[Steam-engine] wood bearings

[EJHottel at aol.com]

Hydraulic (water) turbines frequently used wood (lignum vitae/iron wood) as  
the bottom bearing. It was also used on ship propeller shafts. It is now  hard 
to get (endangered species) and is frequently replaced with  Micarta.
 
Jack Hottel
Peerless 50
 
In a message dated 10/15/2005 9:59:53 AM Eastern Standard Time,  
HISTMACHRY at aol.com writes:

Do any  of you know of machinery, lineshafts, countershafts, where wood is 
used as  the bearing? Or as a variation on a theme, where babbitt is poured  
directly on the wood. I'm looking for info, examples, photos of such  bearing 
arragements primarily in the metal and wood working fields,  particularly on 
custom 
made machines. As an example there is a cut off saw  at the Agrirama's 
sawmill in 
Tifton GA, the bearings on this swing saw  look as if the steel pulley shaft 
runs on wood. No one at the site could  tell me. 


Robert  Yuill
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