Indexable Drills Application Data • Top Cut 4™ Top Cut 4 • Cast Iron • 2 x D/3 x D • Speed Chart • Metric Recommended Cutting Speed by Diameter (m/min) Insert Size A Insert Size B Insert Size C Insert Size D Top Cut 4 TCF040203AC TCF060203BC TCF070304CC TCF090305DC TCF040204AP TCF050204BP TCF070306CP TCF080308DP 12,00–13,99mm 14,00–18,99mm 19,00–23,99mm 24,00–29,99mm Material Pocket Group Condition Seat Geometry Grade min Start max min Start max min Start max min Start max P V34 WPK10CH S 120 140 180 140 170 250 150 180 260 160 200 280 C V34 WU25CH P V34 WU25CH 1 U 110 120 160 130 160 240 140 170 250 150 180 260 C V34 WU40PH P V34 WU40PH I 100 110 140 120 150 230 130 160 240 140 170 260 C V34 WU40PH P V34 WPK10CH S 120 140 180 130 160 240 140 180 250 150 180 260 C V34 WU25CH P V34 WU25CH K 2 U 110 120 160 120 150 230 130 160 240 140 160 250 C V34 WU40PH P V34 WU40PH I 100 110 140 120 150 220 130 160 240 140 160 250 C V34 WU40PH P V34 WPK10CH S 120 140 160 130 160 240 140 170 240 150 170 250 C V34 WU25CH P V34 WU25CH 3 U 110 120 140 120 150 230 130 160 230 140 160 240 C V34 WU40PH P V34 WU40PH I 90 100 120 120 150 230 130 160 230 140 160 220 C V34 WU40PH NOTE: For 4 x D, it is highly recommended to start with feed and speed values reduced by 10% less than above recommendations. For 5 x D, diameter range 12–23,99mm (insert sizes A to C), it is highly recommended to start with feed and speed values reduced by 20% less than above recommendations. For 5 x D, diameter range 24–68mm (insert sizes D to H), it is highly recommended to start with feed and speed values reduced by 15% less than above recommendations. For 4 x D and 5 x D, it is recommended to reduce the feed rate during entry and exit by 30–50%. Condition: S = stable conditions, U = unstable cutting conditions, I = interrupted cutting conditions Pocket Seat: P = periphery insert, C = centre insert widia.com V33 Indexable Drills