Solid Carbide Endmills H680 - High Precision Short Flute Ball Nose Type - 2F 鎢鋼球型銑刀 - 短刃型 - 2 刃 . SICO-TH Nano coating provides a superior wear and heat resistance. . Suitable for HRC 50 and over HRC 50 Hardened Steel, also maximum up to HRC 65. . Ultra grain carbide rods with better abrasion resistance. . R tolerance ±5µm with high precision and high performance on Finishing working situation. . Special geometry design, suitable for high hardened working materials. Radius Dia. CL EFF-L OAL Shank Flutes Order No. (R) (d) (L1) (L2) (L) (D) (F) EHBPF2 EHBUF2 EHBPF201000S 0.5R 1.0 1 2 50 4 2 EHBPF202000S 1.0R 2.0 2 4 50 4 2 EHBPF204000S 2.0R 4.0 4 8 50 6 2 EHBUF203000S 1.5R 3.0 3 6 50 6 2 EHBUF204000S 2.0R 4.0 4 8 50 6 2 EHBUF206000S 3.0R 6.0 6 12 50 6 2 R EHBUF208000S 4.0R 8.0 8 16 60 8 2 EHBUF210000S 5.0R 10.0 10 20 75 10 2 L1 EHBUF212000S 6.0R 12.0 12 24 75 12 2 L2 L D 65 Cutting conditions ( 建議切削參數表 ) : Table 007 R Tolerance ≦ R3 ± 0.005 ≧ R4 ± 0.007 A018