Motor noisy sounds like bad bearings; can I replace bearings?

Unfortunately those machines do not have serviceable bearings. The entire motor needs replaced. However, I have saved noisy bearings by putting oil on them, specifically 3 in 1 Blue Label motor oil. A few drops spread on the top and bottom of the bearings and giving the motor a few backward and forwards turns by hand will help those bearings immensely.

If the sound is more like a growl or a whine when it winds down after being shut off, that's usually the bearings. The sad thing, in today's market, is that there are frequently problems getting parts for the foreign brand vac's. If I'm not mistaken the Miele brand is made in Germany. If it is, indeed, the bearings of the motor, the most economical way to fix it is to just drop in a new motor. First, the motors are frequently, extremely difficult to remove and replace, if there are replacement bearings available they are likely to be aftermarket bearings. It would be expensive to do even just for bearings, so if you're going to that much expense you should probably consider either a new motor or a new vac.

sounds like an obstruction in the blower motor fan or bad bearings in the blower motor located in the bottom end of the main body

is the vacuum new how old is it, it may be time for a new vacuum or check on how much new motor is to replace it.

Try blowing out the motor housing with commpressed air through the cooling vents as it is running, if that dont quiet it down it may be the bearings are dry and need to be oiled, use 20w 3 in 1 oil in the blue container.

If you have no suction, there are only a couple of things that could cause it. As you have checked for blockage, and changed your filters, you may have a vacuum motor with bad bearings, or broken fan blades (inside/on the vacuum motor). Either symptom points towards a vacuum motor being bad and needing replaced.

Sounds like a bad motor. Could be either foot motor or main motor either way cost will be more than half of the unit.

Sounds like a bad motor bearing. If it is, then you would have to replace it. Could be the brush roll, did you check the ends to make sure they turn easily?

Usually when the motor fan or motor bearings go bad, it will run very loud. You will have to replace the motor. Part #2031214, sells for around $55.

When the motor fan or motor bearings go bad, the motor will run real loud and will have to be replaced. Part #2031214 and sells for around $55.