Hi, So I have a uni project and were required to design a jockey wheel and corresponding power screw. Were given a maximum load and have to do the relevant calculations, moment of torque, bearing stress etc. My question is I don't understand how to take the given maximum load and find the relevant screw diameter and dimensions, the screw we have to use must be a Metric Trapezoidal thread ISO 2904. Any help would be much appreciated.