Flat Bed CNC Turning Machine
420 mm to 1250 mm swing. This flat-bed CNC turning machine is built for length and heavy cuts. A cnc lathe machine price at this size is set by bed length first, then by the control and the turret.
Flat-bed CNC turning machine range
420 mm to 1250 mm swing. This flat-bed CNC turning machine is built for length and heavy cuts.
The horizontal bed gives you length. For long shafts, hydraulic rods and repair work, the flat-bed layout lets you support the part with steady rests anywhere along the bed. The CKNC range runs from a 420 mm swing bench lathe up to a 1250 mm swing, 755 mm guideway machine for heavy rolls and large flanges.
The bed is cast in one piece and hardened where it matters: 335 mm of guideway on the 40H, 401 mm from the 50H to the 6166, 600 mm on the 6180 and 61100, 755 mm on the 61125. Between centres you can order 500 mm to 4000 mm, and the 61125 will carry 5 tonnes between centres.
- One-piece cast bed, guideways induction hardened and ground
- Plastic-coated saddle and slide ways to stop low-feed stick-slip
- Z ball screws pretensioned so accuracy holds over a 4 m bed
- Vertical 4-station turret standard, 6- and 8-station horizontal as options
- Manual or hydraulic tailstock, interlocked against mis-operation
- GSK control as standard; FANUC, Siemens, Mitsubishi and KND on request
How a flat-bed CNC turning machine is built
Six things decide how a flat-bed lathe behaves under a cut: the bed casting, the way surfaces, the spindle, the feed screws, the turret and the electrics. All nine models take the same approach. Here is what the technical agreements actually specify.
Cast in one piece
Bed and feet are cast as one piece in resin sand, so there is no joint to move under a heavy cut. Guideways are induction hardened at superaudio frequency and then ground: 335 mm on the 40H, 401 mm from the 50H to the 6166, 600 mm on the 6180 and 61100, 755 mm on the 61125. Hardened ways are the first thing to ask about on any cnc machine tools quote, because they decide how the machine behaves in its fifth year.
Plastic-coated slides
The saddle and cross slide run on a plastic-coated surface against the hardened bed. Static and dynamic friction end up close together, which is what stops the slide jumping when you enter a 0.02 mm cut — the usual source of chatter marks at low feed.
Bored for the bar you run
Bores run Φ66 mm (40H), Φ82 mm (50H, 63H, 6166), Φ105 mm (6180, 61100 — 130 mm on request) and Φ130 mm (61125). The 40H, 50H and 63H run an independent or stepless servo spindle on grease; the geared models and the heavy chassis use a built-in gear pump that also carries heat out of the headstock.
Pretensioned screws
X screws are fixed at one end and supported at the other, so heat growth cannot bow them. Z screws are pretensioned and preloaded against the same problem over beds up to 4 m. Servo torque runs from 6 / 10 N·m on the 40H to 15 / 27 N·m on the 6180.
Turret and tailstock
A Hongda vertical four-station electric turret is the standard fit, 200 × 200 to 300 × 300 depending on swing; six- and eight-station horizontal turrets are options. The tailstock is manual as standard and hydraulic on request, with an interlock against moving the quill while the body is locked. Six and eight station turrets are optional, and on the cnc lathe the extra stations pay back on parts with more than four features.
GB 5226.1, IP54 cabinet
Electrical design follows GB 5226.1, with over-current and short-circuit protection on the power circuits, interlocks on machine functions, self-diagnosis and alarm codes on screen. The cabinet is sealed to IP54, with room to add a heat exchanger. Half enclosure is standard; the 6166 ships fully enclosed.
The range in the workshop
Seven of the nine models, photographed in the works. The photographs come from the technical file of each model, so what you see is the machine you order — same bed, same guarding, same turret.
The 63H with the 130 mm twin chuck and the 6150B share the same bed and guarding as the models shown. Side, turret and spindle photographs for any model are available on request.
CNC turning machine specification by model
Nine flat-bed models from 420 mm to 1250 mm swing. Every figure below is taken from the manufacturer’s technical agreement for that model — eight of them signed between 2025 and 2026. Open a model to see its full parameter list.
All figures are the manufacturer’s published values for the CKNC range. Bed length is chosen at order: 500, 750, 1000, 1500, 2000, 3000 and 4000 mm are the standard options, and other lengths are built to order. Spindle bore of the 6180 and 61100 can be opened to Φ130 mm on request. The signed technical agreement for any model is available before you order — ask and we will send the PDF.
Parts that also need milling — flats, keyways, cross holes — are covered by the turn-mill range.
Component brands in the standard build
Machine tools are often sold on the control and nothing else. These are the parts that actually wear, listed by brand in the agreements — so you can price a spare before you need one.
