bandit chipper disc bearings

[Lbj]

does this pull out in one piece , or does the ring around the shaft need to be removed first if so does it turn / screw out . thanks for your help

 

[evo]

Is there a set screw?

 

[Lbj]

No set screw

 

[Jehinten]

I have found that if you have a bearing shop near by that it isn't worth the trouble to do this kind of work yourself. I needed to replace a gear box on my bucket truck, the one that rotated the boom, replacement cost of the gear box was $11,000. For $1,000 a local shop pressed it all apart, remachined the shaft and pressed on new bearings.

As for taking this apart I'm afraid I wont be much help. Best of luck if you continue to do the job yourself.

 

[New2trees]

No chipper knowledge but I am a retired car mechanic, who has worked on a lot of different things over the years. My guess would be that the bearing is a tight press onto the shaft, so you are not going to be able to just replace it without removing the whole assembly and having the bearing pressed off and pressed back on. Even if you cut it off or used a torch and puller to remove it, if you tried to install a new bearing with a hammer you would damage the opposite bearing. It also looks like the inner race which goes around the shaft used to have two set screws that may have been left out as it appears that the bearing was not pressed far enough onto the shaft to allow them to properly contact the shaft. Are there slots in the housing on both sides of the assembly that would allow you to remove the whole assembly, (chipper disc shaft/bearings) and take it to a shop? If so the charge to press a bearing on and off is usually 50 tops.

 

[Trevor Balgavy]

That bearing isn't press fit to the shaft but they can act like it after being together for all of those years. The new bearing comes with the housing and everything so don't worry about cutting the housing and race to get it off. Just be careful to stay out of the shaft while you're cutting.

 

[Trevor Balgavy]

That is what your new bearing will look like, that ring around your shaft is just the inner race.

 

[Lbj]

That is what your new bearing will look like, that ring around your shaft is just the inner race.

Thanks for the info , did pull the whole disc and both bearings are bad

 

[Trevor Balgavy]

Just make sure when you put it all back together, you tighten the non drive side down first with that big bolt and washer that goes in the end of the shaft. If you don't and do that side last, there's a good chance you'll side load the driven side bearing and that will cause it to fail prematurely.

 

[Lbj]

OkAy , thanks

 

[craneguy1]

Always just do the pair imo. Trevor to the rescue!!! Again!

 

[Lbj]

Thanks for all the replies, the manual recommend ep-2 grease , any one recommend a brand

 

[Tom Dunlap]

Ahhh...the memories of head bearings! NOt bad memories. Doing my own mechanic work gave me great satisfaction. Along the wya I learned a lot too.

@Lbj How did you remove the bearings? Gas ax? Puller? Whacking with a BFH?

On my chuck and duck the off-side bearing spun and galled itself to the shaft. After degreasing as much as possible I torched the bearing apart. When I got to the inner race I carefully sliced it into three pieces. I made sure that the cutting didn't go through the race. Then I used a big cold chisel with a rubber hose handle and smacked the race in the notches until it broke apart. It didn't take much since the inner race was warmed up anyway. The shaft wasn't too trashed from the spin. My torch work didn't do any damage

 

[Lbj]

had a friend help me since he has a nice shop and tools . he mostly used the torch and then cut the inner race so far with a cutting wheel then a cold chisel

 

[New2trees]

Chuck and Duck.....never heard that not being an arborist but I love the nickname

 

[erwin]

still dreading the same job on my much bigger bandit, the 250. has to do it before this spring.