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

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Installing belt on a 7447 belt sander

How to take one off and put another one on

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Posted on Jan 02, 2017

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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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SOURCE: How do I change the

To change the belt, you must release tension of the rollers by pushing the front roller straight back until you hear it click and lock in position to change paper. Remove old paper and replace with new paper. Make sure if new paper has directional arrows to install properly.
Now you must release the front roller to put tension on paper. To do this push the front roller from the side that has the adjustment screw. This will release the front roller and allow it to go back into position. Be careful as it pops back quickly and with some force.
Turn on sander and adjust centering of paper with adjustment screw found near the front and side of sander.

Posted on Jul 08, 2011

  • 1 Answer

SOURCE: How do you replace he belt on a 7447 Sander

To change belt:
1) Put front roller on floor and push down until roller locks back.
2) Put on new sand paper.
3) Loosen tracking screw until front roller is released.
4) With sander running, use tracking screw to center belt.

Posted on Jul 23, 2011

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2 Answers

I have a Black & Decker sander, model # 7447 and am having problems changing the sand paper.


The 7447 does not have a release lever. To change the belt, you must release tension of the rollers by pushing the front roller straight back until you hear it click and lock in position to change paper. Remove old paper and replace with new paper. Make sure if new paper has directional arrows to install properly.
Now you must release the front roller to put tension on paper. To do this push the front roller from the side that has the adjustment screw. This will release the front roller and allow it to go back into position. Be careful as it pops back quickly and with some force.
Turn on sander and adjust centering of paper with adjustment screw found near the front and side of sander.

Jun 13, 2011 | Black & Decker Garden

1 Answer

I have borrowed a ryobi industrial belt sander, I have put the sanding belt and repositioned the latch. When running the sanding belt keeps moving out.


There will be a tracking adjustment somewhere, usually a knob or wheel located at one end (axle) of the sander that allows you to adjust that... run the sander at low speed while you turn it until it tracks straight

Jun 10, 2011 | Tools & Hardware - Others

1 Answer

CHANGE THE SANDPAPER IN THE BELT SANDER


there should be a lever that will loosen the tention on the belt so you can get it off. be sure to put the new belt on with the arrows facing the rotation (some sanding belts do not need to be oriented this way, but check) otherwise the belt will come apart after a few rotations.

Mar 22, 2011 | Black & Decker 3 x 21 In. Dragster Belt...

3 Answers

How do you replace he belt on a 7447 Sander


To change belt:
1) Put front roller on floor and push down until roller locks back.
2) Put on new sand paper.
3) Loosen tracking screw until front roller is released.
4) With sander running, use tracking screw to center belt.

Oct 10, 2010 | Black & Decker BR300 3''x18'' Belt Sander

1 Answer

How do I change the sanding belt on my 7447 belt sander


To change the belt, you must release tension of the rollers by pushing the front roller straight back until you hear it click and lock in position to change paper. Remove old paper and replace with new paper. Make sure if new paper has directional arrows to install properly.
Now you must release the front roller to put tension on paper. To do this push the front roller from the side that has the adjustment screw. This will release the front roller and allow it to go back into position. Be careful as it pops back quickly and with some force.
Turn on sander and adjust centering of paper with adjustment screw found near the front and side of sander.

Aug 27, 2010 | Black & Decker 3"x21"HD Vs Belt Sander

1 Answer

After installing new belt, on Porter Belt Sander 352VS #6 the belt drifts of to one side until it comes completely off. How do I stop this?


There is a tracking adjustment knob on the side of the sander--adjust one way or the other until it tracks properly. This is something that will change by itself as the sander is being used--check periodically.

Feb 13, 2010 | Porter Cable 362 12 Amp 4 Inch By 24 Inch...

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

Skill belt sander belt stops moving


most belt sanders are simular,if you have right size belt,there should be a lever between the belt wheels,pull lever out,put belt on,then close lever,some also have adjusting knob,turn clockwise to tighting.

Sep 30, 2009 | Tools & Hardware - Others

1 Answer

Routine Maintenance?


This is an older model tool, not many parts are available. The problem will continue if you don't address it. The reduction geartrain is "permanently" (not so much) lubricated from the factory with a heavy weight grease. With age, time and enough use these less-expensive gearboxes get hot and the heavier solids separate from the oil base, causing the oily smell you are experiencing and presence of oil.

If you are mechanically inclined; I attached a link to the exploded diagram, you can open the geartrain, clean all the old stuff up and if the heat wasn't because the parts are visibly worn; then use a moly-based bearing grease from your local autoparts store (comes in a can, looks like a waxy paste). Coat the teeth so the grease fills the tooth gaps, but don't get carried away. Re-assemble and you should be good to go.

Honestly, this is an inexpensive sander, Ryobi makes a value priced model that works great if you choose to replace it verse service it.

Here's the diagram link

http://www.blackanddeckerservicenet.com/Products/DocumentView.aspx?productid=18190&typeId=1379&documentId=1235

Jan 28, 2009 | Tools & Hardware - Others

2 Answers

Porter Cable 352V belt sander eats belts


I've never had any particular problems with norton belts. All belts will require some adjustment as they wear in,however.
Try this: Put a new belt on, turn the sander upside down and rest it on the front handle. Get a good grip on the rear handle and turn it on while you use your other hand to turn the tracking adjustment. Just center the belt on the drum. I don't know what the manual tells you to do, but that's what matters, that the belt rides across the platen without hanging out loose in space or running up against the housing of the machine. If it does ride in against the housing, and you don't track it away, eventually you'll have a groove worn right through the side of the machine.
If you try this, and it still doesn't work, make sure the drums are secure and look right. Is it possible the machine was dropped and the drum bent? If so, parts will have to be replaced.
The only other cause I can imagine is that there is some kind of something jammed inside the housing that is protruding into the belt pathway that they're getting caught on, but that seems unlikely. Check anyway. Look with a flashlight.
There are better belts available than Norton, but they should work.
Some belts have an arrow on the inside of the belt indicating the direction of travel. Make sure if yours does, that you put it on that way. I try to install them so the joint will tend to ride up over the work instead of the work tending to want to tear the joint apart, but this is not always obvious, depending on the mfr.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread. If I've managed to answer your question or solve a problem, please take a moment to kindly rate this post....thanks!

Oct 13, 2008 | Porter Cable 3" x 21" Electronic Variable...

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