5/8 keyed shaft trouble

[Mr. Ivey]

They were made like that for a reason. Look at the shaft from last year, and look at this year's shaft. This year's shaft is a lot nicer, it's set like a gear shaft in a car or something to that extent. The reason it's so hard to get a bearing on there is because they need to be pressed on there by a bearing press, and pulled off by a bearing puller. You can get the puller at a NAPA or another auto shop. To press them, get a piece of soft wood and a big hammer. Find a work bench with a hole drilled in it that's bigger than the shaft, but smaller than the bearing, or something of the liking. Tap the shaft into the bearing using a rubber hammer until it's just fitted inside of the bearing. Then center the shaft and the bearing over the hole in the bench. Place the soft wood over the other end of the shaft (the one that's pointing up), then slowly drive the shaft through the bearing to a spot that you have marked. Be sure to hit the piece of wood exactly where the shaft is on the other side. Go very slow and be very exact. This is what I have done to get the bearings on, to get them off, I just get my puller out of my mechanics tools at home.
Hope that helps.
ivey

[magnetnerd]

Our shaft seems to be a little bit on the small side...the bearings, gears, etc. slide on and off with ease. Last year our shaft was aluminum and we had steel gears, this year we're using steel shaft and steel gears. Any ideas on how to keep the bearings where they are?

[Dick Linn]

Originally Posted by magnetnerd

.... Any ideas on how to keep the bearings where they are?

We use shaft collars, which are readily available from MSC. Price is typically in the $1.50 - $4. range.

[Ali Ahmed]

If you have accsess to a lathe, put the shaft in there and take some fine sandpaper to it. We find that this works really well and it is better then having someone just sit there and sand becuase this will keep it nice and circular.