USED OKUMA VTR-350A
The OKUMA VTR-350A is a large double-column vertical turning and multitasking center designed for extreme heavy-duty machining of oversized components. As part of Okuma’s VTR-A series, it represents one of the largest and most powerful configurations in the lineup, built to handle massive workpieces with high precision and stability. It is widely used in industries such as energy, aerospace, shipbuilding, and heavy equipment manufacturing, where large diameters, high loads, and complex geometries are common.
A defining feature of the VTR-350A is its double-column (gantry-style) construction, which provides exceptional rigidity and structural stability during machining. This design minimizes vibration and ensures consistent accuracy, even under heavy cutting conditions. The machine is capable of handling workpieces up to approximately 3,500 mm in diameter and lengths up to 1,600–2,400 mm depending on configuration, making it suitable for very large components.
The machine is equipped with a high-torque spindle system, delivering around 55/45 kW of power and operating at speeds up to 160 rpm. This allows for efficient heavy material removal while maintaining precision. Additionally, it can support workpiece weights up to approximately 20,000 kg, reinforcing its role in large-scale machining applications.
Another key advantage is its multitasking capability. The VTR-350A can integrate turning and milling operations, reducing the need for multiple setups and improving overall productivity. It also incorporates Okuma’s Thermo-Friendly Concept, which maintains dimensional stability even with temperature fluctuations, ensuring consistent machining accuracy.
Overall, the VTR-350A is engineered for maximum rigidity, capacity, and efficiency, making it an ideal solution for manufacturers handling very large, heavy, and complex components.
OKUMA VTR-350A SPECIFICATIONS
| OKUMA VTR-350A – AXIS |
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| 2-Axis Vertical Turning Center |
| X-Axis (Cross Rail Movement) |
| Z-Axis (Vertical Ram Movement) |
| W-Axis (Elevating Cross Rail) |
| Optional C-Axis for Positioning |
| Double Column (Bridge-Type) Construction |
| Designed for Heavy-Duty Multitasking |
| OKUMA VTR-350A – AXIS TRAVELS |
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| X-Axis Travel: Approx. 2,000 – 2,500 mm |
| Z-Axis Travel: Approx. 1,250 – 1,500 mm |
| W-Axis Travel: Approx. 800 – 1,200 mm |
| Large Travel Range for Massive Workpieces |
| Supports Deep and Complex Machining |
| OKUMA VTR-350A – CAPACITY |
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| Maximum Turning Diameter: Approx. 3,500 mm |
| Maximum Turning Height: Approx. 1,600 – 2,400 mm |
| Maximum Workpiece Weight: Approx. 20,000 kg |
| Large Envelope for Heavy Components |
| Suitable for Complex Multitasking |
| OKUMA VTR-350A – SPINDLE |
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| Spindle Speed: Approx. 1 – 160 rpm |
| Spindle Motor Power: Approx. 55/45 kW |
| High Torque Output for Heavy Cutting |
| Excellent Stability at Low Speeds |
| Built for Large Diameter Machining |
| OKUMA VTR-350A – TABLE |
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| Table Diameter: Approx. 3,000 mm |
| Maximum Load Capacity: Approx. 20,000 kg |
| Heavy-Duty Rotary Table |
| High Rigidity and Stability |
| Precision Table Rotation |
| OKUMA VTR-350A – TOOL TURRET |
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| Tool Capacity: 23 Tools (Up to 35/59 Optional) |
| Tool Type: Automatic Tool Changer |
| Multitasking Capability (Turning + Milling) |
| Rigid Tool Mounting System |
| Designed for Complex Machining |
| OKUMA VTR-350A – FEEDRATES |
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| Rapid Traverse (X): Approx. 10 – 15 m/min |
| Rapid Traverse (Z): Approx. 10 – 15 m/min |
| Controlled Feed for Heavy Cutting |
| Smooth and Stable Motion Control |
| OKUMA VTR-350A – COOLANT & CHIP MANAGEMENT |
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| Flood Coolant System |
| High-Pressure Coolant (Optional) |
| Heavy-Duty Chip Conveyor |
| Designed for Large Chip Volumes |
| Efficient Chip Evacuation |
| OKUMA VTR-350A – CONTROL SYSTEM |
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| CNC Control: Okuma OSP |
| Control Type: OSP-P300 / OSP-P500 |
| Advanced Multitasking Control |
| High Precision and Automation Ready |
| User-Friendly Interface |
| OKUMA VTR-350A – POWER & AIR REQUIREMENTS |
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| Power Requirement: Approx. 80 – 120 kVA |
| Voltage: 3-Phase Industrial Power |
| Air Requirement: Approx. 5–6 bar |
| Designed for Heavy Industrial Operations |
| OKUMA VTR-350A – DIMENSIONS |
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| Machine Size: Approx. 8,600 × 5,400 × 6,300 mm |
| Machine Weight: Approx. 30,000 – 40,000 kg |
| Large Floor Space Required |
| Heavy-Duty Double Column Structure |
| OKUMA VTR-350A – GENERAL INFORMATION |