Brands are as stated in the current agreements. If a supplier substitutes a part, the replacement is of equal or higher class and is declared on the order confirmation.
Accuracy, and what the inspection sheet means
Every machine is inspected against GB/T 25659.1—2010, the Chinese standard for simple NC horizontal lathes. The inspection sheet travels with the machine and carries the figures below.
The 40H is inspected to the same standard with its own figures: positioning ≤ 0.01 mm in X and ≤ 0.015 mm in Z, repeatability ≤ 0.0075 mm and ≤ 0.01 mm, machining accuracy IT6–IT7.
Flatness ‘concave only’ means the faced surface may be slightly hollow towards the centre but never proud of it. A part faced on the machine then sits on its rim instead of rocking on its middle.
Why the heavy models show larger roundness and roughness is surface speed, not build quality: their top spindle speed is 370 to 950 rpm against 2500 rpm on the 50H and 63H. Their positioning figure is tighter (0.020 mm in X against 0.032 mm) because they run 6310 Z screws on a 600 to 755 mm bed.
Cylindricity of 0.03 mm over 300 mm works out at about 0.1 mm over a metre of shaft — the number to quote when a drawing calls out taper on a long part.
Which CNC turning machine for which job
Six questions decide the model: how big the part swings, how long it is, the bar or tube that has to pass through the spindle, its weight, and the finish you have to hold. Start from the part, not the price list: a CNC lathe machine price only means something once swing and bed length are fixed, so we quote the CNC machine price in India after the drawing rather than before.
Every model can be built with a different bed length, so the between-centres figure is the one to fix first. Send the drawing and we will tell you which swing and bed length actually clears the part, and point you to the CNC machine for sale on the current build list that matches it.
Standard equipment and options
What arrives with the machine, and what is worth deciding at order time rather than afterwards.
In the crate as standard
- 3-jaw manual chuck, 200 to 400 mm (4-jaw independent on the 61100 and 61125)
- Coolant system with pump and tank, inner or outer tool cooling
- Metered central lubrication unit
- Hand-held MPG with axis select and feed override
- 24 V work lamp and control transformer
- Tool kit: double-ended spanner, hex keys, screwdrivers
- Levelling pads
- Certificate of conformity, packing list, operation and programming manuals
Options at order
- Hydraulic chuck — domestic or Taiwan, hollow or solid
- Hydraulic tailstock with travel and clamp interlock
- Powered tailstock traverse (standard on the 61125)
- Horizontal 6- or 8-station turret
- Φ130 mm spindle bore on the 6180 and 61100
- Alternative control: KND 1000T, FANUC 0i-TF, Mitsubishi M70, Siemens 808D, HNC-808D
- Tailstock automatic lubrication
- Heat exchanger for the electrical cabinet
- Bed lengths 500 to 4000 mm, and special lengths built to order
Power, foundation and warranty
Three things to settle before the machine ships: the supply, the floor it stands on, and who pays if something fails.
380 V, three phase, 50 Hz
The control needs the supply inside ±10 % of 380 V and ±1 Hz of 50 Hz. Outside that a stabiliser has to be fitted, or the control will fault mid-cycle. Everything downstream — 24 V lamp, control transformer — is inside the cabinet.
Level floor or strip foundation
Machines ship with levelling pads and are set on a level floor or a simple strip foundation. At about 6.8 t for the 61100 and 11 t for the 61125, check the slab before you take delivery. Ask us for the setting plan for your bed length.
12 months, three guarantees
Cover runs 12 months from final acceptance, with the three guarantees — repair, replacement, refund — for faults caused by the supplier in normal use. After that, spares and service stay available at supply price.
CNC turning machine questions before you order
Straight answers to what buyers ask before they place an order.
When is a flat bed better than a slant bed?
When the part is long. A horizontal bed carries a shaft between centres without the part hanging off a slanted face, so heavy shaft work and repair jobs stay on the flat bed CNC turning machine.
What does a cnc lathe machine price depend on here?
Bed length, swing, spindle bore and turret stations, then the control. Two machines with the same model number can differ by a third of the price once bed length and control are named.
Can the machine take a bar feeder?
Yes, on the models with a through-spindle bore of 66 mm and above. The feeder is quoted with the machine so the interface and the programme are matched before delivery.
How is accuracy verified before shipping?
A laser or granite-square check is run on the assembled machine and the inspection sheet travels with it, so the figures for roundness and cylindricity can be checked at your floor.
Order a machine built for your work
Tell us the platform, the swing and the bed length you need. We will confirm lead time and shipping, and whether a new build or a used CNC machine already in the works is the faster route.
