DC DCON EP7020 SQUAREBALLRADIUSTAPERCHAMFERROUGHINGEXCHANGEABLE HEAD END MILLS 45° Ball nose head, 4 flute, Irregular curve Carbon Steel, Alloy Steel, Cast Iron Tool Steel, Pre-hardened Steel,Hardened Steel Hardened Steel(<30HRC)(< 45HRC)(< 55HRC)Hardened Steel(>55HRC)AusteniticTitanium Alloy,Stainless SteelHeat Resistant AlloyCopper AlloyAluminum AlloyCARBIDE e u e e u Type1 RE APMX LH RE < 6 RE>6 ±0.010 ±0.020 DC <12 DC>12 0 0 - 0.020 - 0.030 aIrregular curve cutting edge controls vibration and achieves stable machining. (mm) Grade Order Number RE DC APMX LH DCON No. ofFlutes Type IMX10B4HV10010 5 10 10.5 16 9.7 4 a 1 IMX12B4HV12012 6 12 12.5 19 11.7 4 a 1 IMX16B4HV16016 8 16 16.5 24 15.5 4 a 1 IMX20B4HV20021 10 20 21 30 19.5 4 a 1 IMX25B4HV25026 12.5 25 26 37.5 24.5 4 a 1 Note 1) The fastening size of the holder and head should be the same. (refer to J002) J J031