Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: What's the running rpm for this machine?
Document: I usually don't consider ratings that are in the one star category. this purchase will make me more mindful of them.After turning it on for the first time, the machine jumped around on the bench like a Mexican jumping bean. I then  bolted it down to a stand in an attempt to tame it. Within twenty minutes of use the abrasive wheel on the right started fragmenting and had to be removed and thrown out. The switch requires multiple attempts of  pressing to turn it on. Turning off is easier.
I mounted a Hitachi 729306 brush (purchased on Amazon) and it works well. Although advertised to fit  1/2 to 2&#34; arbors, I had to enlarge the hole in the plastic center pieces to fit on the odd 1-1/4&#34; bushed flange on this machine. i also had to make a large spacer/washer to position the wheel and allow the flanges to grip it properly (I cut one from a piece of plastic).
i have had many cheap to good (delta) bench grinders. worth the extra money for the supper smooth action in this grinder
What a waste. So many other tools I ordered were dirty, damaged, improperly packed etc. Their customer service is so lacking too.Update: got 3rd one today, also garbage, will just return for refund.
Well built, no vibration. Does not accept wire wheel and there is zero support from Metabo USA.For a proffesional unit pay more and get a well known US made unit
Very nice tool well made I wool buy it again German made  I think I was looking for something like this
This seems to be a high quality wire brush compared to others i've had in the past.This grinder is expensive compared to the other bench grinders offered here, but so far i think it is well worth it.
This is the one I should have bought in the first place! After a DeWalt and 2 Jet bench grinders and tons of frustration, and about 5 weeks after ordering the first one, I got a great tool. It has plenty of power, more than adequate tool rests and is another quality product from Metabo. Plus, the wheels had no wobble. The only thing I can find wrong with it is that I had to have some spacers made for the wire wheel.
This is the first bench grinder i have owned, but i have used several throughout the years. This grinder is quiet in comparison...no need to bolt this down...and the stones are true. Easy enough to take apart and change wheels. Fantastic
This is one Quality Bench grinder , quiet .very well balanced ,no vibrationwhat so ever , it replaceses my craftsman . looked all around for a high end grinder and after reading all of the reviews on this one I am sold and purchased it ,very pleased with mine should have bought it along time ago .You will NOT be disappointed with the METABO it is Quality made well worth the investment and it should last for years . Thanks :)
Answer: no