A self-propelled rotary cutting tool (SPRT) can be used in metal machining at higher cutting speeds with much longer tool life than conventional cutting tools because of the continuous rotation of its round tool insert driven by cutting force. The paper presents a theoretical calculation of cutting speed and feed rate for the SPRT together with practical concerns. Based on the research results and industrial experience the principles for choosing depth of cut in turning and face milling and general considerations concerning the application of the tools are detailed.
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