or determining the pressure on a guideway, it is necessary to compute cutting, gravitational, and other forces, causing pressure on the guideway. This involves computing the maximum forces on the guideway. This can be done by assuming a maximum cut width/depth and a maximum feed rate, i.e. the metal removal rate. The rate depends upon the power capacity: the kW rating of the motor, powering the machine tool. The following table gives the amount of material (in cc) one kilowatt of power can remove in one second.