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bearing type and lubrication for static friction minimization

bearing type and lubrication for static friction minimization

bearing type and lubrication for static friction minimization

(OP)
I am designing a 3 DOF minimal friction mount (like a globe stand) for an approximately 2kg device and am looking for a bearing solution that will provide the lowest possible static friction and dynamic friction at very low rates of speed (~1 rpm).

I was wondering if there is a specific type of bearing known for these properties or whether there is a bearing lubricant that would fit the bill.

Thanks in advance.

- Ben

RE: bearing type and lubrication for static friction minimization

You might want to look at the Kinematic approach.   We had one group that use kinematics for a similar application where we need a very precise motion at around 1 rpm/hr.
I definately would give Bal-Tec a call.

http://precisionballs.com/all_cat105b.php#page1

RE: bearing type and lubrication for static friction minimization

Or for low cost option, an open deep groove ball bearing with a few drops of light oil as lubrication.
All depends on speed, applied load etc etc.

RE: bearing type and lubrication for static friction minimization

(OP)
Thanks, this is helpful.  I decided not to go the air bearing / hydrostatic route since this is a relatively short term low cost project.  I'm also not quite sure how the bernoulli's principle diagrams apply to air bearings.

RE: bearing type and lubrication for static friction minimization

I suspected you didn't really mean "lowest possible static friction and dynamic friction"

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