10 CONTACT INFORMATION For more information please call +1 330 928 7744 or send an email to ataorders@atatools.com KEY CONVERSION FORMULAS FOR METRIC AND IMPERIAL UNITS Inch RPM (n) = SFM (vc) x 3.82/Tool Diam. IPM (vf) = RPM (n) x IPR (f) Conversion Inch to Metric SFM (vc) to m/min (vc) = SFM (vc) x .3048 IPM (vf) to mm/min (vf) = IPM (vf) x 25.4 Metric RPM (n) = m/min (vc) x 318.057/Tool Diam. mm/min (vf) = RPM (n) x mm/Revolution (f). Conversion Metric to Inch m/min (vc) to SFM (vc) = (m/min)/.3048 mm/min (vf) to IPM (vf) = (mm/min)/25.4 1 inch = 25.4 millimeters 1 millimeter = (1/25.4) inches or 0.03937 inches Converting inches to millimeters d(mm) = d(inch) × 25.4 Converting millimeters to inches d(inch) = d(mm) / 25.4
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