Question about Black & Decker 3 x 21 In. Dragster Belt Sander

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B&D Dragster Sander. I used it about 3 times and the front roller has come off. Do I have to buy the entire carrier assembly?

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Posted on Jan 02, 2017

  • 302 Answers

SOURCE: Black & Decker 3X21

I have one of those and I just smack the front roller ahead with a brass or plastic hammer. I hit the movable bracket that the roller is attached to. It takes a pretty stout whack to do it though. hope this helps you

Posted on Jan 14, 2010

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1 Answer

The big roller at the back that spins has unscrewed and i cant seem to tighten it back on. is there a trick to this?.


generally you would use a strap wrench to hold the roller and then something to hold the gear to reseat the rear roller.

Sep 13, 2011 | Black & Decker 3 x 21 In. Dragster Belt...

1 Answer

My belt broke while sanding. part of it is tightly jammmed behind the roller, How do I get to it???


UNPLUG TOOL and then what you will have to do and this will take some time is using a good pair of pliers start pulling the belt out a little at a time and you might have to cut some on occastion but this will work, I have done it many times

Sep 25, 2010 | Black & Decker 3 x 21 In. Dragster Belt...

1 Answer

Black & Decker DS321 - ripped the rubber off the drive roller. Now got it in pieces, all cleaned up, but I dont see how to remove the driver roller from the Drive Shaft and belt guide assembley.


looked at a schematic and the drive roller screws onto the drive shaft, I don't see where is a locknut on the outside but the shaft is threaded, it moght be left hand thread. If there are 2 holes in the gear see if you can find a spanner wrench from a grinder and secure the roller and loosen the gear.

Sep 12, 2010 | Black & Decker 3 x 21 In. Dragster Belt...

1 Answer

Sandpaper does not stay in place


re align the end rollers as one of them will be out

Mar 22, 2010 | Black & Decker 3 x 21 In. Dragster Belt...

1 Answer

Black & Decker 3X21'' belt sander (#7447)- pushed front roller in to put on new belt, can't get it to spring back out. Jim in Flippin


I have one of those and I just smack the front roller ahead with a brass or plastic hammer. I hit the movable bracket that the roller is attached to. It takes a pretty stout whack to do it though. hope this helps you

Jan 14, 2010 | Black & Decker 3 x 21 In. Dragster Belt...

1 Answer

My DS321 belt sander had the large drive roller(and belt)came off on the first extended use. Looking at an IPB no thrust washers were found either.


I would recommend going to Dewaltservicenet.com and typing in your model number and on the next page find the type number for the tool. I took a guess and found 2 thrust washers for the DS321. Let me know if you need more assistance and I will try and help

Jul 20, 2009 | Black & Decker 3 x 21 In. Dragster Belt...

1 Answer

Craftsman 3x21 plastic front roller needs replacing


Do you know anyone with a metal lathe or that works in a machine shop? If you do ask them if they can make the rollers for you out of metal. Or else find a machine shop and ask them to make you new rollers.

Apr 01, 2009 | Tools & Hardware - Others

2 Answers

Belt won't stay on belt sander


Check first that you have retensioned the belt... i.e. when you removed the other belt, you would have had to pull on a spring-loaded lever to remove the belt tension before you added the new one... make sure the tension lever is flipped back in to ensure the new belt is tensioned...

Next, and the likely problem you are having, is belt tracking... There should be an adjustment knob up near the front of the sander near the front roller, either on top of the front part of the sander, or to the side near the front roller... When you turn this knob, it makes the belt track either left or right over the sander's base. This knob will allow your belt to run square and true and not spin off to one side...You need to adjust the tracking using this knob while the belt sander is running and with the new belt tensioned and in place, so turn the sander upside down, and power it on with one hand, then turn the knob with the other hand whichever way is needed to have the belt track square and in the middle of the rollers. Make small adjustments on the tracking knob to begin with. They can be sensitive at times.

That should stop your belt spinning off to one side.

Mar 18, 2009 | Black & Decker Tools & Hardware - Others

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