Flat-Bed CNC Lathe CK6160
The next size up: 600 mm swing over the bed, higher spindle torque and GSK control for larger disc and shaft parts.
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Flat-Bed Turning Platform
Flat-Bed CNC Lathe CK6140
The CK6140 is the level-bed workhorse of the turning range: 400 mm of swing, up to 2 m between centres and a high-rigidity bed with a widened saddle. It turns cylinders, cones, arcs and end faces, and cuts metric and imperial single-start and multi-start threads — all on hardened and ground ways that keep geometry long after the first cut.
400 mmSwing over bed
2000 mmMax centre distance
52 mmSpindle bore
4 kWMain motor
Built Around Rigidity
A Level Bed That Holds Accuracy Under Load
The CK6140 is not a compromise between turning and something else. Its whole design is aimed at stable, accurate turning of shafts and disc parts, which is why the structure and the drive train are specified the way they are.
- High-rigidity bed, widened saddleThe bed casting and broadened saddle resist deflection during heavy and interrupted cuts.
- Hardened and ground guidewaysWear-resistant cast iron ways are hardened and ground so the geometry is held over years of production.
- High-precision rolling bearingsThe spindle runs in precision rolling bearings for high rotational accuracy and low noise.
- Ball screw transmissionThe precision turntable and slide axes are driven through ball screws, giving good dynamic response and accurate positioning.
- Tailstock supportA 65 mm quill on an MT4 taper with 130 mm of travel supports shafts along their full length.
Technical Data
CK6140 Specification
Every figure below comes from the machine datasheet. Optional items are marked and confirmed on the build sheet.
| Parameter | Specification |
|---|---|
| Max swing over bed | 400 mm |
| Max swing over cross slide | 210 mm |
| Centre distance | 750 / 1000 / 1500 / 2000 mm |
| Spindle bore | 52 mm (80 mm option) |
| Spindle taper | MT6 |
| Spindle nose | C6 |
| Spindle speed steps | Manual 2 steps (stepless option) |
| Spindle speed range | L 100–500 rpm / H 500–1800 rpm (option 90–1800) |
| Tool post | Electric 4-station |
| Tool size | 25 × 25 mm |
| X-axis travel | 230 mm |
| Z-axis travel | 750 / 1000 / 1500 / 2000 mm |
| X-axis rapid traverse | 6000 mm/min |
| Z-axis rapid traverse | 8000 mm/min |
| Tailstock quill diameter | 65 mm |
| Tailstock taper | MT4 |
| Tailstock quill travel | 130 mm |
| Main motor power | 4 kW |
| Coolant motor power | 0.09 kW |
| Net weight | 1700 / 1800 / 1900 / 2000 kg by centre distance |
| Overall dimensions | 2200–3500 × 1650 × 1700 mm by centre distance |
The source datasheet for the CK6140 lists the mechanical specification above; the CNC control is confirmed at order against the programs and operator skill level on site. Positioning and repeat positioning accuracy are verified by a geometric test on each machine before shipment rather than quoted as a single figure. Spindle bore, chuck, spindle speed form and bed length are all specified per order.
Machining Range
What the CK6140 Reaches
Read swing, travel and bore together. Swing sets the largest disc, travel sets the longest shaft, and bore sets the largest bar fed through the spindle.
| Envelope item | CK6140 | What it decides |
|---|---|---|
| Largest disc, over bed | 400 mm | Diameter of a flanged or disc part turned on the faceplate or chuck |
| Largest disc, over cross slide | 210 mm | Clearance for the tool to pass a larger diameter without fouling |
| Longest shaft, between centres | 750 to 2000 mm | Shaft length supported by the tailstock quill |
| Bar through the spindle | 52 mm (80 mm option) | Maximum bar stock fed through the spindle for continuous production |
| Tool cross travel | X 230 mm | Reach across the part for facing and diameter work |
| Tool longitudinal travel | Z 750 to 2000 mm | Length of cut in one program without repositioning |
Shaft Work
Long parts supported between centres, stepped diameters, tapers and threads cut in a single program along the Z travel.
Disc and Flange Work
Facing, boring and outside diameter turning on parts that sit inside the 400 mm swing and the 210 mm cross-slide clearance.
Core Strengths
Why the CK6140 Holds Its Geometry
Four published characteristics of the machine, and what each delivers over a working week.
Wear-Resistant Hardened Ways
The bed and saddle guideways are hardened and ground, which is what keeps machining accuracy stable over long production.
Stability Under Heavy Cuts
The design emphasises stability and rigidity so the machine stays composed during heavy and interrupted cutting.
High Surface Quality
Precision spindle bearings and ball screw drive combine to give high productivity, high accuracy and an excellent surface finish.
