Solid Carbide Endmills G550 - High Helix ∙ Long Flute ∙ Square ∙ 6F .UNICO Coating provides superior wear resistance and reduces the coefficient of friction .Suitable for HRC 30 to HRC 55 Ordinary Steel, Alloy Steel, Cast Iron, Heat-Resistant Steel, FRP, etc. .Greater shearing action results in increased speeds and feeds and faster stock removal. .Strong helix design provides hi speed milling capabilities. .Six flute for good surface milling. Order No. Dia. (d) CL(L1) OAL Shank Flutes(L)(D)(F) EPSCH EPSCH606000U 6 30 75 6 6 EPSCH608000U 8 35 100 8 6 EPSCH610000U 10 45 100 10 6 P M K N S H EPSCH612000U 12 45 100 12 6 ● ● ● ○ EPSCH616000U 16 70 150 16 6 d L1 L D (h6) Cutting conditions : Table 029 d Tolerance d≤6 0 ~ -0.03 6 < d ≤ 12 0 ~ -0.04 d > 12 0 ~ -0.05 A081