General Category > General Discussion
Bearings
admalin:
Hi
I found an intersting website --- lignum-vitae.com. There's a picture of an unusual form of bearing, presumably made by someone without a lathe.
English hardwood is not as dense as lignum(sinks in water), and it occurs to me you might benefit slightly from having the grain in line with the rotation.
From what you've said I guess the shaft is no more than about 6" dia and probably runs relatively slowly, in which case whatever hardwood you use won't make much difference. Is it for a thresher?
Tony Malin
BrianH:
--- Quote from: Roger Groom on November 20, 2011, 08:07:05 PM ---Hi Barry
What about Apple? It was used in mill gearwork.
Roger G
--- End quote ---
I did a mag article on a Dutch wind-powered sawmill, some years ago, and Roger is indeed correct in saying that apple was used to make the teeth for one side of the massive gear train but, if memory serves, it wasn't because of its quality as a bearing but as a safety feature. The opposite set of teeth would be made of (I think) hickory so that should the mill's workings go suddenly pear shaped the apple teeth would strip away, protecting the rest of the machinery.
How's that for a bit of woody trivia??
All the best
Brian
Andy Coates:
apples and pears! Make your mind up Brian!
BrianH:
Sorry Andy,I feel such a lemon, I forgot that members getting fruity on the forum gets on your pip. :o
Or perhaps its just sour grapes?????????????
Brian
BarryMobbs:
Thanks for your comments everyone.
I think that I will use the elm that I have as this machine is not going to do a lot of work.
I have tried to get some lignum vitae bowling woods in the past but have not been able to find any as they are now made from plastic. I think my chances of finding 16 would be very remote.
I will post some pictures when done.
Barry
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version