Full Contour Turning
Cylindrical, conical, arc and end-face profiles are all handled, along with standard and multi-start threading.
Wide Bore Option
The standard 52 mm bore covers most bar work, and an 80 mm option opens the machine to larger stock.
Serviceable Layout
A conventional level-bed layout keeps setup, tool changing and chip removal familiar to any turning shop.
Key Numbers
The CK6140 at a Glance
Four figures that decide whether this machine fits the part.
400mmSwing over bed
2000mmMax centre distance
1800rpmMax spindle speed
52mmSpindle bore
750 to 2000 mm
Four centre distances let the same machine cover short production parts and long shafts without changing the model.
6000 / 8000 mm/min
Rapid traverse on X and Z keeps non-cutting time short between features and tool positions.
130 mm Quill Travel
Enough tailstock reach to support a long shaft and still leave room for the tool to work the end face.
Operating Cycle
From Bar to Finished Part
The routine follows the level-bed layout: set, support, cut, check.
01
Clamp the Workpiece
Load the part in the chuck, or feed bar through the 52 mm bore, then bring up the tailstock for shaft work.
02
Set the Tools
Load the four-station tool post with 25 by 25 mm tools and enter the offsets for the job.
03
Run the Program
The machine turns the profile and any threads in one program, with rapid moves between features.
04
Measure and Release
Check the first part against the drawing, then run the batch; the hardened ways hold the setting across the run.
Where It Earns Its Place
Shafts, Flanges and General Turning
The CK6140 suits shops that turn a wide mix of parts and value a layout the operators already know.
Shafts & Axles
Stepped shafts, spindles and pins turned between centres with tapers and threads cut in the same program.
Flanges & Discs
Faced, bored and turned outside diameters on parts within the 400 mm swing, ready for drilling or assembly.
Repair & Job Shops
Mixed batches where the level-bed layout and wide bore make changeover quick and tool setting familiar.
Ordering & Support
Commissioning the CK6140
Configuration is agreed before production and support does not depend on shipping the machine back to us.
Shipping
The machine is packed on a braced skid in a container, with the bed and saddle secured for transport.
Installation
Levelling, alignment and trial cut are covered by drawings and remote video commissioning.
24-Month Warranty
Parts covered, with free replacement components and lifetime engineering support for the life of the machine.
Tooling Support
Collets, chucks, tool holders and a starter tooling set can be shipped with the machine.
- Lead timeRoughly 30 to 45 working days for a standard build, longer for the 80 mm bore or stepless spindle.
- Volume termsAgreed per order against configuration and destination — send your target volume and port.
- Free turning trialSend a drawing and we return a trial part with its measured report.
- Operator trainingEnglish manual, program walkthrough and live remote sessions.
FAQ
CK6140 Lathe Questions
The CK6140 turns internal and external cylindrical, conical, arc and end faces, and cuts metric and imperial single-start and multi-start threads. Its level bed and long travel suit shaft work between centres, while the 400 mm swing and 210 mm cross-slide clearance cover a wide range of disc and flange parts.
Rigidity comes from the structure. The bed is a high-rigidity casting with a widened saddle, the guideways are wear-resistant cast iron hardened and ground so geometry is held over years of cutting, and the spindle runs in high-precision rolling bearings. That combination is what keeps the machine stable under heavy and interrupted cuts.
The spindle has a 52 mm bore as standard with an 80 mm option, an MT6 taper and a C6 nose. Speed is selected through two manual ranges, L 100 to 500 rpm and H 500 to 1800 rpm, with stepless speed as an option. An electric four-station tool post takes 25 by 25 mm tools, and the tailstock carries a 65 mm quill on an MT4 taper with 130 mm of travel.
The machine turns the usual shop materials: carbon and alloy steel, stainless steel, cast iron and non-ferrous bar and castings. Threading covers metric and imperial standards in both single-start and multi-start forms, and arc and conical profiles are programmed in the usual way.
The X-axis travel is 230 mm and the Z-axis travel matches the centre distance selected, from 750 up to 2000 mm. X-axis rapid traverse is 6000 mm per minute and Z-axis rapid traverse is 8000 mm per minute, with the saddle and cross slide driven through preloaded ball screws.
Standard builds ship in roughly 30 to 45 working days, with the 80 mm bore, stepless spindle or longer bed adding to that. Every machine is assembled, aligned and trial cut before packing, and we provide English manuals, a parameter file, video commissioning and remote operator training, with lifetime support after delivery.
Related Models
Other Lathes in the Range
For a larger swing stay flat-bed; for faster chip-to-chip time move to a slant bed. Compare them here, or see all CNC lathes.
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45° integral bed and Taiwan linear guides with a high-precision spindle unit, for faster cycles on small and medium parts.
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