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  #1  
Old 06-30-2005, 09:32 PM
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Default Carbon Brushes -- need source.

Franz, Pile Buck, JT, Scott V et al,

I am going to build my own welding positioner, a smaller bench top one. I have a DC gear motor with variable speed drive, and the remaining materials including some copper plate to make one. However I can't find HD carbon brushes. Where is a good source? The one's in McMaster-Carr look too light duty for welding.

TIA,
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Old 06-30-2005, 10:21 PM
JTMcC. JTMcC. is offline
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"Thomas Register" is the first place to look for that kind of thing imo.

For my homegrown stuff, I always look at the price/availability of the store bought parts as most manufacturers sell replacable components. And they've done your engineering and capacity rating type work for you. So I'd go to the positioner manufacturers and see if they sell brush assemblies.


JTMcC.
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Old 06-30-2005, 10:25 PM
Franz Franz is offline
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If I don't have em in my barn, they're in Gus Sim's barn.
How big are you looking for? I think we should have either ½ or 3/4 x 2 someplace in the inventory.
Pete might have some over in Postenskil too, I didn't watch what he carried off from Alvinar.
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Old 06-30-2005, 11:19 PM
david_r david_r is offline
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Ron,
You might want to try these guys. This is where a motor shop in the LA area sends a motor they can't handle.
http://www.eurtonelectric.com/parts_brushes.html
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  #5  
Old 07-01-2005, 12:19 AM
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Quote:
Originally Posted by Franz
If I don't have em in my barn, they're in Gus Sim's barn.
How big are you looking for? I think we should have either ½ or 3/4 x 2 someplace in the inventory.
Pete might have some over in Postenskil too, I didn't watch what he carried off from Alvinar.
physical size no clue, 300 amps would be nice, I figured I would need several to handle the load.
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  #6  
Old 07-01-2005, 07:15 AM
stovepoker stovepoker is offline
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Try Helwig Carbon, Shade. I forgot their number, but they have a website.
I have deat with these guys nd they would be my first choice.
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  #7  
Old 07-01-2005, 01:17 PM
stock z/28 stock z/28 is offline
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Hi,

I am probably missing the the point, but if you are building this, couldnt you just use some large diameter carbon electrodes? I dont use many of these but I think they are available in pretty large sizes.

A good friend of mine goes through a ton of them in old searh lights that he restores and rents out. They are pretty large in diamater as well as very long. Those old search lights are a pretty neat machine, a lot of parts.
He does a beautifull job on the restoration, they look brand new.

Good luck

Jeff
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  #8  
Old 07-01-2005, 04:19 PM
Franz Franz is offline
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OK Shady, I found the biggest we have in stock in Hilton are 3/8 x 1¼ x 2" long. All measurements are ±my eyeball unaided by glasses.
I have 8 of them and can box them up & ship if you need them.
We have bigger, probably in the Pa warehouse, but I haven't checked yet.
4 of these brushes under your table should carry 400 amps easily.
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  #9  
Old 07-01-2005, 05:18 PM
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Quote:
Originally Posted by Franz
OK Shady, I found the biggest we have in stock in Hilton are 3/8 x 1¼ x 2" long. All measurements are ±my eyeball unaided by glasses.
I have 8 of them and can box them up & ship if you need them.
We have bigger, probably in the Pa warehouse, but I haven't checked yet.
4 of these brushes under your table should carry 400 amps easily.
Thanks ship 'em!!!
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  #10  
Old 07-02-2005, 02:49 PM
DaveD DaveD is offline
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Found this with a google search
http://www.advancecarbon.com/index.html
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