Copy Mills Copy Mills • M270™ Series Recommended Starting Speeds „Recommended Starting Speeds [m/min] MaterialGroup TN2505 TN2510 TN2525 1 550 420 360 660 580 540 550 420 360 2 320 240 205 410 370 330 320 240 205 3 320 240 205 370 330 305 320 240 205 P 4 – – – 275 260 230 – – – 5 – – – 330 300 275 – – – 6 – – – 230 205 175 – – – 1 – – – 270 240 210 – – – M 2 – – – 245 210 190 – – – 3 – – – 190 175 150 – – – 1 400 300 250 420 360 300 – – – K 2 540 365 280 360 300 250 – – – 3 310 190 155 300 250 200 – – – 1 – – – – – – – – – N 2 – – – – – – – – – 3 – – – – – – – – – 1 – – – – – – – – – 2 – – – – – – – – – S 3 – – – – – – – – – 4 – – – – – – – – – 1 175 140 95 145 110 70 130 90 60 H 2 175 140 95 145 110 70 130 90 60 3 140 115 80 115 80 45 – – – NOTE: FIRST choice starting speeds are in bold type. As the average chip thickness increases, the speed should be decreased. Recommended Starting Feeds „Recommended Starting Feeds [mm] Light General Heavy Machining Purpose Machining Programmed Feed per Tooth (fz) as a % of Radial Depth of Cut (ae) Insert Insert Geometry 5% 10% 20% 30% 40–100% Geometry TF 0,12 0,37 0,62 0,09 0,26 0,43 0,06 0,19 0,31 0,06 0,17 0,27 0,05 0,15 0,25 TF NOTE: Use “Light Machining” value as starting feed rate. widia.com M123