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Band saw adjustment...
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Topic: Band saw adjustment... (Read 236 times)
OkKeith
Trad Bowhunter
Posts: 1237
Band saw adjustment...
«
on:
February 26, 2010, 06:35:00 PM »
Hey Guys,
Was working on some bows and needed to adjust the blade guides on the saw, but can't find my stinking manual for the thing.
How close do the roller bearings need to be to the blade? Just barely kissing it or close enough that they always roll while the blade is moving?
Thanks for the help.
OkKeith
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In a moment of decision the best thing you can do is the right thing. The worst thing you can do is nothing.
Theodore Roosevelt
kennym
TG HALL OF FAME
Trad Bowhunter
Posts: 17317
Re: Band saw adjustment...
«
Reply #1 on:
February 26, 2010, 07:10:00 PM »
If I run them too close(bearing turning) the dust builds up on the bearing and makes noise and is most likely hard on bearings.
So I try to tune them as close as I can without turning while NOT cutting. When I start cutting,they will usually turn.
I "think" the blade backer bearing says .016" from blade on mine,but I run it the same way,if it doesn't turn while not cutting,good enuff!
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Stay sharp, Kenny.
https://www.kennysarchery.com/
No-sage
Trad Bowhunter
Posts: 483
Re: Band saw adjustment...
«
Reply #2 on:
February 26, 2010, 07:10:00 PM »
Do you have the bearings that go on both sides of the blade, or solid blocks on either side of the blade and a bearing behind?
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jonathan creason
Trad Bowhunter
Posts: 332
Re: Band saw adjustment...
«
Reply #3 on:
February 26, 2010, 07:28:00 PM »
Most everything I've read says to stick a dollar bill between the blade and the guides. Tighten the guides down and then remove the bill.
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Tater John
Contributing Member
Trad Bowhunter
Posts: 506
Re: Band saw adjustment...
«
Reply #4 on:
February 26, 2010, 08:12:00 PM »
Any paper of thickness .004 or a couple more thousands between the side guides and the blade is ample clearance. The blade gullet should be just in front of the side guide faces, 1/32"-1/16". Some machines use roller bearings some don't.If the blade teeth get past the bearing faces you will lose the set, the blade is ruined. The bearings behind the blade are thrust bearings. track the blade then bring the thrust bearings to the backside of the blade. I prefer the blade to NOT ride against the thrust bearings once I stop feed pressure. There are guide bearings below the table as well and those will be set using the same parameters. just takes a little fiddling
Rusty
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"Mystic rhythms,Under northern lights or the African sun,Primitive things stir the hearts of everyone"
woodworker
Trad Bowhunter
Posts: 106
Re: Band saw adjustment...
«
Reply #5 on:
February 26, 2010, 09:36:00 PM »
Hi OkKeith,
Tater John called it the thrust bearings should only spin once you have applied cutting pressure and the space is as he advised on the sides whether they are cool blocks are rollers, the placement should be back to the hollow of the blade so the full tooth should be available. The tension also is a large factor in performance so adjust it accordingly and test the cut. All the best, Joe
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2treks
Trad Bowhunter
Posts: 5193
Re: Band saw adjustment...
«
Reply #6 on:
February 26, 2010, 09:56:00 PM »
$1.00 away
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C.A.Deshler
United States Navy.
1986-1990
"Our greatest fear should not be of failure but of succeeding at things in life that don't really matter.”
~ Francis Chan
Tater John
Contributing Member
Trad Bowhunter
Posts: 506
Re: Band saw adjustment...
«
Reply #7 on:
February 26, 2010, 10:17:00 PM »
Blade tension, thats an important detail that shouldn't be left out. Thats probably the worst sin I see when a blade gets changed. On chainsaws too... WAY to tight
Rusty
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"Mystic rhythms,Under northern lights or the African sun,Primitive things stir the hearts of everyone"
OkKeith
Trad Bowhunter
Posts: 1237
Re: Band saw adjustment...
«
Reply #8 on:
February 26, 2010, 11:25:00 PM »
Thanks for the help guys!!!!
No-sage, the saw has a bearing set either side and behind both above the table and below. I had a rough turning bearing on the top-side behind the blade so I replaced all of them.
The way the economy is, I'm not sure if I have a dollar bill or not, but I do have an excellent set of thickness gauges.
I'm trying to get a couple of bows done before OJAM!
Thanks again for all the advice!
OkKeith
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In a moment of decision the best thing you can do is the right thing. The worst thing you can do is nothing.
Theodore Roosevelt
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