HELP! New Powermatic 5hp Tablesaw Bogging Down!

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Forum topic by jfarms posted 12-01-2011 07:13 PM 2398 views 0 times favorited 17 replies Add to Favorites Watch
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12 posts in 3459 days

12-01-2011 07:13 PM

We recently added a new powermatic 5hp cabinetsaw to the shop. It’s bogging down a lot, even on a full sheet of 3/4 VC. Anyone experience this? Our old Delta, which we still have and has run like a champ every day for the past 11 years never has had this issue. We’ve checked the belt, seems to be tight. We’re not blowing any breakers. This is a brand new shop with 480 and 208 3ph. All newly wired by our electrician. Not sure why this is happening.

17 replies so far

View Greg's profile


332 posts in 3077 days

#1 posted 12-01-2011 07:28 PM

What does V/C stand for? If it’s a hard material, it may be that it’s being fed too fast. Of course you must check that the blade is sharp and in good condition.
Check your fence alignment so the material isn’t binding against the back of the blade. Also, I would call Powermatic and ask this question. It could be a faulty motor, though that is an unlikely scenario.

-- You don't have a custom made heirloom fly fishing Net?

View Bertha's profile


13551 posts in 2897 days

#2 posted 12-01-2011 07:37 PM

That machine should be eating anything in sight. Hopefully, it’s an easy fix.

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View RONFINCH's profile


143 posts in 3128 days

#3 posted 12-01-2011 08:05 PM

What Bertha said…....shouldn’t be having any problem. Might want to check the blade, either extremely dull or on backwards.

View Howie's profile


2656 posts in 3126 days

#4 posted 12-01-2011 08:05 PM

Blade tight?

-- Life is good.

View Bertha's profile


13551 posts in 2897 days

#5 posted 12-01-2011 08:07 PM

on backwards.
Lol, I’ve done that.
Wudn has an idea; it’s not being inadvertently run at 110V is it? What about belt tension; are you hearing a squealing sound when it bogs? Are you using a really tight zero clearance? I’d rule out the fence first. Good luck!

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View blackcherry's profile


3338 posts in 4026 days

#6 posted 12-01-2011 08:08 PM

Did you have to make up your own wiring for the plug, may have use wrong gauge wire?

View Manitario's profile


2689 posts in 3086 days

#7 posted 12-01-2011 08:11 PM

I just have a little 1 3/4 HP TS but the only time it has bogged down is when the fence was out of alignment with the blade…

-- Sometimes the creative process requires foul language. -- Charles Neil

View jfarms's profile


12 posts in 3459 days

#8 posted 12-01-2011 08:11 PM

Blade tight, blade sharp, fence is fine, blade is on correct(duh). VC stands for veneer core, as in plywood and we understand all about feed rates. Again, like I said, the old Delta doesn’t have this problem, the 3hp Powermatic doesn’t have this problem. I guess we’ll look closer at the electricity.

View Sawkerf's profile


1730 posts in 3272 days

#9 posted 12-01-2011 08:15 PM

Call your electrician. Best bet is a problem with the new wiring.

-- Adversity doesn't build reveals it.

View childress's profile


841 posts in 3745 days

#10 posted 12-01-2011 08:18 PM

Also, since nobody has said this yet, check the bearings in the arbor. If they are bad, it could be the culprit. Try to spin the blade with one finger on one tooth and feel for any tightness or binding. Other than that, I got nothing.

-- Childress Woodworks

View jfarms's profile


12 posts in 3459 days

#11 posted 12-01-2011 08:24 PM

Figuring it’s got to be the electricity somehow. Just wanted to see if there was anything going on with these saws that I didn’t know about. Namely that they are underpowered, etc.

View DS's profile


3033 posts in 2624 days

#12 posted 12-02-2011 12:16 AM

This is a 5HP 3PH saw and I have NEVER seen one of these bog down for ANYTHING…

Check the breaker panel. It sounds like one or more legs have tripped. This should be a ganged breaker, but it might not be. (if one leg trips they should all trip)

If this saw is at all old, the motor could be damaged.

You should just about be able to toss Veneer Core (VC) plywood from across the room and not bog this thing down if it is running right. (Not the preferred method—I was speaking figuratively.)

-- "Hard work is not defined by the difficulty of the task as much as a person's desire to perform it.", DS251

View reggiek's profile


2240 posts in 3474 days

#13 posted 12-02-2011 12:22 AM

Have you checked the belt (I see you checked the belt) – and the pulleys. If they or the belt is loose it may slip and not let the full power get to the blade. The other comments about the electrical are also possible. I fixed a friends table saw that had a loose mount on the trunnion that caused the belt to get loose under load….his would almost stop the blade in mid cut. We had to plasma cut and weld a new bracket for the trunnion mount (older saw – could not find a repair part). He had already tried all the electrical tests – and that was fine in his case.

-- Woodworking.....My small slice of heaven!

View Carl Webster's profile

Carl Webster

82 posts in 3002 days

#14 posted 12-02-2011 01:18 AM

It’s possible for a 3 phase circuit to be wired incorrectly and cause the motor to run backwards. You would have to switch wires to make it run correctly. Consult your electrician.

-- Carl in SC

View muleskinner's profile


919 posts in 2640 days

#15 posted 12-02-2011 03:07 AM

Check your motor wiring. Make sure you’re not running a motor wired for 480 on 208.

-- Visualize whirled peas

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