Today is 11-1-2024, Bought a RT-50D Floor scrubber on 1-27-2022 and it just turned 37.08 hours on it and the motor for the vac system began to make a very loud noise and needs replacement. Along with when the unit is being driven forward or backwards the motor that drives the scrubber oscillates a bit, that started at about 18 hours, that was livable. We called the factory and were out of warranty which we realize, and we were suggested to put a new drive and vac motor in, and they offered no help even knowing that the unit only has 37 hours. Here is my concern, if it only lasted 37 hours and the parts in question are the same that means it will only last another say 30 hours. So, to date with the cost of the machine at 3565.00 which we paid that means the cost of this machine has run us 96.35 per hour to use this machine for the 37 hours and really needs to be replaced because it no longer works. Not sure if that is anything for Sunmax to be proud of. Any machine being used as light as this should last a lot longer that 37.08 hours. The machine when running correctly worked well but looking back we assumed that it would had lasted more than 37 hours. We are now looking at an American Built machine. We have read several other posts stating that the vac motors don't last in these machines. We are sharing to help others realize that even though this machine is inexpensive yet really its not if it only lasts for 37 hours. Regards Chuck, Small company in Manitoweoc WI. read more