View Full Version : Linc. feeders
Can someone tell me the difference between a ln-7 and a ln-25 feeder? Thank you for your time.
LN-25 is a man-portable suitcase type wire feeder. LN-7 is a shop-type, on wheels.
so other than portability are the workings basically the same?
Well, they are both wire feeders that need outside power source.
I guess where I am going is there any advantage of the 25 over the 7 in a shop? Any more bells and whistles on the 25?
12-25-2005, 03:12 PM
The LN-25 is voltage sensing and it will work on both CC and CV power sources. I don't think the LN-7 will work on both. I think the LN-7 is only for CV power sources, so if you have a CC power source (idealarc, dialarc, any tig welder), the LN-7 will not work.
The LN-7 is also a 120v feeder. The LN-25 uses the power from the arc to run, so there is no outside power connections needed for the 25. If you are looking for maximum flexibility the LN-25 is probably the way to go. If you are mainly working with a single power source in your shop that has CV, the lower price one is likely best.
Does the have the contactor built in? The reason I'm asking these questions ia I found a 7 on ebay a while ago. Didn't pay that much for it, but you usually get what you pay for. Everyone talks about the 25 but not much is said about the 7. I've got a linc. Idealarc stick mach that is cc and cv and was going to try the feeder on it. I also have a Ranger GTX that is supposed to be multi process so I was going to clean up this feeder and try it out. It sounds like I should try to find a 25 if I am serious about wire. But hey why stop there why not the pm 350, sigh where does it end?
12-26-2005, 10:37 AM
The LN-7 is a perfectly nice machine. I think the contactor is an option on both feeders (but I am not sure), so it may or may not be there. If your idealarc is cv also, it should work fine. It should also work fine with the ranger. If it works, go with what'cha got. Here is a manual link for the older LN-7. I am not sure what you have, but maybe this will help. Further below is a bunch of links to lots of older lincoln equip.
12-26-2005, 11:29 PM
I've got an LN-25, and love it.... It is great for projects that my pm-300 won't reach..... Like a dump-truck box.. on a boat ..or thing of that nature. alot of things i used to stick weld, I can now just grab the 25, drag out the leads and go.. But, for some reason, I still prefer the pm-300, It's just that poratability becomes an issue... and it will also be an issue with a 7... so thats it, ones easily portable, one's not. Both are good. Hope it helps
I looked at my idealarc closer and guess I was mistaken, it's only cc so I guess my only option for trying it is the Ranger.
12-28-2005, 06:12 PM
Some of the idealarcs are cc and some are cv. I guess I forgot that...The made a bunch of different models of the idealarc, many more than the dialarc.
I have a couple of hobart cc/cv portable feeders (portawire & hefty). Portable is handy, and the cc/cv option gives a great deal of latitude when it comes to hooking to welders...but these two features seem to cost a good bit more than an similarly equiped non-portable non-cv/cc feeder. Remember, neither of these options will really affect the weld quality...only where and with what welder you can use it. Since you already have the 7, I'd get that one running with your cv welder and look into the ln-25 in the future. They are pretty high even in the used market...and seem to have risen in price over the last year on ebay. A year or so ago, you could pick up an ln-25 for $450-$550 used on ebay. I have yet to see one go for less than $600 recently. Go figure.
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