Question about Dewalt DW421 5'' orbital sander

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Dewalt sander doesn't spin - Dewalt DW421 5'' orbital sander

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Posted on Jan 02, 2017

seanpwright
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SOURCE: Dewalt DW433 belt sander stop working, why?

Check the brushes for the motor they may have gone bad or broken, I have seen this happen before on dewalt tools.

Posted on Apr 02, 2010

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Dewalt air Palm sander, just bought and tried it a couple times and worked just fine but when I hit the trigger about the 5th time u can just hear air coming through the sander


the vanes in the small air motor are stuck
try a small amount ( couple of drops ) of sewing machine oil in the air inlet and see it it will spin
you may need to bump the pad on the bench to jar the shaft to start rotating

Nov 04, 2015 | Dewalt Tools & Hardware - Others

1 Answer

What is happening to my Dewalt DW421 spinning fast, but no random orbiting motion.


Probably need to replace bearing 6202. I took mine apart, dissambled the retainer and used PB Blaster on the bearing. It seems to be a short term fix. At least it's not operating at hyper speed anymore. Long term, I probably need to replace the bearing and maybe a new lower retainer if I can't press the bearing out.

May 25, 2013 | Dewalt DW421 5'' orbital sander

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Where to apply grease


There are no parts in your sander to grease. The only place there is grease is in the three sealed bearings on the armature and in the platen. Everything should be clean and dry inside the sander to make it less likely for sawdust to stick inside the tool. Blow everything out and replace the bearings if they are not turning freely and smoothly.

Dec 01, 2012 | Dewalt D26441 - Palm Sander, 1/4 Sheet

1 Answer

What type of sandpaper do I use on a dewalt dw421?


this sander appears to use the hook and loop system, you can download an instruction manual by going to dewaltservicenet.com and typing in your model number.

Jan 04, 2012 | Dewalt DW421 5'' orbital sander

1 Answer

When I use the sander, the velco-like thing underneath the paper gets chewed up looking. It's 2 days old, so whats wrong??


When using this kind of sander you have to let the machine do the work, meaning if you press on it things like that happen, if you aren't doing that then possibly too thin and cheap sandpaper attached.

May 17, 2011 | Dewalt DW421 5'' orbital sander

1 Answer

Dewalt d26451 type 1 random orbital sander. why does this sander jump around on the material and feel like it's fighting me all the time instead of sanding smooth and easy?


I have the same problem with a Porter Cable orbital sander I recently purchased. Whats happening is the sander is catching the edge of the board you're trying to sand and jerking back and forth as the sander base spins. It seems that if the board your're sanding is at least as wide as the sander base, the problem goes away, which does little good because there will be many times I we'll need to sand wood that is less in size. But you may try using a lesser grit sandpaper and see if that alleviates the problem somewhat.

Aug 10, 2010 | Dewalt Heavy - Duty 5" Random Orbit Sander...

1 Answer

Dewalt DW433 belt sander stop working, why? While sanding shutters, my sander just stopped. Any fixes?


Check the brushes for the motor they may have gone bad or broken, I have seen this happen before on dewalt tools.

Apr 02, 2010 | Dewalt DW433KT Heavy Duty 8 Amp 3 Inch By...

1 Answer

Break


dewalt has a web sit where they answer your questions

Dec 06, 2008 | Dewalt DW421 5'' orbital sander

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