Short answer: DN Solutions is the same company as Doosan Machine Tools. The machine tool business was acquired by DTR Automotive, now DN Automotive, and renamed DN Solutions in 2022. The machines and the model families did not change in the rename.
If you are shopping for a used Korean-built machining center or turning center, you have probably run into several names on the same class of machine: Daewoo, Doosan, Doosan Machine Tools, DN Solutions. They are not competitors. They are one company that has been renamed three times, and the machines themselves carried straight through each rename.
That matters for a practical reason: the machine does not change when the company is renamed. A DNM-series vertical machining center is the same machine whether its builder's plate reads Doosan Machine Tools or DN Solutions. Sellers list machines under whichever name was current when the machine was built, so a search using only one of the names misses listings under the other.
Why does one machine tool company have four different names?
The company started as the machine tool division of Daewoo Heavy Industries, building its first machine tool factory in Changwon, South Korea in 1976. Its first independently developed CNC lathe, the PUMA 10, came in 1980. Every rename since has been a corporate event, not a product event.
| Name | In use from | What happened |
|---|---|---|
| Daewoo Heavy Industries (machine tool division) | 1976 | Founded as a division of Daewoo Heavy Industries in Changwon, Korea |
| Doosan Infracore | 2005 | Renamed as the parent group rebranded |
| Doosan Machine Tools Co., Ltd. | 2016 | Spun out as an independent corporation |
| DN Solutions Co., Ltd. | 2022 | Renamed after acquisition by DTR Automotive, now DN Automotive |
The most recent change is the one that catches buyers out. In 2022 the machine tool business was acquired by DTR Automotive, a Korean manufacturer of vibration-damping components, which later became DN Automotive. The machine tool company was renamed DN Solutions that same year.
The business has kept expanding since. DN Solutions opened a Mexican subsidiary in 2023, a European R&D company and a Vietnamese subsidiary in 2024, and technical centers in Chicago and Mexico in 2025. In January 2026 it completed the acquisition of HELLER, the German machine tool builder, which now operates as a wholly owned subsidiary.
So if you are reading a spec sheet from any point in the last twenty years, you may be reading about this exact company under a different name.
Does a rename change the machine you are buying?
No. A rename changes the nameplate, the invoice, and the name the seller types into a listing. It does not change the castings, the spindle, the control, or the geometry.
Three things do change, and they are worth thinking about:
Who you call. Parts and service now route through DN Solutions and its distribution network, not through the old Doosan organisation. If you are buying from a dealer who has been sitting on a machine for a while, ask directly who they source parts from and whether they have an existing DN Solutions service relationship.
What you search for. Because the same machine line appears under both names, searching one term misses listings under the other. Search the model number, not the brand, and search it with both brand names attached.
What the paperwork says. The bill of sale, the customs declaration and the machine's own documentation may name any of the four historical names. For import and registration purposes this is normally fine, but expect the paper trail to be inconsistent and do not read it as a red flag.
Which model lines carried over from Doosan to DN Solutions?
All of the main ones. The current DN Solutions product line-up still uses the same model families that were sold under the Doosan names, including:
| Model family | Current DN Solutions range | What it is |
|---|---|---|
| DNM | DNM series, DNM 4th, DNM 5AX | Vertical machining centers |
| Mynx | Mynx II series | Vertical machining centers |
| PUMA | PUMA 2100/2600/3100, PUMA 4100/5100, PUMA 600/700/800 II, PUMA 1000 | Turning centers |
| Lynx | Lynx 210/220/300, Lynx 2100/2600 | Turning centers |
| NHC / NHP / NHM | HC II, NHC, NHP, NHP 2nd, NHM | Horizontal machining centers |
| DBC | DBC series | Boring mills |
| DBM / DCM / BM | BM, DBM-s, DBM, DCM F, BM U, DBM U, DCM U | Double column machining centers |
The practical consequence: the family carries over, but the individual model designation does not. Doosan's current DNM series is catalogued as DNM 4500, 5700, 6700 and 6700L/XL. Older machines of the same size class are badged DNM 5705 and DNM 6705. The envelopes match: a DNM 5705 and a DNM 5700 both travel 1,050 × 570 × 510 mm on a 1,300 × 570 mm table, and a DNM 6705 and a DNM 6700 both travel 1,300 × 670 × 625 mm on a 1,500 × 670 mm table.
So the series name tells you which family you are looking at, and the trailing digits tell you which generation and which production base. Do not assume a machine is current just because the family name still appears in the catalogue, and do not assume it is obsolete just because the exact designation is no longer listed. Confirm the travels, the table size, the spindle specification and the control on the specific unit.
The same caution applies across the other families. Model names within a series are reused across generations, and the DNM line now includes a fourth-generation range, so a machine sold simply as a "DNM" could belong to any of several generations with meaningfully different specifications.
How do you tell which generation a used machine belongs to?
Ask the seller for photographs of the machine's identification plate and the control pendant, and check three things:
The name on the builder's plate. This tells you which corporate era the machine was built in. A plate reading Daewoo is the oldest generation, Doosan Infracore comes next, then Doosan Machine Tools, then DN Solutions.
The control model and version. The CNC control is the single most important factor in how usable and serviceable a used machine will be, and it is also the most reliable indicator of the machine's generation. FANUC-based controls are the norm across these machines, but the specific model and edition vary widely. On one of the Mynx machines in this class, for example, the control is a DOOSAN-FANUC i Series; the DBC 130 horizontal boring mill in the same family runs FANUC 31i. Confirm the exact control model in writing.
The spindle specification. Spindle speed, taper and power differ between machines that share a series name. A vertical machining center in this family may be specified at 6,000 rpm, 8,000 rpm or 12,000 rpm depending on how it was ordered, and the taper may differ accordingly. The spindle configuration tells you far more about what the machine can actually do than the series badge does.
Is "Doosan" even one company?
No, and this is where searches go wrong. The name "Doosan" is still used today by an entirely separate Korean group whose businesses include Doosan Enerbility, Doosan Bobcat and Doosan Robotics. None of them make machine tools.
The machine tool business left that group and is now DN Solutions, owned by DN Automotive. So a generic search for "Doosan equipment" will surface excavators, forklifts, power generation equipment and construction machinery alongside machining centers, and the same word appears in the names of several unrelated companies.
If you are looking specifically for machine tools, search on the model number plus "CNC" or "machining center" rather than on the brand name alone.
What do Doosan and DN Solutions machines cost on the used market?
Used prices for this family track the specification far more than the badge. A compact three-axis vertical machining center with modest travels sits in a completely different price band from a large horizontal boring mill with a 130 mm spindle.
Machines of this family currently carry published reference prices across a very wide range. Representative examples of the model lines listed above include:
| Model line | Type | Key specification | Reference price |
|---|---|---|---|
| DNM 5705 | 3-axis VMC | 1,050 × 570 × 510 mm travel; 8,000 rpm; 24-tool magazine | $35,000 |
| DNM 6705 | 3-axis VMC | 1,300 × 670 × 625 mm travel; 8,000 rpm standard | $45,000 |
| Mynx 5400/50 | 3-axis VMC | 1,020 × 540 × 530 mm travel; 6,000 rpm; DOOSAN-FANUC i Series control | $85,000 |
| PUMA 800XLM | Mill-turn center | Heavy-duty turning with milling capability | $19,118 |
| DBC 130 | Horizontal boring mill | 3,000 × 2,000 × 1,600 mm travel; W-axis 700 mm; FANUC 31i; 40-tool ATC | $296,541 |
Used machine prices fluctuate with the market. The figures above are published reference prices and are not real-time quotes. Confirm current pricing and availability directly before making any decision.
Two things stand out in that spread. First, the distance between the smallest and largest machines is close to an order of magnitude, which is what you would expect when comparing a compact VMC against a large boring mill with a 43,000 kg installed weight. Second, the PUMA 800XLM figure sits well below what a heavy-duty mill-turn center would normally command, which is worth querying with the seller rather than treating as an opportunity.
What should you verify before buying a used Doosan or DN Solutions machine?
The rebrand question is ultimately a distraction from the questions that actually determine whether a used machine is a good purchase. Work through these instead:
Control model, edition and available support. Get the exact control model and software edition in writing. Then confirm independently that the control is still supported and that diagnostics and replacement boards are obtainable in your region. An obsolete control can cost more to keep running than the machine cost to buy.
Spindle and axis condition. Ask for a spindle run-out measurement, a taper contact check and a laser interferometer report on positioning accuracy. These are standard checks on machines of this class and a seller who cannot produce them should be treated as a signal.
Geometric accuracy under load. Static geometry checks at the dealer are not the same as cutting a test part. Where possible, ask for a test cut and inspect the result.
Parts path for the specific generation. Because the model family spans a rename, confirm with DN Solutions or its distributors which parts are still stocked for the specific generation you are considering, and which are made to order.
Tooling ecosystem. Confirm the taper and the tool-holder standard so you can cost the tooling you will need. A 24-tool magazine with a common taper is straightforward; a less common configuration can add significant cost.
So which name should you search for?
Daewoo, Doosan Infracore, Doosan Machine Tools and DN Solutions are four names for one continuous machine tool business. The machines did not change when the company was renamed, and the model families — DNM, Mynx, PUMA, Lynx, NHC, NHP, DBC — carried through intact.
Buy on the specification and the condition, search the model number rather than the brand, and confirm the control and spindle configuration in writing before you commit.
Machines in this family currently listed on UsedUltra:
- Used Doosan DNM 5705 CNC Vertical Machining Center
- Used Doosan DNM 6705 VMC for Sale
- Used Doosan Mynx 5400/50 CNC VMC
- Used Doosan PUMA 800XLM Heavy-Duty CNC Mill-Turn Center
- Used Doosan DBC 130 CNC Horizontal Boring Mill
- All Doosan machines listed on UsedUltra
Sources
- DN Solutions corporate history — renaming and expansion timeline
- DN Solutions product line-up — current model families
- Doosan DNM series catalogue (PDF) — current DNM model range, travels and table sizes
- DN Solutions completes acquisition of HELLER — trade press
- DN Solutions Acquires Heller — trade press
- DN Solutions — Wikipedia — ownership history
- Doosan Group — the separate group that still uses the Doosan name
Used machine prices fluctuate with the market. Prices shown in this article are published reference prices and are not real-time quotes. Specifications vary between individually ordered machines and must be confirmed for the specific unit.