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Band saw runs in surges

Band saw runs in quick surges, cutting at normal speed than slower, normal, slower etc

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  • jordanhelges Oct 07, 2009

    no the motor sounds fine with no odor. When the blade is off the motor sounds like it is running at the correct, constant speed. When the blade is put on and tensioned, you hear a ticking sound and it cuts through the wood in small surges. I have made sure the wheels are coplanar and had to shim the top wheel to achieve the correct alignment.

  • Johnny
    Johnny May 11, 2010

    sounds like the motor is frying up.. does it sound normal? any burning odor?

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Posted on Oct 07, 2009

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Check your power source , make sure nothing is preventing the wheels from turning freely that the bandsaw blade rides on, maybe some lubrication somewhere

Posted on Oct 07, 2009

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If these bushings are getting that hot, then you may have the wrong speed or a non-optimum blade. The blade pitch (number of teeth per inch) must be lower the thicker the wood is. If there are too many teeth trying to cut at the same time you have to push harder to get enough pressure to cut and that puts more force on the guide bushings. There are a variety of pitches available even for the narrower scrolling blades. If you have to move up to a wider blade, there is a little trick to help you cut a slightly smaller scroll radius - round off the back side of the blade with a sharpening stone.
Also, with oak, you may need to use a slower speed to keep the blade from heating up - although a hot blade will show up as more of a problem with the lower guide bushings only. Your saw might have multiple steps on the pulleys, allowing you to move the belt to a slower speed.
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When cutting wood with band saw saw will cease up


This could have many causes...depending on the model of saw, the wood being cut, the blade you're using, etc. etc.
Check that the blade is correctly installed, up to tension, and sharp. Make sure the wheels run smoothly on their on, and under power. Check the horsepower of the motor, and make sure to keep the feed rate down within the motor's capacity. Finally, don't twist the work being cut to a smaller radius than the size blade will handle, or you will bind the blade in the cut.
If you are cutting wood with pitch or grain that is likely to be under tension, perhaps you need to insert a wedge into the cut to prevent the work from pinching the blade as it continues the cut.
I hope that leads to a solution. Sometimes all you can do is feed slowly and be patient...

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I just purchased the ryobi 9 inch bandsaw, used it once or twice and have noticed that the teeth on the blade are crooked. is that a typical problem, is it a problem at all?


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