Supermax 25x2

Hello all I recently aquried a supermax 25×2 and noticed in two post here their are members with the same sander and wanted to ask a question. When I got back home I disected the plug and it was wired 2 hots and a ground so
I changed the plug to match my receptacle and wired the same way. I have noticed the 5 HP lesson motor does get hot after about 30 minutes of continuous use you can lay your hand on it and remove it about 2 secs later with no burns or red marks to my hand. Do the motors typically run this hot? I have been running my machine for an hour at a time then rest it.