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Air or Electric?

Posted March 25, 2010 7:49 AM

Open almost any manufacturing trade book and you will find an article detailing why electromechanical actuation is preferable to pneumatic actuation. Invariably, such reports cite higher operating efficiencies, lower running costs, and more simple control. But what about PID controllers or embedded magnetostrictive sensors? Have advances in pneumatic technology offset claims of superiority for electromechanical actuation?

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Guru

Join Date: Aug 2006
Posts: 4484
Good Answers: 246
#1

Re: Air or Electric?

03/26/2010 1:47 AM

No.

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Guru

Join Date: Oct 2007
Location: Tulare, CA
Posts: 1783
Good Answers: 35
#2

Re: Air or Electric?

03/26/2010 9:36 AM

We've made efforts to replace our hydrolic systems with electrical, however we still use pneumatics for much of our machinery operations.

I really don't see where there's a savings running wire and conduit everywhere, when you can simply run some plastic tubing at a fraction of the cost of wire and you don't have to worry about insulating it from any data cables that might be passing through.

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Anonymous Poster
#3
In reply to #2

Re: Air or Electric?

03/27/2010 10:06 AM

You cite "higher operating efficiencies, lower running costs, and more simple control." Air is a very expensive commodity Much like DC power, we need to minimize its use because of the inefficiencies. It may well be necessary for various engineering reasons, but needs to be minimized. Air lines are constantly leaking. Plastice tubing and the "fraction of the cost" are all initial up-front costs. Upkeep will be expensive. Oil and water in the lines, filter changes, leaks, sticking actuators. Compressor costs. If you already have it, you should have a good handle on operating costs. Compare. I think you will realize reliabiltiy is where the future is. Embrace it.

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Guru

Join Date: Oct 2007
Location: Tulare, CA
Posts: 1783
Good Answers: 35
#4
In reply to #3

Re: Air or Electric?

03/28/2010 1:07 PM

We use a lot of pneumatics in our machinery. Our primary supplier is SMC. We have a lot of machinery that requires the use of pneumatic cylinders to open and close gates. I think it's the use of the cylinders everywhere that require us to use pneumatics.

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Anonymous Poster
#5

Re: Air or Electric?

04/09/2010 2:32 AM

We need to have air supply for pneumatic part, means an air compressor is needed. Some application such as pick and place that required more than 2 stopping positions, electromagnetic actuator is preferred as the control is more simpler. But the cost of electric actuator is higher.

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Anonymous Poster
#6

Re: Air or Electric?

04/13/2010 9:37 AM

Air is great, until, like us, you run out of capacity.

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Member

Join Date: Oct 2010
Location: Chennai
Posts: 8
#7

Re: Air or Electric?

10/27/2010 1:55 AM

Hello Sir,

Now the pneumatics field has been developed a lot. Now you can operate the pneumatics with the signal from the sensors. Electromechanical actuation is also possible. I can help you for further assistance.

Regards,

RAMARAJ.T

jsramraj@gmail.com

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