Trying to take off table saw blade - NEED HELP

[david press]

There appears to be a notch keeping me from removing the blade. It seems like it should be easy but I’m having trouble. Thanks in advance for you help.

[Richard Coers]

Looks like a wrench slipped and deformed the shaft.

[Nick Crivello]

Looks like a wrench slipped and deformed the shaft.

That wouldn’t keep the blade from coming off.

I’m actually a little confused at what we’re looking at. What saw is this?

[Bill Howatt]

It does look like something has deformed the round part of the arbor beside the blade. If so, a little touch-up with a file should clean it up.
Is there supposed to a washer or special nut used to fasten the blade? It looks like perhaps the nut was run down and jammed against the shoulder?

[John TenEyck]

I wonder if originally there was a washer under the blade, so that the blade was spaced out over that shoulder? That's the way many circular and chopsaws are put together.

John

[Lee Schierer]

The flats on the threaded portion appear to have been machined to be used for a wrench. They are too smooth to have been done by accident. The threaded shaft probably has matching flats on the side we cannot see.

Please tell us the make and model number of the saw.

[Brian Runau]

The groove at the bottom of the threads looks to be intentional and a machined groove. The larger diameter just below it, I don't think is deformation. The diameter is to uniform in my opinion.

Have you had the blade off this before? Looks like that whole threaded shaft assembly is intended to hold the blade on? Bottom diameter is larger than the hole in the saw blade, not sure how you would have installed the blade over this? Is it possible the flats on the threaded portion of the shaft are there intentionally to allow you to use a wrench to remove the complete threaded shaft assembly? Like others asked, what saw is it, parts blow up would tell you.

Brian

[Richard Coers]

This is what I am looking at as deformation.
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[Ken Fitzgerald]

Could that be what is left from an aluminum spacer/adapter to fit a blade to the arbor size. I have had to use those on my old circular saw.

[jim sauterer]

I’m with John there should be a washer blade another washer and nut.my 2 cents

[Brian Runau]

This is what I am looking at as deformation.
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Did you put this blade on the machine? What brand and model is the saw? Thanks. Brian

[Bill Howatt]

That part circled in the picture is what I consider a deformation that could be cleaned up with a little filing. I hate to say this but it does look somewhat deliberate and I hope it wasn't done to perhaps better center the blade. Anyway, a closer examination may reveal if this is what is binding the blade.

[Rich Engelhardt]

If it makes any difference - that blade looks like it's a 7 1/4" Plywood blade.

[Maurice Mcmurry]

We need a view of the other side of the blade and arbor as well as the nut.

[david press]

Thanks all - I treated it as a deformation as suggested and trimmed it down with a Dremel tool. Old blade is off and new one is on and looks like it’s tight with no shimmy.

[Bill Dufour]

That looks like there should be a washer with a oval or diamond hole then the blade then a round hole washer then the nut. Look like the oval hole washer was staked on so it was not supposed to come off.
Bill D