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Router plate vibration

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Forum topic by skiler posted 12-22-2014 10:11 PM 1027 views 0 times favorited 11 replies Add to Favorites Watch
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skiler

57 posts in 1421 days


12-22-2014 10:11 PM

Topic tags/keywords: router table router plate vibration

Got a Grizzly T10432 Router Table with Stand for Christmas. I put it together, got the phenolic mounting plate drilled and mounted my router. When I turned it on the plate vibrated so much that the leveling allen screws vibrated out of adjustment. The noise was horrendous. I’ve re-leveled the plate but as soon as I turn it on the vibration starts and the allen screws start moving. I’ve never has a stand alone router table with a plate like this so I am really in the dark on this. Any help would be appreciated.


11 replies so far

View firefighterontheside's profile

firefighterontheside

13506 posts in 1322 days


#1 posted 12-22-2014 10:35 PM

Are there not holes for screwing the plate down after you level it. I have my Rockler plate screwed down. The idea of a 3 1/4 HP router jumping out of the table is not pleasant. Does your router vibrate or run smoothly when out of the table. Do you have a bit in it and is there something wrong with it? Vibration of a router suggests that either the shaft is bent or the bit is bad or broken.

-- Bill M. "People change, walnut doesn't" by Gene.

View Bill White's profile

Bill White

4456 posts in 3426 days


#2 posted 12-22-2014 11:36 PM

My first thought is that the router itself has a prob. Tables won’t vibrate on their own.
Bill

-- bill@magraphics.us

View skiler's profile

skiler

57 posts in 1421 days


#3 posted 12-23-2014 12:37 PM

Bill and Bill, Thank you for your replies. The router seems to run smoothly out of the table. When in the table it sounds like it is going to jump out and chase me around the shop. There are no holes in the plate for hold down screws but I think I am going to make some. Once again thanks for your help.

View William's profile

William

9906 posts in 2308 days


#4 posted 12-23-2014 12:53 PM

I would not screw down the plate till the problem is pinpointed.
Something is definitely wrong if the router runs smoothly outside the table but vibrates badly in it.
Is something interfering with a moving part?
Turn the router upside down outside the table and run it to see what it acts like. Could be a bad bearing that only presents itself when the router itself is upside down such as in a table.

-- http://wddsrfinewoodworks.blogspot.com/

View Fred Hargis's profile

Fred Hargis

3945 posts in 1959 days


#5 posted 12-23-2014 01:36 PM

I agree with William, I wouldn’t do any screwing down until you figure out what the problem is. Does the insert fit snugly in the recess? You might try putting a caul across the insert and clamp it down snugly, then run it to see if that changes anything. I’m leaning toward something with the router being the problem.

-- Our village hasn't lost it's idiot, he was elected to congress.

View Tennessee's profile

Tennessee

2410 posts in 1980 days


#6 posted 12-23-2014 01:54 PM

If the router runs in hand-held mode without vibrating, and it vibrates horribly in the table, you have to assume something is changing the router when you mount it.

The only moving part when in the table is the router motor. So the only thing that could be changing the balance of the motor is the table changing maybe the frame of the router a bit? This would cause an off balance scenario.

I’m thinking the bottom of the plate is not level, or possibly the holes are not drilled correctly, causing a deflection of the frame of the router, and causing the motor to run in an unbalanced mode. For sure, you will tear out a bearing if you persist in running it in this table.

Something on the table is out of dimension.

-- Paul, Tennessee, http://www.tsunamiguitars.com

View bonesbr549's profile

bonesbr549

1176 posts in 2533 days


#7 posted 12-23-2014 02:59 PM

Try something else, remove the plate and mount the router without a bit or collet. Lower the router below the plate and invert and on a flat service turn it on and feel the router is not vibrating? If not, then add the collet only, and repeat. Something is throwing int out of balance. You could also check to see router shaft perpendicular to plate. Sounds interesting.

-- Sooner or later Liberals run out of other people's money.

View ClayandNancy's profile

ClayandNancy

511 posts in 2481 days


#8 posted 12-23-2014 03:26 PM

Sounds more like router. When you flip the router over your now changing where the weight of the armature is. Your loading the thrust part of each bearing in a different way depending on the orientation of the router.
Check the bearings.

View skiler's profile

skiler

57 posts in 1421 days


#9 posted 12-23-2014 10:20 PM

Thanks for all of your replies. I removed the collet and it was fine. Put the collet back on and it was fine. Put the roundover bit I had in it back and it went nuts again. I can’t see anything wrong with the bit but it’s got to be it. I put another roundover bit in it and it is fine. Thanks again for all the replies. I wish all LJs a blessed and merry Christmas.

View firefighterontheside's profile

firefighterontheside

13506 posts in 1322 days


#10 posted 12-24-2014 02:08 AM

Merry Christmas. Glad you found the problem.

-- Bill M. "People change, walnut doesn't" by Gene.

View William's profile

William

9906 posts in 2308 days


#11 posted 12-24-2014 11:35 AM

I’m glad you found it.
Routers turn at such high RPMs that the slightest unbalance is a great catastrophe in the making.

-- http://wddsrfinewoodworks.blogspot.com/

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