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Thread: Replacement table saw motor
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30th May 2018, 12:23 PM #1New Member
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Replacement table saw motor
I have a craftsman table saw model 315.228490. The motor is running slow and I believe I need to replace it. The part is no longer available though (980962-00). Any suggestions on a substitute that will fit?
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30th May 2018, 02:59 PM #2.
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I doubt many people will know what motor is involved based on the model number of the saw,
For the saw to work properly you will have to match the RPM & HP (this should be on the motor name plate)
Unless you are handy at metal work you will also have to match the frame size/geometry and arbor size you will have to pull the motor out and measure these up.
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30th May 2018, 05:10 PM #3Visit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.
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30th May 2018, 06:35 PM #4SENIOR MEMBER
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Instead of buying a new motor just have it repaired that way you have no issues with different mounts etc
It will most likely be cheaper
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30th May 2018, 10:27 PM #5New Member
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Thanks for reply! What type of store should I look for to make a repair on the motor?
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30th May 2018, 10:32 PM #6SENIOR MEMBER
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any motor repairing workshop will be able to do this for you.
for example:
emotors.co.nz
there should be a capacitor to run with the table saw, not only the saw motor you need to replace.
if you tell them what motor is for, they will be able to replace it with a similar motor
I had to replace my saw motor recently. you will need to watchout for the space within the table saw.SCM L'Invincibile si X, SCM L'Invincibile S7, SCM TI 145EP, SCM Sandya Win 630, Masterwood OMB1V, Meber 600, Delta RJ42, Nederman S750, Chicago Pneumatics CPRS10500, Ceccato CDX12
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31st May 2018, 02:42 AM #7Senior Member
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Its possibly a faulty run capacitor, as an alternative to the other suggestions. A motor repairer/rewinders will diagnose it for you. But it might be worthwhile replacing the motor. The plate on the existing motor should give a frame size. Those contractor saws only run a 1.5hp motor, which is usually an 80 frame size. If you are prepared to modify the motor mount, going up a frame size to a 90 would enable a 2 or 3 hp motor. Cost difference is minimal.
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31st May 2018, 03:16 AM #8New Member
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Ok, thanks. Will most motors using the 80 frame size mount directly with no modifications?
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31st May 2018, 05:39 AM #9Senior Member
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Size 80 is an IEC frame size. Since you're in the US, you most likely have a NEMA size motor, probably 56. Google for "NEMA Frame Size Chart" and match up your motor dimensions to be sure.
HOWEVER, that saw almost certainly uses an Open Frame motor. If the saw has been used much at all the motor will be packed full of sawdust. The sawdust can interfere with the centrifugal switch and prevent it from opening. That leaves the start capacitor connected and the motor won't come up to speed, even with no load.
Compressed air through the vents may be enough to clean it, but if not, you might have to open the motor and give it a thorough cleaning. A motor shop can do that for you at a price if you're uncomfortable with opening the motor. Google shows three motor repair shops in Columbus and a few more in the surrounding suburbs.
If your "runs slow" symptom is only under load and the speed is fine at no load then you have a different problem. As suggested above, check belt tension first.
One other thing, if your motor shaft has a flat instead of a spline you could have a loose set screw on the pulley.
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31st May 2018, 05:51 AM #10New Member
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Thanks so much!
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