Most specialty steel manufacturers will make available machining information if it is not a common steel variant. Material (high-speed steel, carbide, etc.).Multiple factors affect the spindle speed (RPM) when milling steel, these include: Number of Teeth = The number of edges, facets, or flutes. Speed (RPM) = (Surface Feet per Minute x 3.82) / Diameter of the Toolįeed Rate = RPM x Chip Load x Number of TeethĬhip Load = The amount of material removed, per revolution per cutting edge If this calculator does not give you the results you need for your specific application, our application specialists can help you calculate speed and feed rates correctly. It allows you to accurately determine surface feet per minute, inches per minute, or revolutions per minute. Kennametal’s speeds and feeds calculator streamlines the calculation of rates using either the metric or English system of weights and measures. Improper speeds and feeds often cause low production, poor quality, and damage to the cutting tool. Speeds and feeds are one of the most important elements for achieving the best results for drilling, holemaking, and milling operations.
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