|Forum topic by nicksmurf111||posted 06-20-2014 04:26 AM||985 views||1 time favorited||18 replies|
06-20-2014 04:26 AM
So I’m replacing the cutter head bearings in a Belsaw 9103 that I got for a pretty good price. One bearing was noisy and I think it was off balance.
I got the bearing off the chain reduction side off. The shaft slid out with a little encouragement, and the bearing rotated out of the pillow block after a little heat and some encouragement with an air hammer. The part of the bearing beneath the locking collar did shatter, but it all came apart without damaging the cutter head shaft.
The bearing on the motor drive side will not budge. I have the pillow block taken off the machine. I’ve heated it, lubricated it, beat it with a dead blow hammer, and I think that it’s only moved like 1/16”. I can get the locking collar to move back and fourth on the bearing ever so slightly. My three jaw puller isn’t large enough to fit around the pillow block. I’m a little worried that any more beating can potentially break the pillow block. Should I support the pillow block in a hydraulic press and try pushing the cutterhead out (catching it before it hits the floor)? The bearing will not rotate out of the pillow block until the shaft is removed. So putting a bearing splitter or 3 jaw puller on the bearing is out of question.
I can take it to a machine shop, but I think they will gouge me on labor. Last time I took something, they charged me nearly $100 to extract two bolts out of some car spindles.
The bearings are “208” size with a 1 1/2” inside diameter and 80mm outside diameter to fit a pillow block. I decided to pick up some hc208-24 bearings. I really don’t know what HC stands for, and what makes it different than a RA bearing, but it seems like RA’s are out of production. The HC bearing has a eccentric cam locking collar which matches what is on the machine. Surprisingly, one of the bearings I received seems to be bad, so I need to deal with the Ebay seller. He said to grease it up, but that didn’t help. I’ll be posting a YouTube video of that tomorrow.
Thanks ahead of time!