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Newbie question about a new table saw

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table saw
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5.9K views 13 replies 6 participants last post by  MadMark  
#1 · (Edited by Moderator)
Hello

I just bought a king belt 10 inch table saw. It's currently wired 110v and the motor is LR63420 model D

It's second hand and it doesn't seam to have any power. It winds up nice and almost right away it gets bogged down.

It has a brand new 60 tooth blade on it.

It won't even rip pine trim properly.

Any ideas?
 
#4 ·
As long as the circuit you have your saw plugged into is able to provide the proper current, switching to 240v won't help any. What is the current requirement of the saw (check motor data plate), what is the capacity of your wall circuit (should be 15 or 20 amp), and are you using any kind of extension cord?

First off, Fred asked if the belts are slipping, not if you had proper tension. Check to make sure the pulley isn't slipping as well - it could have a loose set screw or missing key. Take the belt off and spin the motor and arbor by hand. Check for any unusual noise, crunchy sounds or excessive/no resistance. I personally replace bearings in new to me used machinery regardless of their condition - I find it easy and cheap insurance against potential more costly damage down the road. Finally, a 60 tooth blade is not what you should be using for ripping. For ripping, you want fewer teeth. It could just be that your blade is the culprit, but without seeing it in action, that is hard to determine. Try again with a good 24 tooth ripping blade, or a 30-40 tooth general purpose blade and see how it goes.

Cheers,
Brad
 
#5 ·
Double check all your wiring, make sure the motor is wired for the proper voltage. Assuming it is an induction motor there is not much to "wear out". Possible bad components: bad run capacitor, stuck centrifugal switch, wired wrong, and least likely but possible a bad winding. Bearings can go bad too but those are pretty easy to figure out and doesn't fit your symptom.
 
#6 · (Edited by Moderator)
Motors normally don't go weak. They run or they don't.

Unplug the saw and take off the drive belt. Spin the blade and motor by hand. Both should start easily and freewheel at least a little.

Replace the belt onto the motor and arbor and tension to 1/4" of play at the midpoint.

Check the brushes on the motor. This will bring motors back to life for just a few bucks.

Both the arbor and motor have bearings, if either or both are gummy or rough after cleaning the replace some or all.

If the blade and motor free spin then look to the wiring. A 220v motor on a 110v line will start slow and run hot with no power. Normally a 220v plug will NOT insert into any form of a 110v outlet.

What cord was on it? Was the plug ever replaced? Did you see it work ok before you got it?

Are you using any extension cord? Is there anything else running on that circuit?

Can you post a pic of the motor data plate and any wiring?

Did it always smoke like that? (WEG)
 
#9 · (Edited by Moderator)
Looks like the windings are in parallel (110v).

You didn't say if the motor spins freely.

Yes, most motors have two 110v windings. They are wired in series for 220v and parallel for 110v. The red and yellow wires should be one end of each winding. The white is the "center tap" of the two windings. The black wire connects to both red and yellow windings suggesting parallel (110v) wiring. For series (220v) wiring I would expect the red and yellow connected to white and the black. The white going to the motor would be capped.
 
#12 · (Edited by Moderator)
I just tried it again. And cross cuts are no problem, But it doesn't like to rip the driest 2x stock
Doesn't seam right to me.
Get rid of your crosscut (60t) blade and put on a rip (24t) blade. Or get a good general purpose blade if you will be doing lots of both.

Cheers,
Brad
 
#13 ·
I'm not sure it's wired correctly. It's just how I got it. And I've spent a ton of time trying to find the proper wiring set up.

Where is the run compositor? And how would I check it?

Thank you all for trying to help me. I'm in Nova Scotia and I don't really know anyone around here that could help me
 
#14 ·
Yeah, it sounds like a blade issue and not a motor issue.

The wiring looks right for 110v operation.

If both the motor and blade turn ok separately and based on what you say it sounds like the drivetrain is ok.

A 60T blade is really for short goods and not ripping. You can crosscut with it because the cut length is so short. Put a good combo blade on it and cut most anything.