CK40D-1 Heavy Duty CNC Lathe Machine for Stable Metal Turning
The CK40D-1 heavy duty CNC lathe machine is designed for manufacturers that need a stable, economical, and easy-to-use turning solution for small and medium metal parts. It supports common turning operations such as external turning, internal boring, end facing, threading, grooving, and shaft-type part machining.
For B2B buyers, a lathe machine is not only about maximum diameter or motor power. What matters more in daily production is whether the machine can maintain stable cutting, reduce vibration, control machining consistency, and provide practical operation for repeated parts. The CK40D-1 is built around these requirements with a classic manual two-gear spindle box, plastic-coated guide rail sliding surface, 4-station turret, and multiple bed length options.
As a CNC turning lathe, the CK40D-1 provides a maximum workpiece rotation diameter of 400mm over the bed and processing length options of 600mm, 850mm, and 1350mm depending on machine length. It is suitable for shafts, sleeves, bushings, threaded rods, mechanical fittings, and general industrial components.
For workshops looking for a practical flat bed CNC lathe, this model offers a good balance between machining capacity, machine stability, price control, and production usability.
Key Features
Classic Manual Two-Gear Spindle Structure
The spindle box adopts a classic manual two-gear structure. This design is silent, stable, and practical for workshop production. The spindle speed range covers 60–2000r/min, with low-speed and high-speed ranges available:
- Low gear: 60–460r/min
- High gear: 400–2000r/min
This allows the operator to select a suitable speed range according to workpiece diameter, material, cutting depth, and machining process.
For larger workpieces, lower speed provides better torque control. For smaller parts or finishing operations, higher speed helps improve machining efficiency and surface finish.
400mm Maximum Swing Over Bed
The CK40D-1 supports a maximum workpiece rotation diameter of 400mm over the bed. The maximum machining diameter over the skateboard is 226mm. This makes the machine suitable for small-to-medium metal parts, including shafts, flanges, sleeves, bushings, fittings, and repair components.
For B2B buyers, this size range is useful because it covers many common industrial turning applications without requiring an oversized machine.
52mm Spindle Through-Hole
The spindle through-hole diameter is 52mm, and the spindle hole can pass through bar stock up to 50mm in diameter. This is useful for bar-fed or long shaft-type machining where the material needs to pass through the spindle.
A larger spindle bore improves flexibility when processing rods, tubes, shafts, and longer cylindrical parts.
Plastic-Coated Guide Rail Sliding Surface
The sliding surface of the machine tool guide rail is coated with plastic, which helps reduce friction damping. This supports smoother movement and improves operational stability during turning.
For a flat bed CNC lathe, guide rail performance directly affects machining consistency, surface quality, and long-term machine usability.
Stable IT7–IT6 Machining Accuracy
The CK40D-1 can stably reach IT7–IT6 machining accuracy, and the machined surface roughness can reach Ra1.6. This makes it suitable for general industrial parts where stable dimensional control and acceptable surface finish are required.
For parts such as shafts, sleeves, threaded components, and machine repair parts, this accuracy level is practical for many production and maintenance applications.
4-Station Turret
The machine is equipped with a 4-station turret. This allows operators to arrange multiple tools for different turning operations, such as external turning, grooving, threading, and boring.
A 4-station structure is simple, practical, and suitable for economical CNC turning production where process reliability matters more than excessive tool capacity.
Multiple Machine Length Options
The CK40D-1 is available in 750mm, 1000mm, and 1500mm maximum workpiece length options. Corresponding maximum processing lengths are 600mm, 850mm, and 1350mm.
This gives buyers more flexibility to choose the right model according to part length, workshop space, and production requirements.
Benefits for B2B Manufacturing Buyers
Practical and Cost-Effective Turning Solution
The CK40D-1 is designed with an economical and practical structure. It is suitable for manufacturers that need dependable CNC turning capability without unnecessary high-end configuration.
For small and medium workshops, equipment repair centers, and industrial parts suppliers, this heavy duty CNC lathe machine provides a useful balance between cost and performance.
Stable Machining Consistency
The document notes that the machine has good processing consistency and can stably reach IT7–IT6 accuracy. This is important for batch production, where repeated parts need similar dimensions and surface quality.
A stable CNC turning lathe helps reduce rework, improve delivery reliability, and maintain customer confidence.
Suitable for General Metal Part Production
The CK40D-1 can process a wide range of metal components, including shafts, sleeves, bushings, threaded rods, flanges, fittings, and mechanical repair parts.
Its 400mm swing over bed and 52mm spindle through-hole give it enough flexibility for common workshop applications.
Easy Operation and Maintenance
The manual two-gear spindle structure is simple and practical. Compared with more complex spindle systems, this structure is easier for operators to understand and maintain.
For factories with mixed operator skill levels, practical machine design can reduce training difficulty and improve daily production efficiency.
Flexible Length Selection
Buyers can choose from 750mm, 1000mm, and 1500mm machine length versions depending on the maximum part length required. This helps factories avoid overspending on an unnecessarily long bed while still matching actual machining needs.
