I never said the shaft was softer, just that it might not be hardened steel (i.e. unsuitable for linear ball bearings), and any metal on metal contact will wear out both parts. It just so happens...
Type: Posts; User: Trakyan
I never said the shaft was softer, just that it might not be hardened steel (i.e. unsuitable for linear ball bearings), and any metal on metal contact will wear out both parts. It just so happens...
Metal sintered and oil impregnated bushings tend to have higher friction than polymer bushings and potentially higher wear on the shaft since these likely aren't hardened. That and their lubricant...
Most machines that use plastic bushings can't be converted to linear ball bearings. The reason for this is that when using plastic bushings, the rods usually aren't hardened and ball bearings will...