I want to build a steel roller using 4140. Length of steel roller is 48" Roller supported in pillow block on each end with cast iron bushing. I want to roll a maximum weight of 176,000 lbs / 80 metric tons including my 20% factor over the roller. What diameter of solid round bar should I use? What wall thickness of cast iron should I use to make the bushing? What width should the bushing be? Please help me with any of the 3 questions or all of them. Best Regards Robin Beasse |