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| Machine Type: Double Column Vertical Turning Center |
| Manufacturer: Okuma Corporation |
| Series: VTR-A |
| Application: Heavy-Duty Multitasking |
| Designed For: Large, Complex Components |
| High Rigidity and Thermal Stability |
| INDUSTRIES THAT USE OKUMA VTR-350A |
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| Aerospace |
| Energy & Power Generation |
| Oil & Gas |
| Heavy Equipment Manufacturing |
| Shipbuilding |
| Industrial Machinery |
| TYPICAL PARTS OKUMA VTR-350A CAN PRODUCE |
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| Large Turbine Components |
| Bearing Rings |
| Heavy Flanges |
| Pressure Vessel Parts |
| Pump & Valve Housings |
| Structural Industrial Components |
| WHY CHOOSE OKUMA VTR-350A |
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| Extremely Large Machining Capacity |
| Double Column for Maximum Rigidity |
| Multitasking Capability (Turn + Mill) |
| High Torque for Heavy Cuts |
| Excellent Thermal Stability |
| Ideal for Critical Heavy-Duty Applications |
WHY BUY USED OKUMA VTR-350A
Purchasing a used OKUMA VTR-350A is a strategic choice for manufacturers that require large-capacity machining but want to avoid the extremely high cost of new equipment. Given its size, power, and advanced capabilities, a new VTR-350A represents a major capital investment, often reaching into the multi-million-dollar range. A used machine provides access to the same capabilities at a significantly reduced price.
One of the main advantages is productivity. The VTR-350A combines turning and milling in a single setup, reducing workpiece handling and minimizing alignment errors. This improves machining accuracy while also reducing cycle times. Its ability to handle extremely large parts makes it particularly valuable in industries such as energy and heavy equipment, where component sizes are substantial.
Cutting time (machine hours) is a critical factor when evaluating used machines of this size. Because the VTR-350A is typically used in heavy-duty applications, machines can accumulate high cutting hours. Units with lower cutting time generally have less wear on critical components such as spindle bearings, guideways, and ball screws, resulting in better accuracy and longer service life. However, due to the machine’s robust double-column construction, even higher-hour machines can remain productive if they have been properly maintained.
Durability is another major benefit. The VTR-350A is built with heavy-duty castings and reinforced structures designed for continuous operation. This allows it to maintain performance over long production cycles and extend its usable lifespan, making it a reliable investment in the used market.
Additionally, Okuma’s strong global support network ensures availability of spare parts and service. This is especially important for large machines, where downtime can be costly. Buyers can maintain and operate the machine confidently over the long term.
HOW MUCH DOES A USED OKUMA VTR-350A COST?
The cost of a used OKUMA VTR-350A varies widely depending on machine age, configuration, condition, and total cutting time. As one of the largest machines in the VTR-A series, it commands a premium in the used market due to its size, capabilities, and limited availability.
For machines manufactured before 2000, availability is extremely limited, as this model is part of a more modern generation of double-column multitasking machines. However, comparable early-generation or heavily used units with very high cutting hours (50,000–70,000+ hours) may fall in the range of $250,000 to $600,000. These machines often require significant refurbishment, including spindle work, guideway reconditioning, or control upgrades.
Machines built between 2000 and 2010 are also relatively rare but represent early versions or heavily used units. Pricing for this category generally ranges from $600,000 to $1,200,000 depending on condition and usage. Machines with moderate cutting hours (20,000–40,000 hours) and proper maintenance history offer a good balance between cost and performance.
For machines manufactured between 2010 and 2025, prices typically range from $1,200,000 to $3,000,000 or more. Newer machines benefit from improved CNC controls, better thermal stability, and lower cutting hours. Units with less than 15,000–20,000 hours are considered premium and command higher prices due to their longer remaining service life and higher accuracy retention.
Cutting time is one of the most important pricing factors. Lower-hour machines generally have less wear on critical components, resulting in better performance and reduced maintenance costs. High-hour machines may be cheaper upfront but can require significant investment in repairs.
In conclusion, understanding the relationship between machine age, cutting time, and condition is essential when evaluating a used VTR-350A. A well-maintained machine with moderate hours typically provides the best balance between upfront cost and long-term productivity.
