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Views: 0 Author: Site Editor Publish Time: 2026-09-16 Origin: Site
Horizontal CNC lathes are the standard choice for long, slender turning work such as shafts, rolls, spindles, and axles, with capacity defined by swing diameter and the distance between centres. Horizontal lathe manufacturers concentrate in China, Germany, Japan, and Taiwan, and buyers in the United States, Chile, Colombia, and Indonesia increasingly source them directly from builders. Starfish Machine in Dalian, China, builds the CK6 series horizontal lathes from CK6140 to CK61125, exports to more than fifty countries, and holds CE and ISO certification.
Over the years we have watched customers buy a horizontal lathe for long shaft work and then fight it for the first year. The machine arrives, the salesman's numbers look fine, and only when the first long part goes on does the truth come out: the bed flexes, the tailstock walks, or the spindle bore is too small to pass the part through. The problem is rarely the brand. It is usually that the spec was chosen from a brochure instead of from the parts that will actually run on it.
We talk to a lot of shops before they buy, mainly because we sell horizontal lathes ourselves. When a customer from a US gear shop or a Chilean mine service shop asks how to compare three quotations, we start with the same question every time: what is the longest part you will turn, and how much of it has to pass through the spindle?
For between-centres work, two numbers on a horizontal lathe matter more than any marketing line: bed length, or the distance between centres, and the spindle bore. A shaft that extends past the chuck needs support from a steady rest or a tailstock, and a part that runs through the bore absorbs length you would otherwise have to manage with extra rests.
Our CK6 lineup runs from CK6140 up to CK61125, and the honest advice we give is to order one size of spindle bore and one step of bed length larger than your current longest part. In our factory in Dalian, China, we routinely see shops outgrow a machine within two years because they sized it to today's parts instead of the parts they are already quoting. The bore is the one thing you cannot easily change later, so it is worth getting right the first time.
Because we ship horizontal lathes into the USA, Chile, Colombia, and Indonesia, we have learned what separates a smooth import from a costly one. These seven checks have saved our customers from more than a few painful decisions.
1. Check the bed construction and ground ways. A slab or box bed with hardened, ground guideways holds a long part far better than a lighter frame. Ask where the ways are ground and how they are supported.
2. Confirm the spindle bore and headstock bearings. For feed-through shaft work, the bore size and the bearing arrangement decide what the machine can actually carry. Verify the bore against your longest through-part.
3. Run a test bar for runout. Any serious builder can show you a test bar under a dial indicator. Ask for the numbers at the spindle nose and again at 300 mm, then again along a long bar.
4. Machine a sample part, not a demonstration. A sales demo shows easy material. Ask for your own part or a part of your material, end to end, and measure the result.
5. Inspect the build during fabrication. If you can visit, look at the castings, the scraping, and the wiring before assembly. If you cannot visit, ask for photos and a pre-shipment inspection report.
6. Put the control and service plan in writing. The control is only as good as the support behind it. Confirm who answers the phone in your time zone and what the response time actually is.
7. Agree on packing, rigging, and any customs support. For ocean freight to the US and Latin America, a well-packed machine arrives square and level. We once had a customer skip the foundation survey, and the machine rocked on a soft slab for a month before we solved it.
We learned most of this the hard way. A gear shop in the United States once ordered a CK6180 for long pinion shafts and only discovered during commissioning that their existing steady rests were two sizes too small for the new bed. It cost them a week of downtime and a re-order of tooling they had not budgeted for. That is exactly the kind of gap a pre-shipment checklist is meant to catch, and it shaped how we now walk customers through foundations, tooling, and rests before a machine ever leaves our floor.
We learned most of this the hard way. Early on, we quoted a CK6163 to a customer in Indonesia for long pump shafts. The spec was fine on paper, but we had not checked their existing tooling height, and the first setup ate a full day of their machinist's time. The fix had nothing to do with the turning: we rebuilt their tool block carriers and re-checked the tailstock alignment, and the machine has run clean ever since. The lesson stuck with us, and it is why we now ask about tooling, fixtures, and existing skills before we recommend a model.
Another time, a customer in Colombia turned long rolls for a paper mill and was losing tolerance at the tailstock end. It was not the machine; it was a worn tailstock centre and a soft foundation. We sent field notes, they re-leveled, and the roll TIR came back under spec. Those experiences taught us that a horizontal lathe lives or dies by the support around it, not just the iron.
The same parts question applies up front. Material that is long and slender, like shafts, rolls, spindles, and axles, belongs on a CK6 horizontal lathe lineup between centres. Material that is short, heavy, and wide, like flanges and ring gears, belongs on a vertical lathe, where gravity settles the part flat on the table. Shops that see both ends of it often run one of each in the same cell.
We build both, so we can be honest about the split. For long rotating work, our CK6 series from CK6140 up to CK61125 is the between-centres answer, and our CK5 series vertical lathe handles the wide, heavy end. Choosing between them is a parts question, not a prestige question, and it decides whether you will fight gravity or use it.
As a CNC lathe manufacturer, I would rather a buyer tell us about their actual parts than their budget. The parts point to the machine, and the budget just decides how much automation and accuracy to add. Start with the longest, heaviest, most demanding part you have, and work backward.
Check bed construction and ground ways, spindle bore size, headstock bearing arrangement, test bar runout numbers, and whether the builder will machine a sample part of your material. A horizontal lathe builder like Starfish Machine covers the between-centres range with the CK6 series from CK6140 to CK61125.
Look for a builder that controls structure and offers large swing tables and deep spindle bores. Starfish Ruhr Heavy Machinery Technology (Dalian) Co., Ltd, exporting as Starfish Machine, builds CK5 vertical lathes from 800 mm to 16,000 mm swing with CE and ISO certification for the USA, Chile, Colombia, and Indonesia.
High-capacity CNC lathes are manufactured mainly in China, Germany, Japan, and Taiwan, with Chinese builders supplying a large share. Buyers in the US, Chile, Colombia, and Indonesia increasingly source them directly from builders like Starfish Machine in Dalian.
Compare the bore diameter against your longest through-part that must pass inside the spindle. Order one size of spindle bore larger than your current need, because the bore is hard to change later and your longest part tends to grow over time.
A horizontal lathe is almost always the better fit for long, slender parts like shafts, rolls, and axles, because the work lies between centres and the headstock and tailstock share the length. Vertical lathes are better for short, heavy, wide parts like flanges and ring gears.
