C400K CNC Slant Bed Lathe with High Accuracy

C400K CNC Slant Bed Lathe Introduction

The bed is cast with high-quality resin sand, which has good rigidity, good shock resistance, and smooth chip removal. The spindle box bearing adopts double row cylindrical roller bearings and bidirectional thrust angular contact bearings, which have high rigidity. The heat dissipation adopts a corresponding structural design to reduce the thermal deformation of the spindle, so that the spindle can maintain the relative stability of the spindle axis during long-term operation. C400K CNC Slant Bed Lathe With High Accuracy series full-function lathes are equipped with 8-12 servo hydraulic turrets. Fast indexing and positioning, high indexing accuracy. Good turning rigidity. The tool turret has a water outlet function in the center of the tool, and the water outlet pressure is high. The water tank that provides central water outlet has sufficient capacity, and there will be no flow interruption during the processing. It is equipped with a filtration system and has high filtration accuracy.

1. The lathe uses an hydraulic servo turret with high positioning accuracy, fast tool change time, and minimal deformation under heavy cutting.
2. The transmission system uses linear roller guideways imported from Taiwan to meet the requirements of high speed and high efficiency. It reduces friction resistance and deformation caused by temperature rise, improves the machining accuracy, and ensures the long-term stability of the cutting machining accuracy.
3. Integral fully-enclosed protection makes it durable, with stable operation and low noise. It is superior to similar products in terms of waterproofing, oil drainage, dustproofing and safety performance.
4. The machine with an electrical cabinet has good sealing performance and uses the heat exchanger to ensure normal operation in a high-temperature and high-humidity environment.
5. The chip conveyor (optional) has the advantages of smooth chip removal, compact size, high efficiency, stable delivery, low noise, and overload protection, etc.

Description of the basic structural features of the machine tool

1 Bed

The bed features an integrated 45° slant bed circular cavity cast iron structure, ensuring heavy-duty cutting capability. The bed is cast using high-quality resin sand, offering excellent rigidity, vibration resistance, and smooth chip removal.

2 Spindle Housing

The spindle housing bearings utilize a combination of double-row cylindrical roller bearings and double-direction thrust angular contact bearings, providing high rigidity. The structural design incorporates measures to reduce spindle thermal deformation, ensuring the spindle maintains relative stability along its axis during prolonged operation.
structural design to minimize thermal deformation of the spindle, ensuring relative stability of the spindle axis during prolonged operation.

3 Feed System

The X and Z-axis servo motors are directly connected to precision ball screws via elastic couplings, offering high precision. The ball screws are fixed at both ends, enhancing
the support stiffness of the bearing seats, thereby minimizing distortion and deformation caused by frequent high-speed positioning and heavy cutting. The bearings are specialized 60-degree angular contact precision bearings for ball screws, offering high speed and precision.

4 Slide

The transmission system uses imported Taiwanese linear rolling guides to meet high-speed and efficient requirements, reducing friction resistance and temperature-induced deformation, thereby improving processing precision and ensuring long-term stability of cutting accuracy.

5 Tool Turret

The series of fully functional lathes are equipped with 8-12 servo-hydraulic tool turrets. They feature fast indexing positioning, high indexing accuracy, and excellent turning rigidity.
The tool turret is equipped with a central coolant supply function, providing high coolant pressure. The coolant tank capacity is sufficient to prevent coolant flow interruption during machining, and it is equipped with a filtration system for high filtration precision.

6 Hydraulic System

Hydraulic chuck clamping, releasing, and tailstock sleeve extension/retraction can be controlled by both program commands and foot pedal operations, offering convenience and efficiency. Hydraulic pressure adjustment is controlled via panel-mounted rotary knobs with dial displays, ensuring safe and convenient operation.
Hydraulic chuck clamping, releasing, and tailstock sleeve extension/retraction can be controlled via foot pedal in addition to program control, offering convenience and efficiency. Hydraulic pressure adjustments are performed using panel-mounted rotary knobs with dial displays, ensuring safe and convenient operation.

7 Lubrication System

The machine tool employs an automatic centralized lubrication system with timed and metered oil supply. The oil distributor adjusts supply pressure according to the pressure requirements of different lubrication points to ensure adequate lubrication for all lubrication points (such as guideways, inserts, lead screws, nuts, etc.).
A lubrication system alarm function is also provided.

8 Cooling System

The slant bed CNC lathe features full guideway protection, with the coolant tank and chip conveyor separated from the main machine to prevent thermal cutting effects from affecting machine accuracy.

9 Electrical System

The machine tool's electrical unit cabinet has excellent sealing performance and is equipped with an electrical cabinet air conditioner to ensure the CNC system operates normally in high-temperature and high-humidity environments.

10 Limit Collision Prevention Measures

Rubber buffer collision prevention devices are installed on the bearing seats at the positive and negative limit travel positions of the axes to provide final protection for the double-nut ball screw pairs against damaging collisions under abnormal conditions.

11 Safety Protection

The machine tool features a fully enclosed internal sheet metal design and a fully enclosed external sheet metal design, with sheet metal thickness of no less than 2mm. During operation, the machine tool remains free from deformation and vibration.
Internal protective covers made of stainless steel are used for the guideways, lead screws, nuts, and bearings. Chip removal and debris cleanup are convenient.

