WF CDX Coolant hole Fig. DCONh7 DMIN WF CDX DCONh7 Milling Other applications Grooving end mill for M/C MGI DMIN CW CW LU LU LF LF Fig. 1 Fig. 2 Toolholder dimensions Availa-bility Dimension (mm) Spare partsClamp setScrewWrench (Torx)Wrench (hex.) Description R DMIN DCON LF LU CDX CW CWmin.max. WF Applicableinserts MGI 1420-1SS N 14 20 100 20 2.2 1 3 6.8 No 1 - - SB-4065TR FT-15 - GVR...-020SS MGI 1620-1S N 16 20 110 25 2.2 1 3.4 7.8 No 1 - - SB-4085TR FT-15 - GVR...-020S M MGI 2020-1A N 20 20 110 30 2.2 1 3.4 9.8 No 2 CPS-5F - - FT-15 - GVR...-020AGVR...-...AR MGI 2220-1B N 22 20 110 30 2.8 1.45 4 11 No 2 CPS-5F - - FT-15 - GVR...-020BGVR...-...BR MGI 3225-1C N 32 25 120 35 5.5(4.5) 2.8 4 16 No 2 - CPS-6F - - LW-3 GVR...-020C CDX shows available grooving depth. GVR280-020C, GVR300-020C is available to the groove depth up to 4.5 mm. GVR430 ~ 500-020C can be installed to MGI3225-1C , but not recommended for steel machining because of toolholder‘s rigidity. Grooving end mill MGI Recommended cutting conditions Grooving end mill MGI Recommended insert grades (Vc: m/min) Cermet MEGACOAT PVDCoated carbide Carbide Workpiece material fz (mm/t) TN90 TC40 TC60 PR1225 PR930 KW10 Carbon steel 0.05~0.15 ★120~200 ✩120~200 ✩100~180 ★80~150 ✩80~150 - Alloy steel 0.05~0.15 ★120~200 ✩120~200 ✩100~180 ★80~150 ✩80~150 - Mold steel 0.03~0.12 ★100~180 ✩100~180 ✩80~150 ★60~130 ✩60~130 - Stainless steel 0.03~0.12 ✩100~180 ✩100~180 ★80~150 ★60~130 ✩60~130 - Cast iron 0.05~0.2 ★100~150 ✩100~150 - - - ★80~150 Non-ferrous metals 0.05~0.2 - - - - - ★100~300 Use down-cut machining. ★: 1st Recommendation ✩: 2nd Recommendation N : Standard item R : Right hand only L : Left hand only U : Check availability MVG M217