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Bearing Lubrication
Bearing Lubrication
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Old 30th May 2013, 11:24 PM   #1
SuperTuck is offline SuperTuck  New Zealand
diyAudio Member
Join Date: Jan 2013
Default Bearing Lubrication

With an inverted TT bearing, how is the lubrication maintained.

With a standard bearing sitting in a pot of oil and a screw cut up the shaft or sleeve, its obvious how the shaft can maintain lubrication.
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Old 31st May 2013, 04:16 AM   #2
w_oswald is offline w_oswald  Canada
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Join Date: Jan 2010
Location: Manitoba
Good question - I've wondered about that myself. Unless someone has experience otherwise, I'd be inclined to try using an appropriate grease. That generally is quite resistant to flowing under the force of gravity, and it is - after all - a relatively low-speed application.
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Old 31st May 2013, 08:00 AM   #3
Straight Tracker is offline Straight Tracker  United States
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Join Date: Nov 2010
Location: Prescott, Arizona
Default Hello All

Not knowing any better, this is how I would do it.


Attached Files
File Type: pdf INVERTED BEARING.pdf (11.6 KB, 69 views)
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Old 31st May 2013, 08:51 AM   #4
SuperTuck is offline SuperTuck  New Zealand
diyAudio Member
Join Date: Jan 2013
Thanks Straight tracker,
Yes thats what I would have done, had I had a simple bearing.
Unfortunately I need a large structure so I can fit a magnetic bearing at the bottom, at least 4inch below the platter top.
I will probaby use a 19mm shaft (because its quite long, will be more stable) with two 19x19mm bronze bushes, so only have a point of contact at the top and bottom. I dont know how efficiant felt washers are at keeping oil present in the bearing, they were used alot back in the 50-60's.
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