GSX MILL Endmills (2 Flutes) 2 GSX 20000C-3D Type Flutes 2 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 S G G G G G S G S S Coating Corner Side Milling Groove Milling Groove Finishing Face Milling Spot Facing DC DMM h5 30° APMX DC Tolerance LU D ≤ 3.0 0 –0.015 LF 3.0 < D ≤ 12 0 –0.020 Helix Angle 12.0 < D 0 –0.030 ■ Body  Dimensions (mm) Cat. No. Stock Cutting diameter Depth of cut Cutting Edge Length Total Length Shank diameter DC APMX LU LF DMM GSX 20050C-3D D 0.5 1.5 1.9 40 4 20100C-3D D 1.0 3.0 4.0 40 4 20150C-3D D 1.5 4.5 5.5 40 4 20200C-3D D 2.0 6.0 7.0 40 4 20250C-3D D 2.5 7.5 8.5 40 4 GSX 20300C-3D D 3.0 9.0 10.5 50 6 20350C-3D D 3.5 11.0 12.5 50 6 20400C-3D D 4.0 12.0 13.5 50 6 20450C-3D D 4.5 14.0 15.5 50 6 20500C-3D D 5.0 15.0 17.0 50 6 GSX 20550C-3D D 5.5 17.0 19.0 50 6 20600C-3D D 6.0 18.0 Q 50 6 20650C-3D D 6.5 20.0 22.0 70 8 20700C-3D D 7.0 21.0 23.0 70 8 20750C-3D D 7.5 23.0 25.0 70 8 GSX 20800C-3D D 8.0 24.0 Q 70 8 20850C-3D D 8.5 26.0 28.0 75 10 20900C-3D D 9.0 27.0 29.0 75 10 20950C-3D D 9.5 29.0 31.0 75 10 21000C-3D D 10.0 30.0 Q 90 10 GSX 21050C-3D D 10.5 32.0 34.5 90 12 I 21100C-3D D 11.0 33.0 35.5 90 12 21150C-3D D 11.5 35.0 37.5 90 12 21200C-3D D 12.0 36.0 Q 90 12 Coated Endmills 21300C-3D D 13.0 39.0 42.5 100 16 GSX 21400C-3D D 14.0 42.0 45.5 110 16 21500C-3D D 15.0 45.0 48.5 110 16 21600C-3D D 16.0 48.0 Q 110 16 Square 21700C-3D D 17.0 51.0 55.5 110 20 21800C-3D D 18.0 54.0 58.5 120 20 2 Flutes GSX 21900C-3D D 19.0 57.0 61.5 120 20 3 Flutes 22000C-3D D 20.0 60.0 Q 120 20 22500C-3D D 25.0 75.0 Q 130 25 4 Flutes Grade: ACF20 6 Flutes 8 Flutes Radius ■ Endmill Identification (GSXMILL Series Only) Ballnose GSX 2 0100 C - 3D DLC ① ② ③ ④ ⑤ Series Code No. of Flutes Diameter Cutting Edge Cutting Edge Length SUMIDIA (S: Sharp Edge Coat C: Gash Land Long Neck Uncoated CBN PCD I30 D mark: Standard stocked item (expanded item)