Bandsaw guide bearing

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Forum topic by D_Allen posted 03-07-2011 02:00 AM 1365 views 0 times favorited 3 replies Add to Favorites Watch
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495 posts in 2753 days

03-07-2011 02:00 AM

Well, I never was good at this kind of math.
I have a 10” bandsaw that has speed of 2780 ft per minute.
The guide bearings are 19mm in diameter, which would make them about 2.35” in circumference.
So, how fast is the bearing spinning?

Is it 2780 times 12” per foot
divided by the circumference?
which would be about 14,200 rpm?

That would fall within the rating of the bearings I have found for replacement. Although the double sealed ones from McM-Carr are $16.00 each. That’s kinda steep!

What happened? Well, I have the sears brand and one of the lower bearings frooze up and unscrewed itself.
Then it proceeded to fall into the lower wheel chamber where it caught between the wheel and the door lever. It made a loud bang and scared the @&%$ out of me but the saw kept running. Only the latch for the lower door was damaged.
Now I want to replace all of the bearings.

TIA all.

-- Website is finally up and

3 replies so far

View barryvabeach's profile


159 posts in 3013 days

#1 posted 03-07-2011 03:35 AM

The formula sounds right to me, but what do I know. I do know you want sealed bearings. If you have the 10 inch that looks like the Rikon, it came with shielded bearings, not sealed, and they caked with dust pretty quick. You might want to try Accurate Bearings and see what they give you for a quote, ask for Lynn, she can point you in the right direction in terms of bearings as long as you have the dimensions.

View lew's profile


12019 posts in 3724 days

#2 posted 03-07-2011 04:51 AM

I don’t know about the math but when the guide bearing froze up on my bandsaw, I took the old bearing to a motor repair shop. They had exactly the same size and it’s been working great ever since.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View D_Allen's profile


495 posts in 2753 days

#3 posted 03-07-2011 05:14 AM

Thanks berry on the difference between shielded and sealed. I know the ones that are in there now are junk.
There is a place nearby that sells mainly bearings so I’ll give them a call tomorrow.
I also need to do some monification on it to allow a 1/8” blade to be used. I was going to use a slightly large OD size for the thrust bearing but they don’t seem to be available. I’ll just lengthen the slot about .03” and that should do it.

-- Website is finally up and

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