Grooving apDMIN CW±0.03 2°2° DMIN CDX 2°2°SSSCW±0.02 CW±0.05 WF No. of edges WF CDX DCON Internal grooving GMM/GMG/GMGA type GMM/GMG/GMGA Carbon steel / Alloy steel P Q P Stainless steel Q P M Cast iron Q P K Non-ferrous metals Q N Titanium alloy Q S Hard materials (~40 HRC) O N H Hard materials (40 HRC ~) Dimension (mm) Tolerance Carbide Cermet Insert Shows GMM2420-02 Description CW S RE INSL CWmin. CW CVD PVD - - Applicable toolholdermax.CR9025PR905PR915PR930KW10TN90 INSL RE GMM 8030-080MW 2 8 5.5 0.8 30 - 0.05 + 0.05 U U U U U Chip control oriented / M class RE G INSL15° GMG 8030-050MG 2 8 5.5 0.5 30 - 0.03 + 0.03 U U U U U KIGM&U ...8KIGMUR ...8 Sharp cutting oriented / Precision class (ground chipbreaker) INSL RE GMGA 8030-400R 2 8 5.5 4 30 - 0.02 + 0.02 U Full R / Copying / Sharp cutting oriented / Precision class If using a full-R insert with KIGM-8 toolholder, you need to modify the corner of insert adapter of toolholder. KIGM (Internal grooving) DMIN LH H CW LF Right-hand shown KIGMU (Internal grooving / Undercut grooving) CW LH H LF Toolholder dimensions Right-hand shown Availabi-lity Dimension (mm) Spare partsClamp boltWrench (hex.) Description R L CDX DMIN DCON H LH ap CW min. CW max. LF WF KIGM& 6540B-8 N N 20 65 40 36 41 8 8 300 41 HH6X20 LW-5 KIGMUR 6540B-8 N 65 40 36 83 2.2 8 8 300 26 CDX shows available grooving depth. ap shows the distance from the internal face of the workpiece. N : Standard item R : Right hand only L : Left hand only U : Check availability Recommended cutting conditions: G122 G76 45° DCON