2022 Okuma LB-4000EX-II/C750 CNC Lathe

The 2022 Okuma LB-4000EX-II/C750 CNC Lathe is a robust, multitasking machine engineered for high-output precision turning. Featuring a 12-inch hydraulic chuck, 40 horsepower PREX spindle motor, 4200 RPM spindle, and a Big Bore A2-11 spindle nose, it delivers the power needed for heavy-duty machining with large-diameter barstock up to 4.1 inches. The 12-station turret includes live tooling and Y-axis capability, supported by Okuma’s OSP-P300LA control, allowing complex milling, drilling, and C-axis interpolation all in a single setup. With 984 IPM and 1181 IPM rapid traverse rates on X and Z axes respectively, paired with a shower coolant system and LNS hinge-type chip conveyor, the system is optimized for continuous chip management and thermal stability.

Compared to the LB3000MYW, the LB-4000EX-II/C750 offers a heavier duty spindle, deeper turning envelope, and a larger 12-inch chuck, making it better suited for oversized components and extended part lengths up to 29.5 inches. For shops pushing beyond light- to medium-duty turning, this machine represents a significant step up in both torque and work envelope capacity.