Nope, but it's interesting you would say that. After hiring a pro to grind sharpen the same chain three or four times, I've found that the chain teeth are history after the 4th. Getting 12 to 14 sharpenings per chain is a blessing for me. At $6 apiece, that's at least $80 savings per chain.
Can you clarify your question? What's the general rule for maximum chain sharpenings using a rotary grinder? Everyone I have talked to says that the high-speed rotary gets you a bunch more than a disk and is about the same as a gentle file.