GSX MILL 4 Flute Endmills Anti-vibration Type 4 GSXVL 4000-2.5D Type Flutes 4 Coated Carbide Carbon Steel Alloy Steel Pre-hardened Tempered Steel Die Steel Hardened Steel Stainless Ti Alloy Heat Resistant A loy Cast Iron Aluminum Copper Alloy Graphite CFRP Steel 45 to 55 55 to 60 60 to 65 Steel Alloy HRC HRC HRC Flutes G G G G G G S G S S Coating Corner Side Milling Groove Milling Groove Finishing Face Milling Helical Milling Ramping DC ±0.01 DMM h5 APMX LU LF Helix Angle ■ Body  Dimensions (mm) Cat. No. Stock Cutting diameter Depth of cut Cutting Edge Length Total Length Shank diameter DC APMX LU LF DMM GSXVL 4020-2.5D D 2.0 5 6.5 50 4 4030-2.5D D 3.0 8 9.5 50 6 4040-2.5D D 4.0 10 11.5 50 6 4050-2.5D D 5.0 13 14.5 60 6 4060-2.5D D 6.0 15 Q 60 6 GSXVL 4070-2.5D D 7.0 18 20.0 70 8 4080-2.5D D 8.0 20 Q 80 8 4090-2.5D D 9.0 23 25.0 90 10 4100-2.5D D 10.0 25 Q 90 10 4110-2.5D D 11.0 28 30.5 90 12 GSXVL 4120-2.5D D 12.0 30 Q 90 12 4140-2.5D D 14.0 35 37.5 110 16 4150-2.5D D 15.0 38 41.0 110 16 4160-2.5D D 16.0 40 Q 115 16 4180-2.5D D 18.0 45 48.0 120 20 GSXVL 4200-2.5D D 20.0 50 Q 125 20 4250-2.5D D 25.0 63 Q 140 25 Grade: ACF20 ■ Endmill Identification (GSXMILL Series Only) I GSXVL 4 020 - 2.5D Endmills ① ② ③ ④ Coated Series Code No. of Flutes Diameter Cutting Edge Length Square 2 Flutes 3 Flutes 4 Flutes 6 Flutes Regrinding Instructions 8 Flutes Cautions for Regrinding GSX Anti-vibration Type t5PSFEVDFHSJOEJOHUFNQFSBUVSF JUJTSFDPNNFOEFEUPVTFDPPMBOU t3FNPWFXFBSPSEBNBHFPOUIFUPPMBTNVDIBTQPTTJCMFJOFBDIHSJOEJOHTUFQ t5PJNQSPWFUIFQFSGPSNBODFPGSFHSPVOEJUFNT JUJTSFDPNNFOEFEUPBUUBDISPVOENBSHJO [GSXVL4000-2.5D] POSBEJBMDVUUJOHFEHF t8IJMFTPNFBOUJWJCSBUJPOFGGFDUXJMMCFXPSLFEFWFOJGSPVOENBSHJOBSFOPUBUUBDIFE CVU JUNBZOPUCFQPTTJCMFUPPCUBJOTVGmDJFOUQFSGPSNBODF Radius (1) Peripheral Grinding (2) Regrinding Radial Cutting Edge (Rake Face and Relief) Ballnose DLC t(SJOEUIFQFSJQIFSZPGUIFFOENJMM t/FYU HSJOESBEJBMDVUUJOHFEHFT *GOPUDSFBUJOHSPVOEMBOETXIFOSFHSJOEJOH UIJTTUFQJTOPUSFRVJSFE t"GUFSHSJOEJOHUXPDVUUJOHFEHFTXJUITBNFIFMJYBOHMF HSJOEUIF SFNBJOJOHUXPDVUUJOHFEHFT tWhen grinding the relief, leave round margin with approximately 0.05 mm width. *GSBLFGBDFTBSFOPUEBNBHFE UIFZEPOPUOFFEUPCFHSPVOE *GOPUBUUBDISPVOENBSHJO HSJOEUIFSFMJFGBTGBSBTUIFDVUUJOHFEHF  SUMIDIA FOTVSJOHUIBUOPVOHSPVOEBSFBTPGUIFSBEJBMDVUUJOHFEHF Coat (3) Regrinding Gash and End Cutting Edge (4) Recoating 103.5° Recoating/Before Use Pitch of End Cutting t$IFDLUIBUUIFSFBSFOPXFBSPSEBNBHFPOUIFSFHSPVOEUPPM t$IFDLUIBUUIFSFBSFOPCVSST FUD POUIFDVUUJOHFEHF Edge When New Long 76.5° t"GUFSSFHSJOEJOH DPBUDVUUJOHFEHFTCFGPSFVTF 8IFOVTJOHVODPBUFENPEFMT UIJTTUFQJTOPUSFRVJSFE Neck Design of Tool before regrind 3FHSJOEJOH"MMPXBODFPG&OE$VUUJOH&EHF 4QFDJmDBUJPOTPGUPPMCFGPSFSFHSJOE 1FSJQIFSBM3PVOE.BSHJO D &EHF")FMJY"OHMFPG-POH&OE$VUUJOH&EHF¡ "JN'PSNN Uncoated Pitch of End Cutting &EHF#)FMJY"OHMFPG4IPSU&OE$VUUJOH&EHF¡ "QQSPY¡ 1JUDI"OHMFPG&OE$VUUJOH&EHF¡¡¡¡ Edge When Reground E 1FSJQIFSBM oEfdge 3FMJFG"OHMF t-BTUMZ HSJOEUIFFOEDVUUJOHFEHF "QQSPY¡ " RCarodsiaslSCeuctttiion"ng ¡ # ¡ t5IFQJUDIBOHMFPGUIFFOEDVUUJOHFEHFJT¡¡GPSOFXFOENJMMT  CVUEVFUPUIFUPPMTVOFRVBMMZMFBE QJUDIBOHMFDIBOHFTEFQFOEJOHPO CBN DVUUJOHFEHFMFOHUI $POTJEFSXIBUUIFDVUUJOHFEHFMFOHUIXJMMCFBGUFSSFHSJOEJOH NFBTVSF # # # QJUDIBOHMFTDBOEEJOBEWBODF BOEUIFOSFHSJOE PCD t"TXJUISFHSJOEJOHUIFSBEJBMDVUUJOHFEHFJOTUFQ  BGUFSHSJOEJOHUXP DVUUJOHFEHFTXJUITBNFIFMJYBOHMF HSJOEUIFSFNBJOJOHUXPDVUUJOHFEHFT "QQSPY¡ " 8IFOSFHSJOEJOHSBEJBMDVUUJOHFEHFTPOMZ UIJTTUFQJTOPUSFRVJSFE " Please download the data from the following URL. [www.sumitool.com/en/ products/cutting-tools/endmills/ gsx.html] I52