[Jon Stratis]

R08:

ROBOT parts shall not be made from hazardous materials, be unsafe, cause an unsafe condition, or interfere with the operation of other ROBOTS.

Emphasis mine.

When looking at runs of chains, inspectors look at the possibility of injury more than anything else - there's no easier way to lose a finger than having a chain yank it through a sprocket. As far as that is concerned, speed isn't really much of a question. A slow moving chain and sprocket can cause damage just like a fast moving one. If at all possible, add a cover to it to make it safe!