Author Topic: Vibration in cutting wheels  (Read 139 times)


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Vibration in cutting wheels
« on: May 17, 2017, 03:26:07 PM »
 Hi, I am not new to the game, but do have a problem... Brand new 8" Gemmasta cutting machine. Two new steel cutting wheels (very heavy) newly fixed up bench, NO MOVEMENT!
the machine doesnt appear to have any vibration when there are no wheels on, but, even with a couple of older, very light wheels, there is a slight vibration....and with my two heavy wheels, there is a definite bad vibration. Its not only annoying, but my saw moves, and buckets of opal fall off the shelf!!!!!!
Any suggestions?

Aussie Sapphire

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Re: Vibration in cutting wheels
« Reply #1 on: May 17, 2017, 03:57:24 PM »
Have you tried balancing the wheels? Sometimes adjusting the position of the wheels by rotating them slightly will make the machine run smooth.  If that does not help, you could check for runout on the shaft?

Others more knowledgeable on machinery will hopefully have some good suggestions for you.

As a new machine, I would also suggest contacting Gemmasta for setup advice - always better to report any issue to the supplier as they will normally want to assist in these types of situations.

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Re: Vibration in cutting wheels
« Reply #2 on: May 18, 2017, 07:32:08 AM »
Do you have the correct sleeves in the centre. The wheels need to be very snug on the shaft. Wheels usually come with an assortment of sleeves to make the hole in the wheel, usually 7/8" or 1" fit the shaft which is often often 3/4"or 5/8".

If you have a snug fit there check for runout sideways, this can be fixed by packing a piece of paper behind the flanges to even things up. just tear a bit of post it note and try it, thats usually all thats required, sometimes it might be necessary to double a piece, You can check where the high spot is by turning the machine on and lightly holding a pencil so the high spot touches the pencil, just lightly or you will have a mark all the way around.
Check your wheels first for any burrs or dirt under the flanges. It doesn't take much to throw the whole thing out of balance.


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