Meet the Latest in CNC Machining: Okuma LB4000 EX III
Okuma America Corporation has expanded its lineup with the Okuma LB4000 EX III horizontal lathe, the newest member of the company’s proven LB EX family. Built for today’s production floors, it’s engineered to handle the growing demands of modern manufacturing while staying true to Okuma’s emphasis on precision, reliability, and ease of use.
Unveiling the Okuma LB4000 EX III
The LB4000 EX III will make its North American debut at a major manufacturing technology event. Designed for efficiency and accuracy, the machine combines a robust slant bed construction with thoughtful ergonomics so operators can confidently machine larger workpieces and keep parts moving. The result is stable cutting performance, predictable finishes, and a work envelope that makes everyday jobs—and larger ones—feel manageable.
Power That Drives Productivity: High?Torque Spindle
At the heart of the LB4000 EX III is a 10-inch chuck paired with a high-torque spindle. Together, they deliver the muscle and grip needed to cut larger parts with consistency. Add the optional MYW capabilities—milling and a Y-axis—and many operations can be completed in a single setup, which helps boost throughput while trimming setup time. Notably, it’s the only lathe in its category that offers a sub-spindle option, a meaningful advantage when you want to complete first- and second-operations in one machine.
Smarter Control with the OSP?P500
The LB4000 EX III comes equipped with Okuma’s patented OSP-P500 control, a next-generation, open-architecture platform designed to get more from the machine and make day-to-day operation feel straightforward. Highlights include:
- A Windows®-based open-architecture platform for smooth integration with applications from the Okuma App Store.
- Dual-core processors for faster, more efficient processing.
- Built-in cyber-security measures to help protect operational data.
- Energy management features—Thermo-Friendly Concept and ECO functionalities—that support stable machining and mindful power use.
- Touchscreen monitors available in multiple sizes to match operator preference.
- A modern interface that blends user-friendly hard keys, soft keys, and a QWERTY keyboard for intuitive control.
See It in Action
The new LB4000 EX III will be demonstrated at an international manufacturing exhibition, where attendees can watch live machining of aerospace and defense components. The booth will also feature collaborative displays with peripheral technologies from respected industry partners, underscoring Okuma’s commitment to complete, end-to-end manufacturing solutions.
Technical Specifications at a Glance
- Max Turning Diameter: 18.90 inches
- Max Turning Length: 84.65 inches
- Standard Power: 40/30 hp
- Spindle Nose Type: JIS A2-8
- Rapid Traverse X-Z: 984/1181 ipm
- Speed Range: 42~4,200 min?¹
About Okuma America Corporation
Okuma America Corporation is the U.S.-based sales, engineering, and service affiliate of Okuma Corporation, a pioneer in CNC (computer numeric control) machine tools, control systems, and automation. Founded in Japan, Okuma is recognized as the only company delivering complete machine solutions—integrating CNC machines, spindles, and drives within a single, unified framework.
In 2014, Okuma launched the Okuma App Store, reinforcing its focus on seamless integration and performance. The goal is straightforward: equip manufacturers with tools that help them work efficiently, adapt quickly, and stay competitive in critical industries.
Frequently Asked Questions
What is the Okuma LB4000 EX III?
It’s a horizontal lathe designed for high-performance machining, especially when larger workpieces are part of the mix. The machine builds on Okuma’s LB EX platform with upgrades aimed at accuracy, ease of use, and day-to-day productivity.
What are the standout features?
Key features include a 10-inch chuck, a high-torque spindle, and a rigid slant bed for stable cutting. With the OSP-P500 control, optional MYW capabilities (milling and a Y-axis), and an available sub-spindle unique in its category, the machine is set up to reduce setups and streamline workflows.
Where will the LB4000 EX III be showcased?
It will make its North American debut at an international manufacturing technology exhibition. Live demonstrations will highlight machining of aerospace and defense components, along with partner technologies.
Who manufactures the Okuma LB4000 EX III?
Okuma America Corporation manufactures and supports the machine in the United States as part of the global Okuma Corporation network. The broader organization designs and integrates CNC machines, controls, spindles, and drives.
How can I find more information about Okuma products?
You can learn more by visiting Okuma’s website or following the company on its social media channels. Those resources offer product details, software options from the Okuma App Store, and updates on events and demonstrations.
