These totally enclosed fan cooled (TEFC) motors produce extra high breakdown torques for maximum cutting power. Motors are mounted using a special bracket, so that the motor pivots on rod for belt tensioning. Motor’s shafts are 1-3/4 inches long, ¾ inch diameter with a keyway. Motors include a 54-inch cord. Catalog numbers 120925 and 120997 replace Delta UNISAW® motor 83-621 (1.5HP); 120728 and 120998 replace Delta UNISAW® motor 83-651 (3HP)