Nutool belt sander, how do l tighten up the sanding belt as it keeps on slipping off to the side? Terry

Contact Nutool directly to inquire.

It sounds like the sand paper itself is slipping. There should be an adjustment to tighten the pressure on the sand paper itself.

I suggest doing a search on eBay. Depending on where you live, you may need to find them in another country. A Google search might help first but I found these on eBay Ireland.
2 Pack Of 3 Sanding Belts Nutool Nu Tool NTG6L 6130 Bench Sander

On the side of the sander there is a black triangle shaped cover with 3 screws holding it in place. Remove the screws and you will see the drive belt and 2 pullies or gears. The belt will be attached to the gears. Remove and replace the belt. Typically the belt is broken so the only thing you will need is to locate a new belt and slip in over the gears with the side with the teeth facing the gears. This keeps the belt from slipping. Reinstall the cover and you are ready to go back to work. The hardest part may be finding a supplier for the belt.

Hi Anthonyk,

The view of the b&d br300 I saw was rhat the sanding belt goes automaticly.Maybe you need to check the system or try to telephone local shop where you bought it .

Greatings from holland

Appie

there isnt enough tension on the belt, hence the side to side movement. keep tightening the spring until it stops

All sander will have two adjustments. The first is to release the sanding belt by retracting the position of one of the rollers. The second adjustment moves one of the rollers belt tension from side to side. The roller angular position is changed, sometime by a single knob or screw, and sometimes by two separate adjusting screws.

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.

Check and see if the pulleys on the sander are not glazed this somtimes will cause the belt to slip. Give them a good cleaning. If this does not help there is a good chance the spring on the belt tensioner is weak and need changed.

Hop this helps