RECOMMENDED CUTTING CONDITIONS y MVE (inch) Mild Steel ( < 180HB) Carbon Steel, Alloy Steel (180 ─ 280HB) Work Material AISI 1010 etc. AISI 1045, 4140 etc. DC Cutting Speed vc Feed fr Cutting Speed vc Feed fr (Min. ─ Max.) (Min. ─ Max.) (Min. ─ Max.) (Min. ─ Max.) inch mm (SFM) (IPR) (SFM) (IPR) .1260 3.2 215 (165─245) .0039 (.0024 ─ .0051) 195 (150─230) .0039 (.0024 ─ .0051) .1575 4.0 230 (180─260) .0047 (.0031 ─ .0063) 215 (165─245) .0047 (.0031 ─ .0063) .1969 5.0 230 (180─260) .0059 (.0039 ─ .0079) 215 (165─245) .0059 (.0039 ─ .0079) .2480 6.3 265 (195─295) .0079 (.0051 ─ .0102) 245 (195─280) .0079 (.0051 ─ .0102) .3150 8.0 280 (215─330) .0091 (.0071 ─ .0110) 265 (195─295) .0091 (.0071 ─ .0110) .3937 10.0 295 (230─345) .0106 (.0087 ─ .0126) 280 (215─330) .0106 (.0087 ─ .0126) .4724 12.0 310 (245─360) .0122 (.0110 ─ .0134) 295 (230─345) .0122 (.0110 ─ .0134) .6299 16.0 330 (260─375) .0130 (.0110 ─ .0150) 295 (230─345) .0130 (.0110 ─ .0150) .7874 20.0 330 (260─375) .0118 (.0118 ─ .0157) 295 (230─345) .0118 (.0118 ─ .0157) Carbon Steel, Alloy Steel (280 ─ 350HB) Austenitic Stainless Steel ( < 200HB) Work Material AISI 4340 etc. AISI 304, 316 etc. DC Cutting Speed vc Feed fr Cutting Speed vc Feed fr (Min. ─ Max.) (Min. ─ Max.) (Min. ─ Max.) (Min. ─ Max.) inch mm (SFM) (IPR) (SFM) (IPR) .1260 3.2 180 (130─215) .0035 (.0024 ─ .0047) 65 (50─80) .0028 (.0020 ─ .0031) .1575 4.0 195 (150─230) .0043 (.0028 ─ .0055) 65 (50─80) .0031 (.0024 ─ .0039) .1969 5.0 195 (150─230) .0055 (.0035 ─ .0071) 65 (50─80) .0039 (.0028 ─ .0051) .2480 6.3 230 (180─260) .0071 (.0043 ─ .0094) 80 (65─100) .0051 (.0035 ─ .0067) .3150 8.0 245 (195─280) .0083 (.0063 ─ .0098) 80 (65─100) .0055 (.0039 ─ .0071) .3937 10.0 265 (195─295) .0091 (.0075 ─ .0106) 80 (65─100) .0063 (.0047 ─ .0075) .4724 12.0 280 (215─330) .0102 (.0091 ─ .0114) 80 (65─100) .0071 (.0059 ─ .0079) .6299 16.0 280 (215─330) .0114 (.0094 ─ .0130) 80 (65─100) .0075 (.0059 ─ .0091) .7874 20.0 280 (215─330) .0118 (.0102 ─ .0134) 80 (65─100) .0079 (.0059 ─ .0094) Gray Cast Iron (< 350MPa) Ductile Cast Iron ( < 450MPa) Work Material AISI No.45B etc. AISI 60-40-18 etc. DC Cutting Speed vc Feed fr Cutting Speed vc Feed fr (Min. ─ Max.) (Min. ─ Max.) (Min. ─ Max.) (Min. ─ Max.) inch mm (SFM) (IPR).12603.2230 (180─260).0039 (.0024 ─ .0051)(SFM)215 (165─245)(IPR).0039 (.0024 ─ .0051)M .1575 4.0 230 (180─260) .0047 (.0031 ─ .0063) 215 (165─245) .0047 (.0031 ─ .0063) .1969 5.0 230 (180─260) .0059 (.0039 ─ .0079) 215 (165─245) .0059 (.0039 ─ .0079) .2480 6.3 245 (195─280) .0079 (.0051 ─ .0102) 230 (180─260) .0079 (.0051 ─ .0102) .3150 8.0 245 (195─280) .0098 (.0071 ─ .0122) 230 (180─260) .0091 (.0071 ─ .0110) .3937 10.0 245 (195─280) .0114 (.0087 ─ .0138) 230 (180─260) .0106 (.0087 ─ .0126) .4724 12.0 265 (195─295) .0130 (.0110 ─ .0146) 245 (195─280) .0122 (.0110 ─ .0134) .6299 16.0 265 (195─295) .0138 (.0110 ─ .0165) 245 (195─280) .0130 (.0110 ─ .0150) .7874 20.0 280 (215─330) .0146 (.0118 ─ .0173) 265 (195─295) .0138 (.0118 ─ .0157) Note 1) For the spindle revolution of diameters not shown in the table, please adjust to the conditions of larger and closest diameter, or calculate from the cutting speed of the closest diameter. For the feed rate per revolution, please set up within the recommended feed rate of the closest diameter appropriately. M075 DRILLING