×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Aegis Shaft Grounding Ring

Aegis Shaft Grounding Ring

Aegis Shaft Grounding Ring

(OP)
Does anyone have any experience using this product instead of the carbon grounding brush?

http://www.est-aegis.com/

RE: Aegis Shaft Grounding Ring

I used them in an application with air handling units where the carbon dust released from brushes was not popular with the QA guys (a medical company). I have also used them in hotel ventilation motors. The reason here was that the manager didn't want a new maintenance item. That was some time ago, and they seem to perform well after a lot longer time than brushes do. Haven't reached the magic five year limit yet.

No bearing problems after they were installed. EDM dropped typically from a few thousand PPS at 200 V/us to a few hundred PPS at 50 V/us.

I would be a little cautious in heavily polluted areas. Especially if there is grease or oil. Not that I can say for sure that it would be a problem. But I would test thoroughly before installing on hundreds of motors.

In "clean" applications like AHUs and HVAC, I wouldn't hesitate to use them again.

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

RE: Aegis Shaft Grounding Ring

I have specified them on VFD controlled conveyors in rock crushing applications where the extreme dust and grit conditions precluded the use of brush type shaft grounding systems. The oldest one I know of for sure has been running about 4 years, haven't heard of any problems.

RE: Aegis Shaft Grounding Ring

Thanks for testing, Jeff! Sounds like a tough environment. Did you use any protective covers on them?

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

RE: Aegis Shaft Grounding Ring

(OP)
Thank you for your feedback.  My application will be on an ID fan for a baghouse in a steel mill.  Exposure to the weather will probably be the biggest concern.  
Thanks again,
Bill

RE: Aegis Shaft Grounding Ring

Bill,


Might be worth a look at the shaft grounding brushes from Sohre Turbomachinery. I'm keen on getting one of these on to a machine here for a trial but some members of the Flat Earth Society would die rather than carry out a trial which might prove them wrong. It might prove me wrong too, but I'm wrong often enough not to care too much. wink

These might be a little large for your installation, but I imagine a baghouse fan is a fair size anyway. Worth a look.

www.sohreturbo.com
 

----------------------------------
  
If we learn from our mistakes I'm getting a great education!

RE: Aegis Shaft Grounding Ring

Quote (Skogsgura):

Thanks for testing, Jeff! Sounds like a tough environment. Did you use any protective covers on them?
I would specify a cover over the entire motor to keep at least some of the dust from building up, but they never put them on; they were so used to changing motors every 6-9 months that they didn't want any restricted access (plus it cost more than $10). I'm pretty sure I have pictures of one on my home PC if you want to see.

RE: Aegis Shaft Grounding Ring

Want Want!

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources