|Forum topic by bolgre11||posted 04-07-2015 08:01 PM||815 views||0 times favorited||9 replies|
04-07-2015 08:01 PM
Hello everyone! first-time poster, but a long-time lurker here.
I’m in the process of restoring a Delta/Rockwell 20in Bandsaw, model 28-363 to be exact, and i’m having some interesting problems with the bearings on the lower shaft. Seeing as how i’ve seen a couple awesome restorations of essentially an identical saw to this one on this website, I thought there might be someone on here who could help.
I’m doing the project for a friend, and when he traveled to purchase the saw he noticed there was a pretty significant wobble in the lower wheel. The man he bought the saw from hadn’t used it much/didn’t know a whole lot about it, so my friend was able to haggle on the price more because of this issue.
When I was given the project, I was simply told there was a wobble, and that the bearings would need to be replaced. I had planned on doing this anyways, and didn’t think much about it.
However, when I pulled the lower drive-shaft housing apart, to my surprise I was met with a nearly brand-new set of bearings. They weren’t even dirty. However, the bearing on the wheel-side of the shaft seemed to be horribly over-sized internally, causing the wobble.
Upon closer inspection of the shaft, I noticed that the part of the shaft where the bearing sets is actually a smaller diameter than the threaded part in front of it which is designed to hold the lock-nut in place.
When the new bearings were pressed on, whoever did it used a bearing that would fit over the threaded part, but gave no effort to eliminate play on the part where it seats up with the shoulder on the shaft.
The part of the shaft in question almost looks like it was original to the design, and wasn’t turned down or worn-in.
Has anyone ever seen a shaft like this, or knows of a good way to fill in the gap to make the “new” bearing fit with no play?
Any forum research i’ve done has turned up nothing, and the exploded parts view in the owner’s manual i was able to find isn’t very forthcoming.
Attached are some pictures of the shaft to help with the issue.
Thanks for looking!