Main Lathe Machine Parts

Spindle The spindle box bearing features a structure of double-row short cylindrical roller bearings. This configuration enables it to achieve high precision and rigidity, thereby ensuring the long-term precision and stability during heavy-duty cutting operations. Spindle Speed: 3000rpm;2500rpm Spindle Power: 11kW Spindle Taper Hole: Φ62 mm; Ф86mm Headstock Improvements are made to the heat dissipation air duct and heat sink of the spindle headstock, reducing the temperature rise of the spindle box by 15%.
	45° Integrally Slant Bed Structure This structure ensures high stability and rigidity during the machine tool's operation, as well as the stability of mass-produced product quality. With multiple aging treatments, the stability and rigidity of the machine tool are significantly enhanced. Casting Structure Using a circular cavity structure, the machine rigidity is increased by 1/3 with the same load and same machine size.
Integrated Pallet The integrated design of the motor base and the slide plate features excellent strength, which reduces the assembly precision error and ensures the machine's precision. X/Z-axis Travel: 200/500mm; 200/1100mm X/Z-axis Rapid Traverse Speed: 20/25m/min

CNC Slant Bed Lathe C400K Feature:

Adopts 45° Machine Bed, High Rigidity with Hydraulic Servo 8/12 Tool Post Turret, with Servo Spindle, Hydraulic Through Chuck, and Hydraulic Tailstock, suitable for the Heavy Cutting Shaft and Plate Workpiece Processing.

C400K Slant Bed Lathe Specification

Please note that there may be slight differences in appearance and parameter depending on your options.

Tool Interferogram

C400KA2-6 Slant Bed Lathe Specification

Please note that there may be slight differences in appearance and parameter depending on your options.

Tool Interferogram

C400KA2-8 Slant Bed Lathe Specification

Please note that there may be slight differences in appearance and parameter depending on your options.

Tool Interferogram

C400K CNC Slant Bed Lathe Application

Frequently Asked Questions

Q1: What is the C400K CNC Slant Bed Lathe designed for?

The C400K CNC Slant Bed Lathe with High Accuracy is engineered for precision turning of medium-to-large diameter workpieces where dimensional accuracy and surface finish quality are the primary production requirements. Its slant bed geometry — typically inclined at 45 degrees — combined with a high-rigidity machine body and precision-ground guideways, makes it ideally suited to automotive components, hydraulic parts, aerospace subcontract machining, and high-mix precision engineering operations that demand consistent micron-level repeatability across extended production runs.

Q2: What does 'high accuracy' mean in the context of the C400K?

High accuracy on the C400K refers to a set of verified mechanical and electronic specifications that collectively guarantee tighter-than-standard dimensional output. This includes precision-ground ball screws with minimal backlash, hardened and precision-scraped or linearly guided guideways, a high-precision spindle with certified radial and axial runout figures, closed-loop positional feedback via linear encoders, and a thermal compensation system that counteracts dimensional drift caused by heat generated during extended machining. These combined features allow the C400K to achieve positioning repeatability and part-to-part consistency that standard lathes cannot reliably deliver.

Q3: What is the maximum turning diameter of the C400K?

The C400K CNC Slant Bed Lathe is capable of turning workpieces up to 400mm in diameter, making it well-suited for medium-to-large rotational components, including flanges, shafts, bearing housings, hydraulic cylinders, and precision rings that fall within this diameter range. The maximum turning length varies by configuration and should be confirmed with the manufacturer based on your specific workpiece dimensions.

Q4: Which CNC control systems are compatible with the C400K?

The C400K is typically available with leading CNC control platforms including FANUC 0i-TF, Siemens 828D, and Mitsubishi M80 series. Each platform provides full support for turning cycles, threading, grooving, contour operations, tool life management, and real-time diagnostics. Control system selection should be made at the time of order to align with the operator's existing programming environment and factory maintenance standards.

Q5: Is the C400K suitable for hard turning operations?

Yes. The C400K's rigid slant bed structure, powerful spindle motor, and high-precision guideway system provide the stability required for hard turning — machining hardened steel components (typically 55–65 HRC) with CBN or ceramic tooling to achieve ground-finish quality surfaces without a separate grinding operation. Hard turning capability depends on correct tooling selection, cutting parameter optimization, and workpiece clamping rigidity.

Q6: What industries most commonly use the C400K CNC Slant Bed Lathe?

The C400K is widely deployed across the automotive components sector, hydraulic and pneumatic equipment manufacturing, aerospace subcontracting, medical device component machining, precision mold and die component turning, and high-mix job shop environments where a wide variety of part sizes and materials must be machined to tight tolerances consistently.

Q7: Can the C400K be integrated into an automated production cell?

Yes. The C400K CNC Slant Bed Lathe with High Accuracy is designed with automation readiness as a standard feature. Its open-top workpiece access zone, standardized robot interface points, and compatibility with automatic bar feeders, gantry loaders, and six-axis robotic loading systems make it straightforward to integrate into automated turning cells or continuous production lines with minimal additional engineering.

Q8: What routine maintenance does the C400K require?

Routine maintenance for the C400K includes regular guideway and ball screw lubrication per the manufacturer's schedule, coolant system inspection and cleaning, spindle bearing condition monitoring, turret indexing mechanism checks, and periodic geometric accuracy verification using a test bar and dial indicator. Adhering to the preventive maintenance programme ensures the machine sustains its high-accuracy performance specifications throughout its service life.