I can't speak so much for robot chains but I can tell you that you should absolutely never lubricate a bike chain with WD-40. It will strip any existing lubricant from the chain and leave you with metal-on-metal. Not to mention that it will leave behind a paraffin residue that will muck up with dust and dirt faster than any other product. The only time you can use WD-40 on a chain is if you're trying to clean rust off it, after which you should de-grease and clean it and then properly lubricate it.
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Originally Posted by Ether
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Not sure where you got that picture, but even WD-40 themselves say that its not meant for bike chains.
http://www.wd40.com/about-us/myths-legends-fun-facts/