Getting lower bearing off

there is a belt from the motor to the pad that has apparently broken. Go to dewaltservicenet.com and you can download both the parts breakdown and the operators manual. If I have helped you would you please vote accordingly and thank you

check for a broken belt under the roller. also could be a bearing seizing up, they are known for that

Hi, Sanders are prone to getting lots and lots of dust inside the unit. The cooling fan makes this problem inevitable. The only way to fix this is to take it apart and and blast it with a pressurized air tool. Hopefully this will bring back some life to your sander. The effectiveness of this procedure is dependent on how well you can remove all of the dust. hope this helps.

how to lube sander

You need special pullers for these, you will have to take it to a power tool repair shop.

usually you would need a bearing puller or a bearing splitter to remove bearings, give me the exact brand and model number and I will find a breakdown for the tool and let you know more if needed.

comment changer le bearing du backer plate

First I would go to Dewaltservicenet.com and in the middle of the site towards the bottom type in your model number. I found breakdown on page 8 unless it comes up faster. You will need a bearing puller or something similar because they are pressed on. It is really not that hard with the proper tools. Let me know and if I have answered your question would you please rate this response accordingly and Thank you.

Just solved my problem with Porter Cable 333 orbital sander which just groaned. I thought the worst. I carefully took it apart on the garage floor and immediately suspected it needed lubrication as the motor turned hard. I used my flexible long plastic tube lubrication and put some on the bottom bearing shaft the best I could. I worked it around and around. I began to feel it turning easier. I applied more oil and kept moving and it became completely free. I put a drop on the top bearing even though it was loose. I put it all back together and it works like new. Lesson: do not look for the worst when a tool quits. Suspect the culprit to be lack of lubrication!!!

If it is not orbiting I would look at the bearing in the eccentric under the pad to make sure not seized up or other problem. Also look at the screw holding everything together. Let me know with the exact model number and brand if still a problem and I will dig deeper into this.