Solid Carbide Drills Application Data • TOP DRILL G™ • Non-Ferrous Materials „TOP DRILL G • TDG532/TDG533/TDG534 • WN10HD™ • Through Coolant • Metric Cutting Speed — vc Recommended Feed Rate (f) by Diameter Range — m/min Material Tool Diameter Group min – min (mm) 3,0 4,0 6,0 8,0 10,0 12,0 16,0 20,0 21 100 – 450 mm/r 0,16–0,25 0,19–0,29 0,23–0,35 0,27–0,42 0,31–0,50 0,36–0,57 0,44–0,69 0,52–0,82 N 22, 23, 24 100 – 300 mm/r 0,15–0,23 0,17–0,28 0,21–0,34 0,25–0,39 0,30–0,46 0,34–0,54 0,42–0,67 0,52–0,82 26 100 – 250 mm/r 0,16–0,28 0,15–0,32 0,19–0,36 0,23–0,40 0,25–0,44 0,28–0,48 0,32–0,56 0,35–0,63 Metric tolerance nominal size range D1 tolerance m7 D tolerance h6 >3–6 0,004/0,016 0,000/-0,008 >6–10 0,006/0,021 0,000/-0,009 >10–18 0,007/0,025 0,000/-0,011 >18–25,4 0,008/0,029 0,000/-0,013 widia.com T139 Solid Carbide Drills