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  #1  
Old 07-07-2022, 12:23 PM
staybusy staybusy is offline
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Default Oh God no - Part II

This one I was sure would be a disaster..

I'm trying to do some work on my bandsaw and this god awful squeaking starts blasting my ears. I trace it to the top wheel, notice there's a bolt (part of it was stripped), 2 nuts (spinning freely) and 2 washers.. last owners modification I think

I take everything off, get a nice fresh chinesium bolt, cut it to the right length so I don't need the extra nuts anymore, put washers, lightly tighten it, job done. Flip the switch. The thing breaks instantly..

I was sure I was gonna have a hell of a time extracting it.. but thankfully I backed it out with a center punch and hammer. I got real lucky.

Any tips to stop that squeaking? I assume pull the wheel off and clean it or grease it or something?

Do I need a bolt with specific hardness? Can't risk that shit breaking again.
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  #2  
Old 07-07-2022, 01:34 PM
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Shade Tree Welder Shade Tree Welder is offline
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You might need new bearings, generally they used sealed or shielded bearings.
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  #3  
Old 07-07-2022, 02:20 PM
staybusy staybusy is offline
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Quote:
Originally Posted by Shade Tree Welder View Post
You might need new bearings, generally they used sealed or shielded bearings.
I might have some new ones on hand in the right size but they're the plastic shielded type, is that alright?

Edit: reading comprehension = 0. Just noticed you mentioned sealed is ok.

Last edited by staybusy; 07-07-2022 at 02:29 PM.
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  #4  
Old 07-07-2022, 03:20 PM
staybusy staybusy is offline
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There's no bearing (cleaned grease and dirt to make sure), there's a washer and steel sleeve then a shaft and steel block which seems loose and tilted off the the side.

I can align the block and tighten the bolt on the back end. There's also a hex screw, what does that do?

Should I put a light coat of grease when I put things back together?

https://www.youtube.com/watch?v=2hYMRqvOrYY
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  #5  
Old 07-07-2022, 04:28 PM
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You need a bolt with a spacer between the shaft and the washer so the pulley could spin with the bolt tight.
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  #6  
Old 07-07-2022, 04:48 PM
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Pull the band wheel off there has to be a bearing inside there, even the cheap
china saws have bearings. But yeah if there is no ball bearing just a journal
bearing, definitely grease a good #2 wheel bearing grease (GC-LB).
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  #7  
Old 07-07-2022, 04:52 PM
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Quote:
Originally Posted by staybusy View Post

I can align the block and tighten the bolt on the back end. There's also a hex screw, what does that do?

Should I put a light coat of grease when I put things back together?

https://www.youtube.com/watch?v=2hYMRqvOrYY
youtube does not work on my slow PC. ... I would like to see a side picture of how the tracking hinge works.
I would guess the setscrew is for tracking adjustment.

Likely a cast-iron wheel and a steel shaft no bearing... at least grease or better, way oil.

for my saw I was going to ream the wheel out for needle bearings and try a shoulder bolt for a replacement shaft but ran into a problem my saw does not have a tracking adjustment something I would have to add.

As stated above by digr.
the wheel must free-wheel (blade removed) when tightened with that screw you broke.... adjust the gap with spacers so you do not lock the wheel from free-wheeling..
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Last edited by GWIZ; 07-07-2022 at 04:59 PM.
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  #8  
Old 07-07-2022, 06:08 PM
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I'll take a look at mine the next time I'm at the shop. I couldn't imagine there not being some kind of bearing/bushing to allow the pulley to spin freely. I don't think that bolt and washer are made to "spin".
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  #9  
Old 07-08-2022, 01:00 AM
staybusy staybusy is offline
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the bad news is all my projects are getting delayed from bandsaw cleaning and maintenance, the good news is I'm learning a lot about the tool and it's starting to look new again.

PS - it looks like a steel bushing was pressed into the wheel, it's just steel on steel
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  #10  
Old 07-08-2022, 05:44 AM
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Quote:
Originally Posted by staybusy View Post
the bad news is all my projects are getting delayed from bandsaw cleaning and maintenance, the good news is I'm learning a lot about the tool and it's starting to look new again.

PS - it looks like a steel bushing was pressed into the wheel, it's just steel on steel

It’s probably not just steel. It probably has a bit of bronze on it, or hardened steel . Steel on steel would not be good. It would eat itself in use. One metal will be dissimilar to decrease wear, and the bushing should be the softer one, to be the sacrificial one designed to be replaced.


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