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Most machine tool builders will display the maximum feedrate available on their machines. It is the maximum rate at which the machine is able to move its axes without damage. It is not necessarily the rate at which you will be able to machine a particular part. Look-ahead capability of the machine control among other factors will limit the speed of movement.
Many people will look at the feedrate capabilities of a machine and will be impressed that the catalog specifications, for example, list 2,000 inches (50 m) per minute feedrate maximum. If you are machining mold steels with face mills or large diameter tooling, or any tool for that matter, there will be very few applications that will allow you to use this feedrate while actually cutting the material. The feedrate for a given tool is determined by many more factors than just the motion of the machine. You must determine the diameter and type of tooling, the machining strategy, spindle RPM required, as well as the type of material and parts geometry to be machined in order to know what realistic maximum, sustainable machine tool parameters your shop requires.
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