I decided to improve my Delta 9" disk/6" belt sander. It suffers from a lot of vibration which I've put up with for many years. I thought I'd upgrade to a larger/heavier machine but that hasn't happened. So I got the idea to change the belt to a link belt. (Let's not get into a debate on the merits of Link belts here. I like them and they have made big reductions to vibrations on machinery where I've used them.) I pulled the covers off to discover Delta uses a ribbed belt with like pulleys on this unit. I pulled the pulleys off and went to a transmission shop. They matched the sizes and off I went with 2 nicely machined 1/2" V groove pulleys. I go to put them on and behold, they don't want to go on the shafts. I have checked them with a micrometer and they seem to be the exact size of the old pulleys. I oiled the holes and shafts and have filed edges of the shafts to ensure I don't have any burrs. They seem to be fine. I haven't resorted to blasting them with a rubber mallet yet. Is this a common problem? Is there a "trick" to getting snug fitting new pulleys on shafts? Any thoughts to resolve this issue will be appreciated.
Neil