The Okuma LU4000 EX is a high-performance twin-turret CNC turning center designed for simultaneous 4-axis machining, making it ideal for high-volume and process-intensive production environments. As part of Okuma’s LU EX series, it represents the latest evolution in dual-saddle lathe technology, combining advanced engineering with proven reliability.
The machine features a rigid 45-degree slant bed with full box-way construction, providing excellent stability, vibration resistance, and long-term accuracy. It is equipped with upper and lower turrets (typically 12-station upper and 8/10-station lower), allowing two tools to cut simultaneously and significantly reducing cycle times.
The LU4000 EX supports a maximum turning diameter of approximately 480 mm and turning lengths up to 1,250 mm depending on configuration. Spindle speeds reach up to around 4,200 rpm, supported by a powerful integral spindle motor that delivers high torque and consistent surface finishes.
Optional features such as live tooling, Y-axis capability, and sub-spindle configurations enable multitasking operations, including milling and complete part machining in a single setup. Equipped with Okuma’s OSP-P300/P500 control and Thermo-Friendly Concept, the machine ensures ease of use and thermal stability. Overall, the LU4000 EX is designed for high productivity, precision, and process integration.
OKUMA LU4000 EXSPECIFICATIONS
OKUMA LU4000 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)
Simultaneous multi-axis machining capability
OKUMA LU4000 EX – AXIS TRAVELS
X-Axis Travel: Approx. 260–300 mm
Z-Axis Travel: Approx. 650 / 1,000 / 1,500 mm
Optional Y-Axis Travel: Approx. +70 / -50 mm
Rapid Traverse (X): Approx. 20–25 m/min
Rapid Traverse (Z): Approx. 25–30 m/min
OKUMA LU4000 EX – CAPACITY
Maximum Turning Diameter: Approx. 480–550 mm
Maximum Turning Length: 650 / 1,000 / 1,500 mm
Standard Chuck Size: 10–12 inch class
Bar Capacity: Up to approx. 90 mm
Suitable for large shaft and chuck components
OKUMA LU4000 EX – SPINDLE
Maximum Spindle Speed: Up to 3,000–4,200 RPM
Spindle Motor Power: Approx. 22/15 kW (optional higher)
Spindle Nose: A2-8 / A2-11
Large bore spindle for heavy-duty machining
High rigidity bearing structure
OKUMA LU4000 EX – TABLE / STRUCTURE
Machine Type: Slant bed CNC lathe
45° slant bed design
Box guideways for maximum rigidity
Thermo-Friendly Concept for thermal control
Built for heavy-duty and continuous production
OKUMA LU4000 EX – TOOL TURRET
Upper Turret: 12 stations
Lower Turret: 8–12 stations
Dual turret simultaneous cutting
BMT tooling interface
Optional live tooling capability (M/MY versions)
OKUMA LU4000 EX – FEEDRATES
Rapid Traverse (X/Z): Approx. 20–30 m/min
Programmable cutting feed rates
Optimized for high material removal rates
Reduced cycle times with dual turret machining
OKUMA LU4000 EX – COOLANT & CHIP MANAGEMENT
Flood coolant system
Optional high-pressure coolant system
Chip conveyor: Standard
Designed for efficient chip evacuation in heavy cutting
OKUMA LU4000 EX – CONTROL SYSTEM
Control: Okuma OSP-P300 / OSP-P500
IGF conversational programming + G-code
Thermo-Friendly Concept
Optional Machining Navi
Advanced multitasking interface
OKUMA LU4000 EX – POWER & AIR REQUIREMENTS
Power Requirement: Approx. 50–70 kVA
Voltage: 200–400V
Air Requirement: Clean compressed air
Air Pressure: Approx. 5–6 bar
OKUMA LU4000 EX – DIMENSIONS
Machine Length: Approx. 4,000–6,000 mm
Machine Width: Approx. 2,500–3,200 mm
Machine Height: Approx. 2,200–2,500 mm
Machine Weight: Approx. 9,000–14,000 kg
OKUMA LU4000 EX – GENERAL INFORMATION
Machine Type: CNC Dual-Turret Turning Center
Manufacturer: Okuma
Designed for heavy-duty, high-volume production
Supports simultaneous multi-process machining
Ideal for large and complex components
INDUSTRIES THAT USE OKUMA LU4000 EX
Automotive
Oil & Gas
Aerospace
Heavy Equipment
General Engineering
TYPICAL PARTS OKUMA LU4000 EX CAN PRODUCE
Large shafts
Heavy-duty flanges
Oilfield components
Hydraulic cylinders
Large precision turned parts
WHY CHOOSE OKUMA LU4000 EX
Dual turret drastically improves productivity
Built for heavy-duty machining applications
Large capacity for bigger components
Excellent rigidity and thermal stability
Flexible configurations for complex machining
Ideal for high-volume manufacturing
WHY BUY USED OKUMA LU4000 EX
Buying a used Okuma LU4000 EX is a strong investment for manufacturers focused on high-efficiency production and reduced cycle times. These machines are engineered for durability, precision, and long-term reliability, making them capable of maintaining performance even after extensive use in demanding environments.
Cutting time (spindle hours) is one of the most important factors when evaluating a used LU4000 EX. Machines with low cutting hours—typically under 5,000–7,000 hours—are considered lightly used and can deliver near-new performance. Units with moderate usage (7,000–18,000 hours) remain highly reliable for most applications if properly maintained. Machines exceeding 18,000–25,000+ hours may require servicing of key components such as spindles, turrets, or axis drives, but they can still provide strong value for less intensive operations.
One of the biggest advantages of the LU4000 EX is its simultaneous 4-axis machining capability. With dual turrets operating at the same time, it enables faster cycle times and higher throughput compared to single-turret machines. Even older units retain features such as live tooling, Y-axis, and automation compatibility, allowing process consolidation and reduced labor requirements.
For manufacturers aiming to increase productivity while controlling capital costs, a used LU4000 EX offers excellent efficiency, reliability, and long-term value.
HOW MUCH DOES A USED OKUMA LU4000 EXCOST?
The cost of a used Okuma LU4000 EX varies depending on manufacturing year, configuration, condition, and especially cutting time. Since the model was introduced around 2014, pricing is typically segmented by age and usage rather than pre-2000 categories.
For early-generation machines (2014–2016), prices generally range from $60,000 to $110,000. These units often have higher cutting hours (12,000–25,000+) and may require maintenance or refurbishment, but they still offer full dual-turret, 4-axis capability.
Machines built between 2017 and 2020 typically fall in the $110,000 to $180,000 range. These represent the most active segment in the used market and usually include moderate cutting hours (6,000–15,000), along with improved controls and automation compatibility.
For newer machines from 2021 to 2025, prices can range from $180,000 to $300,000 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 turret configuration, Y-axis capability, automation integration, and maintenance history to determine the true overall investment and long-term return.
