[Crw-talk] Vacuum chucking questions

[Ldsolem at aol.com]

I purchased my Gast pump from the Surplus Center in Nebraska a few years  
back and I do not remember what I paid but it was a lot less then $400  
dollars.
 
I would give the Surplus Center a call and ask them if they have the pump.  
1-800-488-3407.
 
Lyle  Solem
 
 
 
In a message dated 7/1/2012 2:19:41 P.M. Central Daylight Time,  
greg.haugen at ymail.com writes:

 
My opinions are below in your questions.


How satisfactory are the vacuum devices that run off an air  compressor?  
I'm told they are very loud.  Is a vacuum pump a better  direction to go?  
They are loud and I  just don't feel like their in the same league as a vacuum 
pump.

How reliable are used vacuum pumps?  I  see them on eBay for about $45 or 
so.  Used pumps can be as good but they are a  gamble.  What were the pumps 
used for prior and how well were they  cleaned after use?  There are many 
variables to consider.  They're  not bad but not always good either.


Are the pumps used by HVAC  technicians to draw the air out of air 
conditioning systems  satisfactory?  Depending on the size,  possibly.  Like the 
used pumps there are a lot of variables.


When it comes to pumps, Gast's model  0523 is the pump that is in the 
catalogs for $440.  It's the best of the  best.  There are parts available if the 
user does have problems.  If  you do a search on ebay for Gast 0523 Pump 
you'll find some options, again a  lot of variables.  IF you order one, expect 
shipping in the $30 to $40  range alone.  There is another pump available 
that has been getting some  good reviews and is half the price and is a "New" 
pump so there are no  questionable variables about useage.  Stubby Lathe 
USA carries it as well  as some adaptors (the adaptors are made of delrin and 
will need to be turned  down smaller to fit our lathes).  Here's a link to 
them.   http://stubbylatheusa.com/cgi-bin/onlinestore.py


Also there are many articles on Vacuums  around.  Some are overly 
complicated, in my opinion.  It doesn't  need to be.  Keep it simple.


This is just my 2 cents on the  subject.


Greg




 
  
____________________________________
 From: John & Donna Griffiths  <griff at mwt.net>
To:  crw-talk at crwoodturner.com 
Sent: Sunday, July 1, 2012 2:02  PM
Subject: [Crw-talk] Vacuum  chucking questions


Hello all, I have some  questions:

How satisfactory are the vacuum devices that run off an air  compressor?  
I'm told they are very loud.  Is a vacuum pump a better  direction to go?

How reliable are used vacuum pumps?  I see them  on eBay for about $45 or 
so.

Are the pumps used by HVAC technicians to  draw the air out of air 
conditioning systems  satisfactory?

John


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