Replacing disc bearings on chipper.

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I got it. Thanks for making me feel stupider!
Jeff :)

Well, I am good at the impossible.

But 800 hours and the disc bearings went don't sound like to bad of a deal though. I dunno, I would like to think they would last longer. Its all this cheap recycled steel from China. What kind of grease was being used?
 
Cant do this ####e myself, no siree. Gonna take it to the dealer which unfortunately three hours away hauling my chipper up 95. What perplexes me is that I've meticulously maintained it and the machine only has 800+ hours on it. I've cleaned/greased the bearings fittings every day, kept the knives sharp, and the anvil properly adjusted. I don't feed roots and garbage into my machine so does anyone have any insight as to what I may be doing wrong to cause this premature failure.

Oh, and it's a 2006 bandit 200.

Why cant you do it ?
 
I don't understand what the cutter wheel bearings have to do with the infeed wheels ? The bearing for the cutter wheel are simple enough to change but you need something to lift and remove the disc , as far as the ominous sounds what chipper new or old doesn't have a little noise in those bearing , the best way to test them is to use a 3/8 extension and touch the bearing casing while the machine is running engaged listen to the other end and you can hear the bearing inside , works with engines and pulleys bearings as well ..Overgreasing will destroy them as well..
 
i overgreased my stump cutter wheel bearings and blew out the seals. that allowed water to get in and then they even started locking up after hosing it down and letting it sit for a few days. i don't wash them with a hose much anymore. i use a blower now. now i just grease them every time i use it because of the seals but i'm gonna have to replace them soon as they are talking to me.
 
yeah, I knew it was going because for a while it was making a rhythmic sound when i shut it down. nothing really bad, for about six months. yesterday that sound turned into something a wee bit more ominous at the drop of a hat. dealer said any sound in an unsafe chipper.

I had the same thing happen with my bandit 100 last winter. I got under the shaft with a large pry bar and was able to see some movement so I knew the bearing was shot. The chipper has thousands of hours on it so I wasn't surprised. It really wasn't a big deal to change. I struggled a bit getting the bearing off then just cut it off with a cutoff wheel. Come to find out a previous owner must have mushroomed the shaft with a sledge hammer. I didn't have to make a big contraption to lift or hold the wheel I just shimmed up the shaft. After filing and mic'ing the shaft the new bearing went on with ease.

Recently I was looking at another chipper to buy with 1200 hours. Another potential buyer had highered a service rep to look over the machine. I got a chance to talk with him and he recommended changing the bearings at those hours. I was surprise because they looked good to me without slope or noise.

At my engineering job I am always sizing and spec'ing out bearings. Everything I design the bearings have to have a L10 life of 50,000 hours
 
how the hell did you lift the disc with bearings outta the bearing blocks to shim it? on a 90xp you have to pull the pump pulley wheel to get to the bearing......your not shimming on the bandit 90xp!

not sure what model your working on???


LXT..................
 
A bandit 100, hmmm...doesnt that have the pulley(s) for the hydraulic system on the belt side? Im just wondering how you did it by shimming the disc shaft.....cuz any way easier than what I did..I wanna know!!!



LXT............
 
A bandit 100, hmmm...doesnt that have the pulley(s) for the hydraulic system on the belt side? Im just wondering how you did it by shimming the disc shaft.....cuz any way easier than what I did..I wanna know!!!



LXT............

Yes I had to remove the PTO and hydro pump pulleys, I shimmed it up on the disc side of the bearing.
 
wow the 100 is different from the 90xp, I would have to remove my gas tank...where yours is a lower profile, the other side is so close to the rear of the infeed chute that you would struggle to get the bearing off, for me it was much easier to just lift the whole disc with bearings out, easier to work with & really wasnt much of a problem.

your set up is different though & hey! whatever is easier!! good pic posting & helpful!


LXT..............
 
Did you have to cut the bearing apart because it was so tight?
or just the housing to get a puller on?

I had to cut thru into the ID of the bearing because the shaft was mushroomed. Although I didn't know it was mushroomed until I got the bearing off. I'm not shy of cutting off bearings, sometimes its way faster when they have a tight fit that will take thousands of pounds force to get off. I cut most of the way thru then crack it with a chisel.
 

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