Technical Specifications
| Item | Specification |
|---|---|
| Product Model | CK40D-1 |
| Machine Type | Heavy Duty CNC Lathe Machine / Flat Bed CNC Lathe |
| Max. Workpiece Rotation Diameter Over Bed | 400 mm |
| Max. Workpiece Length | 750 mm / 1000 mm / 1500 mm |
| Bed Span | 320 mm |
| Max. Machining Diameter Over Bed | 400 mm |
| Max. Machining Diameter Over Skateboard | 226 mm |
| Max. Processing Length | 600 mm / 850 mm / 1350 mm |
| Max. Bar Diameter Through Spindle | 50 mm |
| Spindle Through-Hole Diameter | 52 mm |
| Spindle Inner Hole Front Taper | Morse 6 |
| Spindle Speed Range | 60–2000 r/min |
| Low Gear Speed | 60–460 r/min |
| High Gear Speed | 400–2000 r/min |
| Max. Longitudinal Stroke of Tool Holder | 750 mm / 1000 mm / 1500 mm |
| Max. Horizontal Stroke of Tool Holder | 220 mm |
| Longitudinal Rapid Movement Speed | 8000 mm/min |
| Transverse Rapid Movement Speed | 4000 mm/min |
| Turret Type | 4 standing station |
| Turret Section Size | 25 × 25 mm² |
| Distance from Spindle Centerline to Tool Support Surface | 25 mm |
| Tailstock Center Sleeve Taper | MT4 |
| Max. Tailstock Sleeve Movement | 130 mm |
| Max. Tailstock Transverse Movement | ±10 mm |
| Main Motor Power | 5.5 / 7.5 kW servo |
| Z-Axis Servo Motor Torque | 6 N·m |
| X-Axis Servo Motor Torque | 4 N·m |
| Cooling Pump | 0.125 kW |
| Machine Dimensions - 750mm | 2200 × 1110 × 1774 mm |
| Machine Dimensions - 1000mm | 2450 × 1110 × 1774 mm |
| Machine Dimensions - 1500mm | 2950 × 1110 × 1774 mm |
| Net Weight - 750mm | 1550 kg |
| Net Weight - 1000mm | 1650 kg |
| Net Weight - 1500mm | 1750 kg |
Application Scenarios
Shaft and Sleeve Machining
The CK40D-1 is suitable for shaft parts, sleeves, bushings, rods, and cylindrical components. Its 52mm spindle through-hole and 50mm bar passing capacity make it practical for long or bar-type workpieces.
Mechanical Repair Parts
For repair workshops and maintenance factories, this CNC turning lathe can process replacement shafts, threaded parts, collars, bushings, and simple mechanical components.
Flanges and Fittings
The 400mm swing over bed allows the CK40D-1 to process small-to-medium flanges, fittings, discs, and round components used in industrial equipment.
Threaded Components
With proper tooling, the machine can be used for threaded rods, connectors, nuts, sleeves, and other threaded metal parts that require stable turning and finishing.
General Metalworking Workshops
As a practical flat bed CNC lathe, the CK40D-1 is suitable for job shops, small batch manufacturers, equipment parts suppliers, and general CNC turning service providers.
How to Choose the Right CK40D-1 Length
Choose 750mm for Short Parts and Compact Workshops
The 750mm version is suitable for short shafts, bushings, sleeves, and general small parts. It also saves floor space for workshops with limited layout area.
Choose 1000mm for General-Purpose Turning
The 1000mm version provides a good balance between processing length and workshop footprint. It is suitable for most general shaft and mechanical part machining needs.
Choose 1500mm for Longer Workpieces
The 1500mm version is suitable for longer shafts, rods, threaded bars, and parts that require extended support during machining.
Why Choose the CK40D-1 Heavy Duty CNC Lathe Machine?
Economical and Practical Structure
The CK40D-1 is built for factories that need a reliable machine without overcomplicated configuration. Its structure is practical for everyday production and maintenance machining.
Stable Accuracy and Surface Finish
The machine can stably reach IT7–IT6 accuracy, and the processing surface roughness can reach Ra1.6. This supports reliable machining quality for general industrial parts.
Smooth Guide Rail Movement
The plastic-coated guide rail sliding surface reduces friction damping, helping improve motion smoothness and machining stability.
Suitable for B2B Production and Repair Work
The CK40D-1 is suitable for machine shops, repair centers, industrial component suppliers, and small-to-medium manufacturing plants. It offers enough machining capacity for many common CNC turning tasks.
FAQ
Q1: What is the CK40D-1 mainly used for?
The CK40D-1 is mainly used for turning shafts, sleeves, bushings, fittings, threaded parts, flanges, repair parts, and general metal components.
Q2: Is the CK40D-1 a heavy duty CNC lathe machine?
Yes. The CK40D-1 is a practical heavy duty CNC lathe machine with a 400mm swing over bed, 52mm spindle through-hole, 5.5/7.5kW main motor, and stable machining structure for industrial turning applications.
Q3: What is the maximum bar diameter through the spindle?
The spindle hole can pass through bar stock up to 50mm, while the spindle through-hole diameter is 52mm.
Q4: What spindle speed range does the CK40D-1 support?
The spindle speed range is 60–2000r/min, with low gear at 60–460r/min and high gear at 400–2000r/min.
Q5: What accuracy can the machine reach?
According to the document, the machine can stably reach IT7–IT6 machining accuracy, and the surface roughness can reach Ra1.6.
Q6: How many turret stations does the machine have?
The CK40D-1 uses a 4-station turret, suitable for arranging common turning, threading, grooving, and boring tools.
Q7: Which machine length should I choose?
Choose 750mm for short parts, 1000mm for general-purpose turning, and 1500mm for longer shafts, rods, or extended workpieces.
