Kubota B21 axle bearings

[Cowboy Billy]

I've never seen a bearing broke like this before! This has been keeping me busy for the last few days. I really don't like rebuilding stuff like this but at least I can when I have to.

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Its been leaking for a few years and I thought it was a hyd line to the outriggers. Until my friend Scott grabbed and wiggled the tire when I had it jacked up digging a trench.

I don't know how it got broke but I have a feeling its one of two things. One when I first started working on our place I was putting in ditches buried to the axles in mud and could only move by pushing with the back hoe and curling the bucket and when I was trenching I could not get to solid material with the out riggers so a lot of the weight of digging went on the axle. Or two and most likely my Uncle had it and was square baling hay and dropping the bales in the field rather than hooking up a hay wagon. And having his 14 yr old son pick them up one at a time and take them to the barn. And he was doing it full speed hitting dead furrows jumping them with the tractor bouncing in the air. I wish I had been there and seen it their ears would still be ringing!

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It sure was a pain taking this thing apart. Had to pull off the whole loader backhoe subframe. 37 1/2" to 5/8" bolts (I don't know what the actual metric size is) on each side. Plus a bunch of smaller stuff. Then as I was pulling it apart I found I had no where to put jack stands that would not hurt anything else. So I ended up having to suspend the thing from hoists overhead.

I hope I can find somewhere else to get the bearings and seals from other than the kubota dealer. I ordered a service manual a week ago and told them I would pay shipping to get it as soon asap. And they said I may get it friday. Who knows how long bearings and seals will take! I have work I have to get done and I need it back together.

When its up and running its a great little machine.

Billy

 

[Singed Eyebrows]

Years ago I could have just said to put in SKF bearings & these would have been great bearings. Now some SKF's are China bearings. If you want really great bearings for this you will probably need to buy some NOS(new old stock) ones off Ebay. New Departure(NDH), SKF, Fafnir were great bearings. Good luck, that is a nice tractor, Randy

 

[burntime]

Wow, I agree, I have not seen em brake like that!

 

[PJF1313]

Billy -

How old is that Kubota?

I agree w/ "burntime", I've never seen bearings go like that. How scored are the races? What's left of the oil seals?!?!

Be happy that you have a place to tear that down, out of the weather, like you have. I'd hate to see something like that done outdoors!

EDIT - At work, we're doing a clutch/P.plate/T.O.B. on a 89 Ford/New Holland 2630. This tractor lived its live out doors, about 20 FEET from salt water, since new. It has just about 3500 hours on the dial. I don't think the cab'll go back on... more rust than cab! We have it just about split this afternoon. The plan is - tomorrow, split it, throw the clutch in, and get it aligned with a couple of bolts before quitting time. Sunday - put the halves back together and moving under its own power. I can't imagine doing that without a chain hoist, a couple of jacks, and a handfull of jack-stands.

I don't envy you doing those bearings on yours, especially w/ the hoe attachment

 

[heat seeker]

Years ago I could have just said to put in SKF bearings & these would have been great bearings. Now some SKF's are China bearings. If you want really great bearings for this you will probably need to buy some NOS(new old stock) ones off Ebay. New Departure(NDH), SKF, Fafnir were great bearings. Good luck, that is a nice tractor, Randy

I agree - get the numbers off the bearing, if you can. They are pretty standard worldwide. NOS is the way to go, IMO.

And I wouldn't lend my tractor to anyone, not even an uncle - for this very reason. If I don't go along to operate it, it doesn't go.