Indexable Drills Application Data • Top Cut 4™ Top Cut 4 • Cast Iron • 2 x D/3 x D • Feed Chart • Metric Recommended Feed Rate by Diameter (mm/r) 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 0,14 0,16 0,26 0,16 0,20 0,3 0,18 0,22 0,32 0,20 0,24 0,36 C V34 WU25CH P V34 WU25CH 1 U 0,14 0,16 0,26 0,16 0,20 0,3 0,18 0,22 0,32 0,20 0,24 0,36 C V34 WU40PH P V34 WU40PH I 0,14 0,16 0,26 0,16 0,20 0,3 0,18 0,22 0,32 0,20 0,24 0,36 C V34 WU40PH P V34 WPK10CH S 0,14 0,16 0,26 0,16 0,20 0,3 0,18 0,22 0,32 0,20 0,24 0,36 C V34 WU25CH P V34 WU25CH K 2 U 0,14 0,16 0,26 0,16 0,20 0,3 0,18 0,22 0,32 0,20 0,24 0,36 C V34 WU40PH P V34 WU40PH I 0,14 0,16 0,26 0,16 0,20 0,3 0,18 0,22 0,32 0,20 0,24 0,36 C V34 WU40PH P V34 WPK10CH S 0,14 0,16 0,26 0,16 0,20 0,3 0,18 0,22 0,32 0,20 0,24 0,36 C V34 WU25CH P V34 WU25CH 3 U 0,14 0,16 0,26 0,16 0,20 0,3 0,18 0,22 0,32 0,20 0,24 0,36 C V34 WU40PH P V34 WU40PH I 0,14 0,16 0,26 0,16 0,20 0,3 0,18 0,22 0,32 0,20 0,24 0,36 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 V34 widia.com Indexable Drills