High Torque CNC Lathe

High Torque CNC Lathe Machine is specialized for heavy-duty turning of large-diameter, long-length, and extra-heavy workpieces that require strong cutting forces, continuous high spindle torque, and long-term structural stability.

Unlike standard CNC lathes, the high-torque drive mechanism maintains peak power at low to medium spindle speeds. This design enables high-depth rough cutting, rapid material removal, and stable finishing on carbon steel, alloy steel, and hard-to-machine industrial metals.

High Low-Speed Torque Output
Standard lathes suffer from power drop-offs at lower spindle speeds, making large-diameter turning slow and inefficient. Our high-torque drive system maintains peak output under heavy load, allowing deeper cutting depths per pass (ap up to 10-12 mm depending on material) and significantly reduced cycle times.

Superior Vibration Damping & Structural Rigidity
Heavy material removal generates massive mechanical stress and chatter. Manufactured from high-density, stress-relieved Meehanite cast iron with reinforced ribbed bedding, our machine structure absorbs cutting vibration, ensuring high surface finish quality and extending cutting tool lifespan by up to 30%.

Built for High-Tonnage Workpieces
Designed from the ground up for extreme industrial applications, accommodating high workpiece weight and extra-long shafts through heavy-duty bed structures, hydraulic steady rests, and robust tailstocks.
 

Heavy Machinery: Drive shafts, industrial rollers, large gears, mechanical housings
Oil & Gas: Heavy valve bodies, large pipe flanges, drill collars, pressure vessel parts
Energy & Wind Power: Wind turbine main shafts, generator rotors, turbine discs
Mining & Construction: Large hydraulic cylinder barrels, excavator drive shafts, heavy pinions
Shipbuilding & Marine: Marine propeller shafts, rudder stocks, stern tube bushings

High Torque Spindle System: Multi-stage gear or direct heavy-duty motor drive delivering massive low-speed torque for large-diameter turned parts and aggressive roughing operations.

Heavy-Duty Cast Iron Bed: Single-piece, high-rigidity bed casting with hardened and ground guideways to minimize structural deformation under 50-ton loads.

Precision Servo Feed Axis: High-torque AC servo motors coupled directly to precision ground ballscrews ensure smooth carriage movement, zero backlash, and high repeatability during long machining runs.

Carbon Steel: Medium & high carbon steel shafting, structural rollers.
Alloy Steel: 4140, 4340, 8620 forged parts, drive components.
Stainless Steel: 304, 316, Duplex stainless oilfield fittings.
Cast Iron: Ductile iron and gray iron housings, valve bodies, gear rings.

Hardened / Tough Materials: Heat-treated alloys.

Workholding Options: Hydraulic chucks, manual 4-jaw independent chucks, faceplates.
Support Systems: Hydraulic auto-centering steady rests, manual steady rests, heavy-duty programmable hydraulic tailstocks.
Automation & Maintenance Options: Automatic chip conveyors (chain/belt type), high-pressure coolant pump systems, automatic centralized lubrication units, tool setters, and tool post options (4-way electric or 8-station hydraulic turrets).

Every machine undergoes rigorous factory testing prior to dispatch:
Geometric & positioning accuracy testing via laser interferometer
24-hour continuous spindle run-in and thermal deformation test
Full electrical, safety interlock, and CNC function inspection
Test-piece heavy cutting load test

Anti-Rust Preservation: Multi-layer anti-rust oil coating, VCI protective wrap, and vacuum heat-sealed barrier bags for ocean transport humidity protection.
Seaworthy Packaging: Heavy-duty steel-reinforced wooden cases built to ISPM 15 international export standards.
On-Site & Remote Support: Detailed technical manuals, installation guide, online commissioning, and on-site engineer support upon request.

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