735 Cutting speed SFM 1476 2461 2953 m/min 450 750 900 ∅ (in) ∅ (mm) Rotational speed (rpm) 1/4" 6 24,000 40,000 48,000 5/16" 8 18,000 30,000 36,000 3/8" 9.6 14,000 24,000 30,000 1/2" 12 12,000 20,000 24,000 5/8" 16 9,000 17,000 18,000 Material groups Application Cutting speed SFPM m/min Steel cast steel Non-hardened, non-heat treated steels up to 1200 N/mm2 (< 38 HRC) Construction steels, carbon steels, tool steels, non-alloyed steels, case-hardened steels, cast steels Coarse machining = high stock removal with impact load 1476-2953 450-900 Hardened, heat treated steels exceeding 1200 N/mm2 (> 38 HRC) tool steels, tempered steels, alloyed steels, cast steels CUT SPECIFICATION STEEL CUT 11 Index 10 9 OIL 8 7 6 5 4 3 2 1
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