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Ryobi Belt sander drive/alignment problem

Ryobi belt sander model BE321: could not get belt to track. it ran about 3/4" our from housing and stayed there. at about the same time the sander started jumping as if the timing/drive belt were skipping cogs on the drive pulley. Replace the belt. Sander ran less than 5 minutes and belt quit moving even though motor was running. Removed drive pulley. It was wallered out so that drive shaft was spinning inside of it. Replaced pulley with new one. Very soon the sanding belt started running off again and sander started jumping as if timing/drive belt was skipping. Sander was very hot on bottom - housing, rollers, sanding belt, etc. Suspect something wrong in sanding belt alignment mechanism, causing strain on rollers, pulleys, etc. If so what's the fix? Or any other ideas?

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  • Bill Wallace
    Bill Wallace Mar 25, 2014

    It's obvious that none of the responders are familiar with the Ryobi BE321

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

cloe2594
  • 29 Answers

SOURCE: Dremel belt/disc sander

see the manual

Posted on Nov 06, 2008

mikeymiddles
  • 58 Answers

SOURCE: Loose sanding belt

Hi, Consult your user manual for the instructions to install a new belt.  Follow these instructions selectively to tighten the belt tension. Here they are....  
CHANGING DRIVE BELT


  Using a phillips head screwdriver, remove the two screws
in the center of the pulley cover.
  Remove the cover.
  Raise sanding belt to the vertical sanding position.
  Next, loosen the hex head set screw. Raising the motor
pulley releases the belt tension.
  Remove the old drive belt.
  Fit the new drive belt on the drive pulley first and then on
the motor pulley.
  Test belt tension by squeezing the belt with your fingers.
  Adjust the belt tension with the hex head set screw until
there is about 1/4 in. (6 mm) of give.
  Tighten the belt tension nut securely.
Note: Excessive tightness on the drive belt may cause
increased noise and overload the motor. Excessive
looseness on the drive belt may cause the drive belt to
fail prematurely and make a severe chattering noise.
  Using a phillips head screwdriver, reinstall the pulley cover
and the two phillips head screws. Tighten securely.


Good Luck!  Middles

Posted on Jan 08, 2009

comax
  • 154 Answers

SOURCE: Sanding Belt Slips Badly

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

Posted on Apr 14, 2009

  • 384 Answers

SOURCE: Tool Shop Belt sander - can't align belt tracks to thee inside

The problem is that you have not set the adjustment properly. Back off the adjustment screws,slide on the belt and center it over both rollers, addust a little at a time both screws, after belt begins to tighten up stop adjusting. Turn the power switch on for about 1 second. Is the belt tracking? Adjust as necessary. Try the power again for longer and longer periods untill belt tracks in the center of the rollers. Tighten nuts to keep adjustment screws from backing out.

Posted on Jun 12, 2009

  • 1 Answer

SOURCE: Belt slipping

I have a Ryobi sander with a belt slipping issue as well. The problem seems to be in the design, not on the user end. The drive barrel is made of a semi-hard, non-gripping material. Wood dust becomes a final release agent that breaks any grip that the barrel may have had.
To compound the problem, the more the belt slips the smother the underside becomes allowing for greater slippage.
I now know why this model was the least expensive unit. >.<

Posted on Jul 11, 2009

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1 Answer

How do you adjust the belt tension on the Ryobi BE321 belt sander?


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http://www.ereplacementparts.com/ryobi-be321-belt-sander-parts-c-7931_7932_15013.html

Luke

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The problem is that you have not set the adjustment properly. Back off the adjustment screws,slide on the belt and center it over both rollers, addust a little at a time both screws, after belt begins to tighten up stop adjusting. Turn the power switch on for about 1 second. Is the belt tracking? Adjust as necessary. Try the power again for longer and longer periods untill belt tracks in the center of the rollers. Tighten nuts to keep adjustment screws from backing out.

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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.

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2 Answers

Belt slipping


I have a Ryobi sander with a belt slipping issue as well. The problem seems to be in the design, not on the user end. The drive barrel is made of a semi-hard, non-gripping material. Wood dust becomes a final release agent that breaks any grip that the barrel may have had.
To compound the problem, the more the belt slips the smother the underside becomes allowing for greater slippage.
I now know why this model was the least expensive unit. >.<

Jan 08, 2009 | Tools & Hardware - Others

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