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Re: VEX Pro vs. AM Bearings
I'm sure Paul and his staff at VEXPro will get to the bottom of this.
Just because I am addicted to looking at details, I took a two VEXPro FR8ZZ Hex bearings (217-2734) to my lab and set up an indicator to measure run-out while the bearings were supported by a hex shaft clamped in a bench vise. They measured 0.0005" TIR on the outer race and 0.0015" TIR on the inner flange face. I have some AndyMark FR8ZZ Hex bearings (am-0279) on order and will test a couple of them the same way when they arrive.
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Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
 since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)
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