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Tractor Talk Discussion Forum

Cultipacker bearing

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Kenneth Whildin

03-15-2008 16:18:11




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I have a 10ft Dunham cultipacker that needs bearings. When I took it apart I was suprised to have octagon shaped WOODEN bearings in there ! ( maybe bushing would be more accurate) Any way does anyone know if these can be purchased or will I have to fab them myself ? This really surprised me as this implement dosent appear to be that old, I thought maybe from the 1960s. Any help will be appreciated, thanks

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greygoat

03-16-2008 09:32:16




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 Re: Cultipacker bearing in reply to Kenneth Whildin, 03-15-2008 16:18:11  
I bought an old wheelbarrow, it needed a new
bearing. When I took it apart i found that it
had a wood one. It had a patent number cast into
the cast iron wheel. I looked it up, and found
that the bearing was hard maple, "boiled in
mutton tallow". I replaced it, however with a
bronze bushing, which i machined and pressed in place. The wheel had a zerk fitting in the hub,
so I drilled a hole in the bushing to line up
when pressed in.I could have grooved the inside
for a grease channel, but didn"t think that a
wheelbarrow needed it.

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msb

03-15-2008 20:56:23




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 Re: Cultipacker bearing in reply to Kenneth Whildin, 03-15-2008 16:18:11  
Rock Hard Maple is what was used in the 30s and 40s. Around here at least. Also used on straw walker cranks in threshing machines and combines.



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Vally Farm

03-15-2008 18:57:20




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 Re: Cultipacker bearing in reply to Kenneth Whildin, 03-15-2008 16:18:11  
On my 8' Brillion I rebuilt the bearing with PVC pipe. Several pieces cut to slid within eachother to get the proper inside and outside diameters. Haven't had any problems with it in over a decade. Did drill holes through the PVC to let the grease get all the way in. Mike



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Larry59

03-15-2008 18:52:52




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 Re: Cultipacker bearing in reply to Kenneth Whildin, 03-15-2008 16:18:11  
Well they say your never to dang old to learn something. LOL did not know about these wooden bearings being used. Interesting



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DiyDave

03-15-2008 16:37:07




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 Re: Cultipacker bearing in reply to Kenneth Whildin, 03-15-2008 16:18:11  
Actually for the use intended these wooden bushings do very well. If you are going to redo them, use black locust or Osage orange. An interesting aside- the U.S. Navy uses a wood (Lignum Vitae, tree of life) from South America as a bearing surface on long prop shafts. Apparently, no other material can match it for its ability to hold oil, not corrode, and its hard surface.



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moonlite 37

03-16-2008 03:58:19




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 Re: Cultipacker bearing in reply to DiyDave, 03-15-2008 16:37:07  
I was a repairman of commercial laundry equipment several years ago and some of the washing machines had wood bearings where the parts would be in water. The water provided the lubrication. I did not replace any of them



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Fordfarmer

03-15-2008 18:38:00




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 Re: Cultipacker bearing in reply to DiyDave, 03-15-2008 16:37:07  
It's not just the Navy- the local hydro-electric plant uses wood bearings for the water turbines.



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dwrk

03-15-2008 16:49:41




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 Re: Cultipacker bearing in reply to DiyDave, 03-15-2008 16:37:07  
Depending where you are, a lot of the wood bearings in this area were made with apple wood. Some with oak but the apple seemed to work a lot better.



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