ALL my Doosan CNC Lathes! | The Good, The Bad, & The MAINTENANCE

I’ve gotten a lot of questions about all our Doosan Lathes. Today I’ll recap how all the Doosan CNC Lathes have been performing in our shop!

So over the years, I've put out lots of videos about all of our machines, but I still keep getting questions about our Doosan lathes. So in this video, I'm going to summarize each one of my experiences with my Doosan Lynx 220L, Doosan Lynx 220LSY, Doosan Puma MX2100 ST, & Doosan Puma 2600SY II over the years. I’ll cover the good bad and the maintenance issues that sometimes turned ugly.
---------------------------------------------------------
Follow Pierson Workholding!
---------------------------------------------------------
**Videos We Recommend**

Fixture Friday Series:
THIS is the playlist to watch if you want to learn about designing fixtures.

00:00 Introduction to my Doosan CNC Lathes
00:30 Why did I get my first Doosan Lathe?
01:07 Doosan Lynx 220L
03:27 Doosan Lynx 220LSY
07:14 Doosan Puma MX2100 ST
09:45 Doosan Puma 2600SY II
13:40 Doosan Lathe Maintenance & Reliability
#Doosan #CNCLathes #DoosanLathes

[scottwatrous]

I gotta say, while there's a lot to be said for "printing money" and all that with a live tooling sub-spindle "Y-Axis Type" lathe: that assumes a fairly stable product line that's ready to roll. For someone starting out with a brand new product, starting new prints and such from scratch, the budget for even a basic live tool lathe is about equal to a solid little 2-axis lathe and a solid little vertical mill. And the versatility of the two machines is easy to grasp and really hard to beat unless you have a very well defined little mostly turned product like a pen or valve.

Sure, in time when your product is locked in and you know what kind of revenue your products can bring in, then you can figure out just how fancy of a multi-axis beast you can budget for once you figure out how much money you can reasonably print.

But yeah especially with all of the little issues that come with smaller live tool lathes, puts me off recommending one right away for most startups.

That said, there's so many parts that are just way easier to make when you have a sub-spindle so that aspect is definitely valuable even early on. But the extra shop time for adding a few holes or slots to a turned part on a mill is probably not a major bottleneck for a startup's cashflow. At least not one worth sinking so much capital into early on.

[bcbloc]

Good to hear solid honest reviews of the machines and what you like and don't like.

[AkSinMedia]

I really couldn't agree more with having the support network for a machine. At a previous employer I was running Nakamura Tome's which I would argue is a very competitive machine for what we produced and they were awesome when they were up. However when problems came around that required parts the lack of parts and technician availability in my area tended to cause several disruptions.

[Vankel]

That pucker factor on lathe with live tooling is no joke. I have a ST20ssy with the larger turret ( 24 tools) it does help out. The QG-65 Royal collet system is a must.

[Techno]

Oh man, love our Doosan Puma 2600 at work. Such an amazing job shopping machine with the accuracy and rigidity. A common part we do is hollow rollers from 220mm solid bar 4340, just pushes a 50mm U-drill through like its nothing then later we hard turn after heat treatment with 10 micron tolerance. Funny enough we also have a really old Daewoo Puma which is pretty cool.

[ipadize]

7:29 as i learned recently, the spindle on the right is called a counter spindle if it has the same power as the main spindle :)

[ShortActionCustoms]

We have new Doosan lathes, 2020 and newer. I love the Lynx 2100 LSYB because it is super quick, makes great parts and holds tolerances. With the Puma 2600 SY-2. Great machine, very solid but the box way gives little clearance for sub spindle facing tools like drills. We have bent a few Sumocham drills on the Box Ways if the Y axis isn't homed out all the way before rotating the turret. So yes, the BMT-65 tooling gives you more room, the box ways make it pretty tight with sub side tooling on the Y axis.

[pcsmachineworks]

As a high mix job shop owner, my advice to anyone contemplating the choice between a lynx or a puma, hands down go with the puma if you can fit it in your shop and wallet. I had purchased a lynx 220 and puma 2600 at the same time and the 2 machines sat side by side. My original thought was to push smaller parts to the lynx, but over time it was evident that the puma was far superior in many aspects. The vibration dampening alone of the larger mass and box ways allowed for odd parts that couldn't always be vetted out to run more smoothly and accurately than the lynx if feeds and speeds where a little off. The lynx was not very forgiving when it came to issues like chatter and flex in some of the parts we see. After a year, the spindle hour counter showed the obvious, and I traded it for another puma. It was an expensive lesson to learn, and if the 2 weren't side by side we would have never noticed. buy once cry once.

[robert_arrow]

Great video, thank you for the comparison. I am wondering how do you produce the parts out of the though material when using the bar feeder overnight. I believe the durability of the inserts / live tools would't be that long on though materials (?!)

[richhuntsd]

Nice Video Jay. Thank You so much for sharing Your thoughts and insights. I can’t get over how beautiful your floor is. Just curious. Is that Grey or White? How about an update on Your New Haas EC 400

[TheWidgetWorks]

Yeah, I've told many people before that local support is probably the most important part of a machine purchase. I have made many machine tool parts for some local companies (there is some on my desk right that I need to revise engineer to make replacements) because they can't get them and they just don't have the time or skill set available to make them. Some of them are from some pretty large brands even. It probably would get there nicker in a knot if they new I was making parts for there very high end, very expensive machines on a lowly old haas because they can't delivery them ;)

[TrPrecisionMachining]

good video Mr.Pierson, , thanks for your time

[MikeYurbasovich]

Ellison is the best machine tool support team in the Midwest, not sure how they do in other regions.
They stock parts, they stock machines, and they have excellent technicians and support people who make a really big difference in the machining game. Other companies have more sophisticated machine tool offerings, but their support is horrific. Some big three letter words are often followed with four letter words in my department. We have probably 200 machine tools, and nearly every new purchase in the past five years or so has been a Doosan for that reason. We are finally pushing out two Puma 550's after about 30 years of service.

[spruce]

Your shop is very clean and organized! There are a lot of shops out there that are grease pits.

[zyndapp]

Very nice video with great overview. I will buy several machines based on it, thanks!

[teekteekteekteek]

Thank you for this awesome video!
One question, why did you get rid off your haas lathe with bar feeder?

[Orakwan]

Here I sit with a Puma GT2600LM. Live tooling with no Y-axis. Milling is very accurate, but poor rigidity and surface finish. For drilling and doing simple stuff it's ok but complex milling is a nightmare. But, as a turning machine, it's golden. Everything is rigid, powerful. The tailstock spot on for 5 years. High speed, low speed, power everywhere. Very quiet. Chuck rigidity forgiving for bad setups. It just has that little extra milling for hexagons and whatever, with C axis. Not sure why it even exists without Y axis

[perceive]

How about the new Tornos MultiSwiss 8x26 😮 first thing comes to mind what kind of deal would you have to make with the devil to get one😅 I think Titan has one. Great video presentation info!

[motivemachineworks]

what happened to your haas lathe with the loud spindle?

[tj]

What tool holding do you use with your Lynx. I find that it takes such a long time to change tools on those BMTs.