Large Diameter CNC Lathe

The Large Diameter CNC Lathe Machine is engineered for heavy-duty turning operations on oversized shafts, large cylinders, pipes, flanges, and other critical industrial components. Featuring a heavy-duty bed structure, large swing capacity, high-torque spindle, and oversized spindle bore, this machine provides exceptional cutting stability and rigidity for severe machining conditions.

Capable of accommodating workpieces up to 2500 mm swing diameter, 15 meters turning length, and 50 tons weight capacity, it serves demanding sectors including oil & gas, shipbuilding, wind power, mining, and heavy machinery manufacturing.

Expanded Oversized Turning Envelope: Effortlessly process components exceeding standard machine tool boundaries, drastically lowering operator handling risks and setup costs.
Rigid Heavy-Duty Bed Architecture: Cast from premium Meehanite iron with stress-relieved heat treatment, suppressing vibration during high-feed roughing and extending carbide insert life.
High-Torque Headstock & Gear Drive: Multi-range automatic gearbox provides massive torque at low RPMs for high material removal rates on alloy steel, stainless steel, and forgings.
Large Through-Bore Design: Allows long oilfield pipes, drill collars, and hollow shafts to pass through the headstock for efficient end-machining and threading.
Precision CNC Automation: Ensures tight tolerances (microns) and repeat accuracy across long machining cycles with automatic thermal compensation.

Oil & Gas Industry: Machining casing, tubing, drill collars, and pressure-containing valve assemblies.
Shipbuilding & Marine: Manufacturing long propulsion drive shafts, rudder stocks, and cylinder liners.
Wind Power & Renewable Energy: Precision turning of wind power generation shafts, hubs, and gear rings.
Mining & Heavy Equipment: Fabricating massive conveyor drums, hydraulic cylinders, and crusher components.

Heavy Machinery Manufacturing: General contract machining for oversized custom industrial forgings and castings.

Heavy Cast Iron Machine Bed: Features wide inductive-hardened box ways that evenly distribute the weight of 50-ton workpieces without structural deformation.
Precision Spindle Assembly: Supported by P4-grade high-precision double-row cylindrical roller bearings to absorb both radial and axial cutting loads.
Hardened & Ground Guideways: Turcite-B coated mating surfaces reduce friction coefficient, eliminate stick-slip, and maintain positioning precision over extended service life.
Heavy-Duty Tailstock System: Motorized or hydraulic tailstock with built-in live/dead center quill provides rigid end-support for long shaft turning.
Centralized Automatic Lubrication: Continuously delivers metered oil to guideways and ball screws to reduce mechanical wear and maintenance downtime.
 

Equipped with industry-leading global CNC controllers for intuitive operation and complex process execution:
Multi-Axis & Spindle Control: Synchronized feed movement with digital AC servo technology.
Tool Management & Compensation: Automatic tool wear compensation, nose radius calculation, and real-time geometry adjustments.
Program Storage & Connectivity: Support for USB, Ethernet, RS232, and Industry 4.0 IoT network integration.
Advanced Diagnostics: Self-diagnosis, alarm history logging, and remote maintenance support to minimize troubleshooting time.

To guarantee reliable field performance, every machine undergoes a strict multi-stage inspection process before dispatch:
Casting Material Inspection: Ultrasonic and hardness testing of machine bed castings to confirm structural integrity.
Component Precision Testing: CMM inspection for critical drive components, spindles, and lead screws.
Spindle Assembly Verification: Dynamic balance testing, temperature rise monitoring, and thermal stability checks.
Geometric Alignment: Laser interferometer testing to measure positioning accuracy, pitch, and yaw across all axes.
Trial Machining Verification: Full-load trial cutting on test workpieces to verify accuracy, surface finish, and dynamic rigidity.

Pre-Shipment Support: Detailed factory inspection reports, video dry-runs, technical documentation, and pre-delivery customer sign-off.
Export Packaging: Multi-layer anti-rust treatment, heavy-duty wooden crate packaging, and secure container tie-downs.
Installation & Commissioning: On-site installation assistance, commissioning by experienced field engineers, and operator training.
Ongoing Technical Service: Lifelong technical advice, fast-response spare parts availability, and remote diagnostic support.

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