Tom, Felder saws such as the FB540 have flat cast wheels with no shoulders, if the rubber needs replacement you send the wheel out to a company that...
10 year US Air Force in Flight Test, Tactical Warning Attack Assessment, 4 years PM and Sales Exec @ Cray Research, 12 years Sun Microsystems; PM Director of Professional Services and Director of Financial Services Sales, 5 years Cerberus Capital Management doing Operational Due Diligence, 7 years Dell EMC Director Sales operations and Director, Sales Strategy & Planning