Heavy Duty Cnc Lathe Machine

Luoyang Yujie Industry&Trade Co., Ltd is one of the most experienced manufacturers and suppliers of heavy duty cnc lathe machine in China. Please feel free to buy cheap heavy duty cnc lathe machine for sale here from our factory. All customized products are with high quality and competitive price.

 

 

 

Heavy duty cnc lathe machines are core machining equipment for the heavy industry sector. They have outstanding load-bearing capacity, with a single machine capable of carrying heavy workpieces weighing 50-200 tons without the need for segmented machining. The guideway configuration is standard with 2 main guideways, with some special models using 3-4 guideways to enhance stability. The machining length range is 8-40 meters, meeting the needs of integral machining of large shaft and cylindrical parts. It features high output torque, enabling efficient machining with large cutting volumes. The rotation diameter is typically over 1.8 meters, and the maximum cutting diameter is designed according to workpiece requirements. It is widely used in shipbuilding, nuclear power, heavy machinery, and other fields.

 

 

 

 

 

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Parameter Category	Parameter Name	Numerical value
Machining Range	Maximum Slewing Diameter on Bed	2500 mm
	Maximum Slewing Diameter on Slide	1850–2200 mm
	Maximum Workpiece Length	10000 mm
	Maximum Workpiece Weight	63 t
Bed	Guide rail type	Rectangular four-rail system
	Guide rail width	2090 mm
	Bed material	Cast iron, secondary aging
Spindle	Spindle motor power	75/144 kW
	Spindle speed range	0.5–125 r/min(Stepless)
	Center taper	75°
	Signage diameter	2200 mm
	Signage maximum torque	120 kN·m
Feed	Transverse feed range	1–3000 mm/min
	Transverse stroke	1000 mm
	Longitudinal feed range	1–6000 mm/min
	Longitudinal stroke	10000 mm
Tool post	Tool post type	Frame type / V4
	Tool bar cross-section dimensions	80×80 mm
	Maximum cutting force per tool post	120 kN
Tailstock	Sleeve Diameter/Stroke	560 mm / 200 mm
	Sleeve Taper	1:04
	Rapid Traverse Speed	2500 mm/min
Drive	Tool Post Rapid Traverse Motor	4 kW
Outline	Machine Length	About 18475 mm
	Machine Width/Height	3622 mm / 3250 mm
	Machine Weight	About 118000 kg
System	Standard/Optional Equipment	FANUC 0i-TF/Siemens

 

 

 

 

The core structure of a Heavy duty cnc lathe machine is based on its bed and guideway system. The bed is manufactured using a one-piece casting process, possessing ultra-high rigidity and deformation resistance, capable of bearing extremely heavy workpieces and cutting forces. The rectangular or dovetail guideways on the bed are hardened and ground, working in conjunction with heavy-duty sliding or hydrostatic guideway pairs to ensure high-precision movement of the tool post and slide.

 

Simultaneously, heavy-duty lathes are equipped with a large-diameter spindle box, incorporating a high-power spindle motor and a multi-speed transmission mechanism. The spindle uses heavy-duty bearing assemblies, enabling low-speed, high-torque output to meet the demands of heavy-duty cutting of large shaft and disc-shaped workpieces.

 

The feed and support auxiliary structures of a heavy-duty lathe are crucial for stable machining. The feed system uses large-lead ball screws or hydrostatic screws, paired with heavy-duty servo motors, to drive the slide and tool post to achieve high-precision feed movements. The tool post is mostly a heavy-duty vertical or horizontal turret tool post, capable of mounting multiple large tools to meet complex machining requirements.

 

In addition, the equipment is equipped with a heavy-duty tailstock, which hydraulically clamps the workpiece to improve machining stability; some ultra-heavy-duty lathes are also equipped with auxiliary support components such as a center rest and a follow rest to support ultra-long workpieces, prevent deformation during machining, and ensure machining accuracy.

 

 

Precision Machining of Multiple Types of Rotating Surfaces

 

Automatically completes machining of basic rotating surfaces such as external cylindrical surfaces, conical surfaces, spherical surfaces, stepped surfaces, and grooves. It also supports high-precision turning of various metric, imperial, module, and diametral pitch threads. Some high-end models, through multi-axis linkage, can achieve integrated machining of complex curved surfaces, inclined cylinders, and other irregular structures.

 

Balancing Heavy Cutting and High-Efficiency Machining

 

Equipped with a high-power spindle motor (mainstream power 18.5-37kW, heavy-duty customized models can reach over 37kW) and a high-torque drive system, it supports powerful roughing with large depths of cut and large feed rates, quickly removing excess material from large forgings and castings. It also features constant surface speed cutting, ensuring uniform surface roughness during finishing, achieving a balance between efficiency and precision.

 

Expanded Composite Machining Capabilities

 

Supports modular optional milling, turning, boring, drilling, and grinding functions. It can be equipped with a powered turret, automatic tool magazine (24-40+ chain/disc tool magazine), boring machine accessories, etc., enabling multi-process machining of parts in a single setup, significantly shortening production preparation cycles and improving machining consistency.

 

Intelligent and Precise Control

 

Standard configuration includes mainstream high-end CNC systems such as Siemens, FANUC, and Heidenhain. Some models feature a conversational programming system, reducing first-piece setup time by 75% and lowering the operational threshold. It possesses intelligent functions such as tool wear monitoring, vibration suppression, and chip breaking detection. Combined with online measurement devices and a closed-loop control system, it can compensate for machining errors in real time, ensuring the stability of batch machining accuracy. It also features a comprehensive cooling and thermal error compensation system, effectively offsetting the effects of thermal deformation caused by prolonged machining.

 

Heavy-duty stable support and automated operation

 

Through components such as high-rigidity chuck, closed center frame, and heavy-duty hydraulic tailstock (maximum thrust can reach over 14700N), it can stably support and drive the rotation of workpieces weighing tens of tons; it supports optional automatic loading and unloading robots, workpiece probes, dustproof and coolant protection devices, etc., to achieve continuous batch production, reduce manual intervention, and improve operational safety.

 

 

Heavy duty cnc lathe machines are mainly used in core fields such as energy, aerospace, rail transportation, shipbuilding, mining machinery, and heavy machinery. They can process key workpieces such as large shafts, discs, and cylinders, including wind turbine main shafts, steam turbine rotors, ship propeller shafts, rolling mill rolls, large generator stator bases, and mining crusher main shafts. They can meet the processing requirements of high precision, large size, and high rigidity, and are key equipment for the equipment manufacturing industry to produce large core components.

 

 

 

 

 

 

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