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Broken Bandsaw Tensioner

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Forum topic by MacsShop posted 423 days ago 1483 views 1 time favorited 29 replies Add to Favorites Watch
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MacsShop

12 posts in 424 days


423 days ago

Topic tags/keywords: question bandsaw

So i got this new bandsaw not too long ago and a buddy of mine was using it but did not make relief cuts and he put to much strain on the blade then all he heard was a ‘pop’ and the blade lost tension. I tried re tensioning it but when i turn the nob it seems like nothing is happening. It looks like the spring in the back lost tension or something, i dont know. Some help would be nice, i included pictures of my band saw.
Oh and first post, booya

-- Mac, Ottawa


29 replies so far

View OhioMike's profile

OhioMike

44 posts in 767 days


#1 posted 423 days ago

Here is what mine looked like when it broke.

Your mechanism may not be broken in the exact same place, you’ll need to remove it to get a look.

If King doesn’t sell the part, I’ll bet Grizzly has one that fits.

Mike

View REO's profile

REO

582 posts in 679 days


#2 posted 423 days ago

did the nut strip out? this type of adjuster is notorious for that. I have fixed several by making a new nut that is thicker and making a new screw that has a higher percent thread.

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MacsShop

12 posts in 424 days


#3 posted 422 days ago

The nut and screw are perfectly intact. Mike I took off the top wheel and nothing seems to be broken. I think it’s just me and the lack of knowledge I have about this tool haha. I still won’t tension.

-- Mac, Ottawa

View OhioMike's profile

OhioMike

44 posts in 767 days


#4 posted 422 days ago

With the wheel off you can now remove the sheet metal guard and the adjuster should lift straight up. I’ll bet REO is correct and you’ll find stripped threads on either the rod or the nut.

Mike

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REO

582 posts in 679 days


#5 posted 422 days ago

have you removed the tension screw and evaluated the thread. The first picture shows a worn thread on the adjuster.

View Cole Tallerman's profile

Cole Tallerman

389 posts in 790 days


#6 posted 422 days ago

If you want to replace it, any mechanism from carter, grizzly, powermatic, jet 14” bandsaws will fit. This will also give you quick release.

View MacsShop's profile

MacsShop

12 posts in 424 days


#7 posted 421 days ago

Nothing seems to be striped

-- Mac, Ottawa

View OhioMike's profile

OhioMike

44 posts in 767 days


#8 posted 421 days ago

Unscrew the tensioning knob. Unscrew it all the way and take it out and inspect it. Look at the nut it screws into as well.

Pics of the tensioning knob (and its shaft) as well as pics of the nut would be great if you can.

Mike

View MrUnix's profile

MrUnix

466 posts in 804 days


#9 posted 421 days ago

What Mike said. The threads on the wheel shaft that you keep showing have nothing to do with tensioning. Below is a picture of all the parts to the tensioning assembly. Pull yours off completely so you can remove the tensioning rod and knob to inspect. Check the threads on the rod to make sure they are not stripped. Do the same with the nut (less likely but still a possibility). Also make sure your spring is not broken.

Cheers,
Brad

PS: The parts shown above are for a Delta BS.. Yours is a clone of the Delta, so the parts are basically identical.

-- Brad in FL - To be old and wise, you must first be young and stupid

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MacsShop

12 posts in 424 days


#10 posted 421 days ago

The thread looks good

-- Mac, Ottawa

View OhioMike's profile

OhioMike

44 posts in 767 days


#11 posted 420 days ago

Are you certain the threads are good? From the picture, it appears many of the threads have lost their sharpness.

1> Try to push the nut up the shaft and see if it will jump over the threads. Push the nut hard and wiggle it too. Were you able to make it jump a thread? If not, advance the nut a couple of turns and try again. Keep going until you’ve tested the threads all the way up the shaft.

Mike

View MacsShop's profile

MacsShop

12 posts in 424 days


#12 posted 420 days ago

I put the nut in my vice and pushed and wiggled as hard as i could and they did not jump

-- Mac, Ottawa

View jumbojack's profile

jumbojack

1156 posts in 1229 days


#13 posted 420 days ago

From here it looks like the nut is outside the tensioner. last time it was detensioned it went too far out. The nut actually compresses the spring, so it must ride inside the housing. hth

-- Made in America, with American made tools....Shopsmith

View REO's profile

REO

582 posts in 679 days


#14 posted 420 days ago

jumbojack has a point. it is possible that the nut is spinning outside the housing.

View MacsShop's profile

MacsShop

12 posts in 424 days


#15 posted 417 days ago

i put it all back together and made sure the nut was in the housing. when tightening it the spring doesn’t compress. any clue on why that is happening?

-- Mac, Ottawa

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