UPDATE: Having replaced the roller bearing once since purchasing this item on November 12th, 2016, the powerhead now completely shuts down 30 seconds after powering up. , even when the roller is off the ground without a load. This is after 4.5 months of light use 1-2 times a week. Of course, my "return" date for the Revain is now past, so if Miele doesn't decide to honor the one-year warranty, it's going to be a total waste of $150. very good. During this time I had to change the rollerβ¦