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 E Insert Size F Insert Size G Insert Size H Top Cut 4 TCF120405EC TCF150406FC TCF180508GC TCF210608HC TCF100408EP TCF120412FP TCF150512GP TCF180614HP 30,00–36,99mm 37,00–45,99mm 46,00–56,99mm 57,00–68,00mm Material Pocket Group Condition Seat Geometry Grade min Start max min Start max min Start max min Start max P V34 WPK10CH S 160 200 280 160 200 280 160 200 280 160 200 280 C V34 WU25CH P V34 WU25CH 1 U 150 180 260 150 180 260 150 180 260 150 180 260 C V34 WU40PH P V34 WU40PH I 140 170 260 140 170 260 140 170 260 140 170 260 C V34 WU40PH P V34 WPK10CH S 150 180 260 150 180 260 150 180 260 150 180 260 C V34 WU25CH P V34 WU25CH K 2 U 140 160 250 140 160 250 140 160 250 140 160 250 C V34 WU40PH P V34 WU40PH I 140 160 250 140 160 250 140 160 250 140 160 250 C V34 WU40PH P V34 WPK10CH S 150 170 250 150 170 250 150 170 250 150 170 250 C V34 WU25CH P V34 WU25CH 3 U 140 160 240 140 160 240 140 160 240 140 160 240 C V34 WU40PH P V34 WU40PH I 140 160 220 140 160 220 140 160 220 140 160 220 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 V35 Indexable Drills