Lincoln Electric has obsoleted the fan motor. This motor was used in many Lincoln power supplies including DC 1500, R3R400, RER500-1, Power Wave 655/R, CE, Power Wave455M, Power Wave M/STT, Power Wave 455M Robotic Integration. 
 
Don't scrap your reliable old Lincoln just because Lincoln can't get you a new fan motor. 
Pays normal ground freight on this item to any domestic U.S. address.