M-2T17 1616H-3T20 - - - - - 40 54 70 100 180 2012K-3T20 2020K-3T20 2525M-3T20 - - - - - 40 90 130 240 ∞ 2020K-4T20 ∞ ∞ 2525M-4T20 ∞ 2525M-4T25 - - 50 140 240 2525M-5T25 ∞ ∞ ∞ ∞ 3232P-5T25 - - 50 280 600 2525M-6T30 100 300 ∞ ∞ ∞ Available CDX (mm) 30 27 25 23 22 20 19 18 17 16 15 14 <13 N : Standard item R : Right hand only L : Left hand only U : Check availability Recommended cutting conditions: G121 G44