Solid Carbide Endmills G550 - Inner Radius Type - 2F / 4F 鎢鋼內 R 角銑刀 - 2 / 4 刃 . UNICO Coating provides superior wear resistance and reduces the coefficient of friction. Solid Carbide Endmills . Suitable for HRC 30 to HRC 55 Ordinary Steel, Alloy Steel, Cast Iron, Heat-Resistant Steel, etc. . Inner radius tools are suitable for chamfering with round corner application. E P I FA 2 Corner Dia. OAL Shank Flutes Order No. Radius (d1) (L) (D) (F) E P I S A 2 (R) E P I FA 4 EPIFA202905U 0.5R 2.9 50 4 2 E P I S A 4 EPISA204905U 0.5R 4.9 50 6 2 EPIFA201910U 1.0R 1.9 50 4 2 EPISA203910U 1.0R 3.9 50 6 2 EPISA205910U 1.0R 5.9 60 8 2 EPISA204915U 1.5R 4.9 60 8 2 d R EPISA205920U 2.0R 5.9 75 10 2 EPISA204925U 2.5R 4.9 75 10 2 EPISA205930U 3.0R 5.9 75 12 2 EPISA203940U 4.0R 3.9 75 12 2 EPISA205950U 5.0R 5.9 75 16 2 EPISA203960U 6.0R 3.9 75 16 2 EPIFA402905U 0.5R 2.9 50 4 4 L EPISA404905U 0.5R 4.9 50 6 4 EPIFA401910U 1.0R 1.9 50 4 4 EPISA403910U 1.0R 3.9 50 6 4 EPISA405910U 1.0R 5.9 60 8 4 EPISA404915U 1.5R 4.9 60 8 4 EPISA405920U 2.0R 5.9 75 10 4 EPISA404925U 2.5R 4.9 75 10 4 EPISA405930U 3.0R 5.9 75 12 4 D EPISA403940U 4.0R 3.9 75 12 4 EPISA405950U 5.0R 5.9 75 16 4 EPISA403960U 6.0R 3.9 75 16 4 Cutting conditions ( 建議切削參數表 ) : Table 054 0.05 D d 3° 0.05 3° A117