I am in the process of selecting a linear rail system for a 5ft x 10ft cnc laser cutter. Delrin polymer rollers on 2 inch square extruded aluminum tube is an economically attractive solution. I have had success with them on a 3d printer, but I am not sure how well they will handle higher speeds (2m/s) and 12hr per day operation.
The environment is reasonably dust free, but not a clean room. I suspect the erosion of the Delrin over time may cause tolerance issues.
What are some successful implementations of delrin or other plastic rollers in an commercial/industrial setting? Will the plastic rollers typically outlive the bearings?