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Thread: Table Saw Problem UPDATE!!

  1. #1
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    Table Saw Problem UPDATE!!

    Have a question. I have a Steel City uni-type table saw. Very similar to a Delta, the people that started Steel City tools were ex-Delta people.

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    The blade on the saw is slowly creeping to the right. As you can see in the picture below, this was a zero clearance insert. Over time a gap has formed to the left of the blade. Something appears to be moving. Or am I nuts??

    Notice the white arrows pointing on the insert. This is happening on my other inserts also.

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    Last edited by Paul Douglass; 02-16-2016 at 10:07 PM.
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  2. #2
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    That's a trunnion mounted saw correct?

    So odds are the bolts that hold the table to the base are loose would be my best guess.

  3. #3
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    [QUOTE=Ryan Mooney;446927]That's a trunnion mounted saw correct?

    So odds are the bolts that hold the table to the base are loose would be my best guess.[/QUOTE

    my first thoughts also

  4. #4
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    Is that the trunnion we are seeing through the gap, or is the washer on the wrong side of the blade? Something isn't right, but it does seem strange that the movement seems parallel. If the top were loose would the movement be so parallel?
    Last edited by Ted Calver; 01-31-2016 at 06:55 PM.

  5. #5
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    My guess is that the arbor shaft has shifted in the bearings. There should be either a locknut or a snap ring on the sheave (pulley) end of the shaft to keep it from shifting.
    Jim D.
    Adapt, Improvise, Overcome!

  6. #6
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    The gap does appear to be too large for this to be the issue but do you use both thin and regular kerf blades on the saw? Another possibility might be not returning the blade back to 90 degrees after making bevel cuts.
    Dave

  7. #7
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    Are your cuts square ? Seems to me that if the blade is that far off getting a perfect perpendicular cut would be impossible and you would notice the wobble.

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    No idea how to get rid of this thumbnail picture ??
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  8. #8
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    I'll see if I can answer some questions. It is a trunnion mounted saw. Do the trunnion mount to the table to or are there mounting for it separate to the table top. If they mount to the top they would move with the top, and this blade creep would not happen. I haven't had time to hunt for my owner manual which of course was not where I thought it was.

    What you see in the picture is the plate the saw blade goes up against, then the washer and nut go on the other side of the blade.

    The saw cuts square and true.

    I have thin and regular thickness blades, I have separate zero clearance inserts for each, I have zero clearance inserts made for each. It is happening on both.

    This has been going on for some time and because of it I check to see if my cuts are square often, They are, but something is still moving.

    I have checked the bolts and such that I can get to easily, but never went to much trouble digging into it because I do not know what to look for. Guess it is time to try to figure it out.

    Course Steel City is now out of business, don't even know it I can get parts if I need any.
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  9. #9
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    Ted and Jim's point about it staying parallel being weird of well taken.

    For most of these types of saws the trunnion and table are independently mounted to the cabinet hence my original guess that the top was slipping. It's still possible that it's slipping exactly parallel but that does seem rather unlikely.

    Almost all of these types of saws are built more or less the same which is convenient because the layout of this and the delta and the griz 1023/690/691 and some eras of PM saws are all pretty similar and sometimes you can shoe horn parts between them, but I'd bet you just have something simple loose.

    I think Jim's guess is a good one given the evidence at hand and would be a good thing to check anyway because if that's what's happening it could be a heck of a wreck in waiting. That'll mean tearing into most of the same guts I think, although you might be able to get into that area past the motor guard though so I'd try that first.

    If you do have to pull the table watch for any little shims and track where they came from if there are any, makes reassembly a bit less painful. You'll have to realign it as well in that case which isn't hard but is slightly tedious.

  10. #10
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    That fact that it's moving and staying perfectly parallel makes me wonder if the arbor shaft or something internal is moving. My guess is that Jim's on the right track.

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    Last edited by scott spencer; 02-05-2016 at 02:45 PM.
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