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Re: blade popping off front wheel
Is the axle tight? Has the tool been dropped to warp the frame? But a quick fix if everything else is OK is to loosen up the axle and put a THIN metal shim on the backside of the axle and then tightening it back down.
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I have no experience of portable bandsaws but do have some experience of workshop bandsaws.
One wheel is generally movable in order to "steer" the blade and careful adjustment is needed with the blade guides retracted until the blade runs full on the wheels. The blade guides are then brought back to prevent the pressure against the work from pushing the blade off the wheels.
I suggest you to check the manual of the saw. One of the easiest technique I applied on installing a tire on my bandsaw is I lay the band wheels on a wooden table or any wooden surface. Outside the wheel, I buried 6 nails around it , like a half inch away from the wheel. Then, I strecth over the urethane tires outside the nails then afterwards I pulled the nails one by one. When you re-install the wheel, make sure the wheels are in balance. To check this , you need to spin the wheel freely by hand and observe any high and low points for the new tires. Also , before removing the wheels, I advise to mark the front site of the upper/lower wheels. This ensures the wheels will be placed with the correct side facing out.
Blades slip off the wheels on these saws is because one or both wheels are not turning true to the blade. This can be caused by: - Missing or worn tires on the wheels. The rubber tires have to be on the wheels and they have to be in good condition. - Occasionally the screws holding the sprocket on the driven wheel come loose and the wheel will wobble causing the blade to come off. - Both wheels ride on bearings and shafts that, if seized, worn or broken, will let the wheel wobble enough that the blade won't stay on. - If the blade is stretched or twisted from use it won't stay on very well.
A bandsaw tire is usalley defined by the size of the saw. A example is a 12" x 80" bandsaw means that the wheel (tire) is 12" and the blade is 80" . If you are unsure just measure the wheel size.
Then go online and type in (example) 12" bandsaw tires.
You will soon see that there are a few different choices in material , the stock ones from sears are cheap but will do the job. Then there are the poly orange ones that cost more but don't slip like the stock ones.
Also type in bandsaw tires on YouTube this may help because changing them can be a pain.
Hope this helped, I asked the same questions when I got my first Saw years ago and am glad to pass it on. If this helped I would apperciate a comment.
My jet bandsaw did same thing only fix was new tires .Tires are supposed to be tite on wheel .get wood dowels between tire and wheel and roll new tire onto wheel. If desperate could glue on with weather strip adhesive.put bandsaw blade on both tires spin wheels with power off till blade is running in center of wheel by adjusting top wheel in or out. When done adjust blade guides to blade and bearings to back of blade .This is top and bottom of cutting area
ALL BAND SAWS HAVE AN ADJUSTMENT FOR THE BLADE TRAVEL WHEN I WOULD REPLACE MINE I WOULD ROTATE THE TOP WHEEL BY HAND TO CHECK THE ALIGNMENTAND WATCH WEHICH WAY THE BLADE STARTS TO TRAVEL THERE SHOULD BE AN ADJUSTMENT ON THE TOP WHEEL THAT TILTS THE WHEEL IN OR OUT JUST A TINY TURN WILL MAKE A BIG CHANGE
It's known as a tire. Do a search for bandsaw tires online and you'll turn up a variety of sources....
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 just a moment to rate this post....thanks!