Having trouble with your Festool power tool? Well, we're here to help you. Before posting to the forum, give us a chance to diagnose and resolve your issue. In the U.S. and Canada, call us toll-free at 888-337-8600 on Monday-Friday between 8a-5p EST or contact us via email at service@festoolusa.com. For other countries, please visit http://www.festool.com for contact information for your local Festool service department.

Author Topic: RO 125 is running hot and distributing bits of carbon  (Read 1203 times)

0 Members and 1 Guest are viewing this topic.

Offline daievans

  • Posts: 2
I just received a new Rotex 125 and within an hour it is running very hot and in the handle area and it appears to be distributing pieces of Carbon - are it's brushes shot already? I removed the small panels on the handle and it appears to have a lot of fine black dust in there ....

It was used for Rotex sanding for a little over an hour with Granat 40 - should be able to do that for hours i would hope?

Dealer will replace it, but is this unusual?

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Offline Dovetail65

  • Posts: 4592
    • Rose Farm Floor Medallions and Inlays
Re: RO 125 is running hot and distributing bits of carbon
« Reply #1 on: July 14, 2017, 08:22 PM »
Just keep using it.

They run hot and the black stuff will stop.
The one who says it can't be done should avoid interrupting the person doing it.

Offline daievans

  • Posts: 2
Re: RO 125 is running hot and distributing bits of carbon
« Reply #2 on: July 14, 2017, 10:47 PM »
It has now failed completely -  no life whatsoever ....
Annoying as we planned to use it on a project this coming week.

Offline Gregor

  • Posts: 429
Re: RO 125 is running hot and distributing bits of carbon
« Reply #3 on: July 15, 2017, 06:11 AM »
Take it to where you got it, get back your money (no questions asked) and pick up a fresh one.

Offline Alex

  • Posts: 5433
Re: RO 125 is running hot and distributing bits of carbon
« Reply #4 on: July 15, 2017, 11:07 AM »
Running hot in the beginning is normal - just the gears getting to know each other very well. It will get less eventually, but it will always be warm to the touch.

The black stuff - that's the pad break breaking in. A rubber collar on the inside of the sander around the pad to make sure it doesn't spin up uncontrollably when you life the sander from the workpiece. After a very short while this will be good too.

Sander quiting entirely - this is not within functional parameters - get a new one as suggested.