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Old 11-08-2011, 02:59 PM   #1 (permalink)
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I want AlMgB14 bearings and rings.

I was doing some reading and came across something interesting. There is a material that is ideal for bearings. It is AlMgB14 (sometimes called BAM) . It has a hardness that is very close to diamond and is slipperier than teflon.

Aluminium magnesium boride - Wikipedia, the free encyclopedia

it looks like a company called Newtech Ceramics has licensed the patent for the material.

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Old 11-09-2011, 12:03 PM   #2 (permalink)
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Have a look also at MICROBLUE RACING
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Old 02-26-2012, 01:34 AM   #3 (permalink)
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dead link?
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Old 02-27-2012, 01:03 AM   #4 (permalink)
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It's hard, but would it withstand the beating it would take as a rod bearing? Many materials are hard but prone to shattering, and thus are no good for this type of application.

Thanks for the link though, very interesting.
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Old 03-23-2012, 04:48 PM   #5 (permalink)
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For harder piston rings you could always go with tool steel rings.
They are pretty hard, I believe you need about a #400 finish on the cylinder bores to break them. Normal bore finish these days is done with #800 grit stones or finer.

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