What's wrong with this band saw? - Router Forums
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post #1 of 25 (permalink) Old 02-09-2013, 08:47 AM Thread Starter
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Default What's wrong with this band saw?

I recently purchased a used Inca 342.186 band saw. It's probably 20 years old. Both the thrust bearings were seized, so I purchased new ones. I noticed that the upper bearing had been badly scored near its hub by the back of the blade and assumed the previous owner hadn't known how to properly adjust the upper guide. Now, though, I can see what the problem was

The first two photos below show the guides with the table and top wheel removed. The third shows a close-up of the upper guide with the top wheel back on and a 1/2-inch resaw blade mounted. The back of the blade is clearly contacting the thrust bearing at nearly the center, rather than along the outer rim as it should - just as it did for the previous owner.

I can't see any way of adjusting the thrust bearing fore and aft within the guide housing. Nor will the guide housing adjust fore and aft - just up and down as you would expect.

Has anyone any thoughts on how to deal with this? Thanks in advance
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post #2 of 25 (permalink) Old 02-09-2013, 10:05 AM
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Are the gullets of the blade centered on the wheel? Weird they don't give an adjustment for different sized blades. Can you get a manual for the saw?
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post #3 of 25 (permalink) Old 02-09-2013, 11:57 AM Thread Starter
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The problem is not for various sizes of blade, Richard. The guides and the bearings slide in and out as they should. It's the position of the blade left and right (in the photos). The blade should be almost 1/4 inch to the right in the close-up so that it rides on the outside edge of the bearing.

I can't find a manual. Robin Lee of Lee Valley Tools (LVT used to handle Inca) posted manuals for a number of Inca tools in another forum, but only a parts manual for the band saw.
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post #4 of 25 (permalink) Old 02-09-2013, 01:53 PM
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From the photo, it looks like the tires are thicker than expected. Maybe replacement of the tires will bring the blade further from the center of the thrust bearing.

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post #5 of 25 (permalink) Old 02-09-2013, 02:10 PM
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From the photo, it looks like the tires are thicker than expected. Maybe replacement of the tires will bring the blade further from the center of the thrust bearing.
Very observant. That would surely solve the problem.
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post #6 of 25 (permalink) Old 02-09-2013, 02:23 PM Thread Starter
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From the photo, it looks like the tires are thicker than expected. Maybe replacement of the tires will bring the blade further from the center of the thrust bearing.
That might help. The tires are about 1/8 inch thick. How thin are replacements - anyone know off-hand?
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post #7 of 25 (permalink) Old 02-09-2013, 02:28 PM
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My 14" jet's tires are about 1/16".

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post #8 of 25 (permalink) Old 02-09-2013, 04:40 PM
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Uh, thinner tires would move the blade closer to the center of the bearing! Many bandsaws I have seen are set up that way. Don't know that there is an easy solution other than maybe a set of Carter bandsaw guides. Depending on what you gave for the saw the Carter guides may well exceed that price. May also be a ceramic guide available...that would reduce wear.

My Grizzly is setup the same way.. have changed bearings once in 18 years. YMMV.

I have found that hand tools are the best choice when I want to make mistakes at a slower rate of speed.

I don't suffer from insanity. I enjoy every minute of it.

Last edited by Dmeadows; 02-09-2013 at 04:42 PM.
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post #9 of 25 (permalink) Old 02-09-2013, 04:46 PM
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Closer to the center of the bottom bearing, yes. The pics concentrated on the top bearing.

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post #10 of 25 (permalink) Old 02-09-2013, 04:48 PM
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Closer to the center of the bottom bearing, yes. The pics concentrated on the top bearing.
Ralph, I don't care which set it is, if you reduce the diameter of the wheel, the natural tracking line will move toward the middle.. not the outside!

I have found that hand tools are the best choice when I want to make mistakes at a slower rate of speed.

I don't suffer from insanity. I enjoy every minute of it.
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