hello all i am calling upon the gods of the garage for assistance

i was just outside doing a little cutting on the old gal with a dewalt angle grinder when something strange happened......up to this point in its short life (1 year) its had a pretty easy life cutting holes in sheet metal for patch panels and the like
today i went and put a fresh disc on this tool and proceeded until all of a suden the magic smoke presented itself and the spinning parts stopped spinning

can anyone reccomend a good heavy duty grinder???