The Okuma LU7000 EX is a heavy-duty, large-capacity twin-turret CNC turning center designed for machining extremely large and heavy workpieces with high productivity and precision. As part of Okuma’s LU EX series, it features a robust 2-saddle (dual-turret) configuration that enables simultaneous 4-axis machining, significantly reducing cycle times and increasing throughput. Okuma Corporation developed this model specifically for demanding industries such as oil & gas, energy, and heavy engineering.
The machine supports a maximum turning diameter of approximately 900 mm and a turning length of up to 2,000 mm, making it ideal for large shafts, pipes, and heavy components. Spindle speeds reach up to around 1,500 rpm, supported by high-power motors ranging from 45 kW to 75 kW, enabling aggressive material removal and heavy-duty cutting.
The LU7000 EX features upper and lower turrets (typically 12-station and 8/10-station), allowing simultaneous machining operations for improved efficiency. Optional features include live tooling, Y-axis capability, and sub-spindle configurations, enabling multitasking operations and process consolidation.
Equipped with Okuma’s Thermo-Friendly Concept and OSP control system, the machine maintains stable accuracy during long machining cycles. Overall, the LU7000 EX is engineered for maximum productivity, power, and reliability in large-part machining environments.
OKUMA LU7000 EXSPECIFICATIONS
OKUMA LU7000 EX – AXIS
4-Axis CNC Turning Center
X-Axis and Z-Axis (upper & lower turrets)
C-Axis (spindle indexing and contouring)
Optional Y-Axis (MY configuration)
Dual Turret System (Upper + Lower)
Designed for simultaneous multi-axis machining
OKUMA LU7000 EX – AXIS TRAVELS
X-Axis Travel: Approx. 350–420 mm
Z-Axis Travel: Approx. 1,000 / 1,500 / 2,000 mm
Optional Y-Axis Travel: Approx. +100 / -70 mm
Rapid Traverse (X): Approx. 20 m/min
Rapid Traverse (Z): Approx. 25 m/min
OKUMA LU7000 EX – CAPACITY
Maximum Turning Diameter: Approx. 700–800 mm
Maximum Turning Length: 1,000 / 1,500 / 2,000 mm
Standard Chuck Size: 15–18 inch class
Bar Capacity: Up to approx. 110 mm
Suitable for very large and heavy components
OKUMA LU7000 EX – SPINDLE
Maximum Spindle Speed: Up to 2,000–2,800 RPM
Spindle Motor Power: Approx. 30/22 kW (higher optional)
Spindle Nose: A2-11 / A2-15
Large bore spindle for heavy-duty machining
High torque spindle for large diameter cutting
OKUMA LU7000 EX – TABLE / STRUCTURE
Machine Type: Heavy-duty slant bed CNC lathe
45° slant bed design
Box guideways for maximum rigidity
Thermo-Friendly Concept
Designed for continuous heavy cutting operations
OKUMA LU7000 EX – TOOL TURRET
Upper Turret: 12 stations
Lower Turret: 10–12 stations
Dual turret simultaneous cutting
BMT tooling interface
Optional live tooling capability
OKUMA LU7000 EX – FEEDRATES
Rapid Traverse (X/Z): Approx. 20–25 m/min
Programmable feed rates
Optimized for heavy material removal
Reduced cycle times with dual turret operation
OKUMA LU7000 EX – COOLANT & CHIP MANAGEMENT
Flood coolant system
Optional high-pressure coolant
Heavy-duty chip conveyor: Standard
Efficient chip evacuation for large chips
OKUMA LU7000 EX – CONTROL SYSTEM
Control: Okuma OSP-P300 / OSP-P500
IGF conversational programming + G-code
Thermo-Friendly Concept
Machining Navi (optional)
Advanced multitasking interface
OKUMA LU7000 EX – POWER & AIR REQUIREMENTS
Power Requirement: Approx. 70–100 kVA
Voltage: 200–400V
Air Requirement: Clean compressed air
Air Pressure: Approx. 5–6 bar
OKUMA LU7000 EX – DIMENSIONS
Machine Length: Approx. 5,500–8,000 mm
Machine Width: Approx. 3,000–3,800 mm
Machine Height: Approx. 2,500–3,200 mm
Machine Weight: Approx. 15,000–25,000 kg
OKUMA LU7000 EX – GENERAL INFORMATION
Machine Type: Heavy-Duty Dual-Turret CNC Lathe
Manufacturer: Okuma
Designed for large-scale, high-load machining
Supports simultaneous machining operations
Ideal for large part production environments
INDUSTRIES THAT USE OKUMA LU7000 EX
Oil & Gas
Heavy Equipment
Aerospace
Power Generation
Shipbuilding
TYPICAL PARTS OKUMA LU7000 EX CAN PRODUCE
Large shafts
Oilfield drilling components
Heavy flanges
Turbine components
Large industrial parts
WHY CHOOSE OKUMA LU7000 EX
Extremely high capacity for large parts
Dual turret increases productivity
Built for heavy-duty and continuous machining
High torque spindle for demanding applications
Excellent rigidity and thermal stability
Ideal for large-scale manufacturing operations
WHY BUY USED OKUMA LU7000 EX
Buying a used Okuma LU7000 EX is a strong investment for manufacturers that require large-part machining capability while controlling capital costs. These machines are built with extremely rigid structures, high-torque spindle systems, and dual-turret configurations, allowing them to maintain accuracy and productivity even after years of heavy use.
Cutting time (spindle hours) is one of the most critical factors when evaluating a used LU7000 EX. Machines with low cutting hours—typically under 5,000–7,000 hours—are considered lightly used and can perform close to new condition. Units with moderate usage (7,000–18,000 hours) remain highly reliable for most heavy machining applications if properly maintained. Machines exceeding 18,000–30,000+ hours may require servicing of major components such as spindles, turrets, or drive systems, but they can still offer strong value for less demanding workloads.
One of the biggest advantages of the LU7000 EX is its simultaneous machining capability. With dual turrets cutting at the same time, it significantly reduces cycle times compared to single-turret machines. Even older units retain advanced features such as live tooling, Y-axis options, and automation compatibility, allowing process consolidation and improved efficiency.
For manufacturers handling large, heavy components, a used LU7000 EX offers exceptional power, productivity, and long-term value at a reduced investment.
HOW MUCH DOES A USED OKUMA LU7000 EXCOST?
The cost of a used Okuma LU7000 EX varies depending on manufacturing year, configuration, condition, and especially cutting time. Since the model was introduced in the late 2010s, pricing is generally segmented by age and usage rather than pre-2000 categories.
For early machines (2017–2019), prices typically range from $150,000 to $280,000. These units often have higher cutting hours (12,000–30,000+) and may require maintenance or refurbishment, but they still provide full dual-turret, heavy-duty machining capability.
Machines built between 2020 and 2022 generally fall in the $280,000 to $450,000 range. These represent the most active segment in the used market and usually include moderate cutting hours (6,000–18,000), along with improved controls and automation compatibility.
For newer machines from 2023 to 2025, prices can range from $450,000 to $750,000 or more depending on configuration, tooling packages, and automation systems. These machines typically have low cutting hours (under 5,000) and are close to new condition.
Cutting time is a major pricing factor—machines with lower spindle hours command significantly higher values regardless of age. Buyers should also evaluate spindle power, turret configuration, and maintenance history to determine the true overall investment and long-term return.