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Indexable Drills Application Data • Top Cut 4 ™ „  Top Cut 4 • Stainless Steel • 2 x D/3 x D • Speed Chart • Metric Recommended Cutting Speed by Diameter (m/min) Top Cut 4 Material Group Condition S 1 U I S M 2 U I S 3 U I Pocket Seat Geometry Grade P V36 WU40PH C V36 WU40PH P V36 WU40PH C V36 WU40PH P V36 WU40PH C V36 WU40PH P V36 WU40PH C V36 WU40PH P V36 WU40PH C V36 WU40PH P V36 WU40PH C V36 WU40PH P V36 WU40PH C V36 WU40PH P V36 WU40PH C V36 WU40PH P V36 WU40PH C V36 WU40PH Insert Size A Insert Size B Insert Size C Insert Size D TCF040203AC TCF040204AP 12,00–13,99mm TCF060203BC TCF050204BP 14,00–18,99mm TCF070304CC TCF070306CP 19,00–23,99mm TCF090305DC TCF080308DP 24,00–29,99mm min Start max min Start max min Start max min Start max 120 140 160 140 160 230 150 170 240 150 170 240 110 120 140 130 150 210 130 160 210 130 160 210 90 100 120 130 150 200 130 160 200 130 160 200 120 140 160 140 160 200 150 170 210 150 170 210 110 120 140 130 150 180 130 160 200 130 160 200 90 100 120 120 140 170 130 150 180 130 150 180 110 120 140 130 150 180 140 160 200 140 160 200 90 110 120 120 130 160 130 140 180 130 140 180 80 100 110 100 120 150 110 130 160 110 130 160 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%. widia.com V29 Indexable Condition: S = stable conditions, U = unstable cutting conditions, I = interrupted cutting conditions Pocket Seat: P = periphery insert, C = centre insert