Okuma Captain L370MY

The Okuma Captain L370MY is a high-performance CNC turning center combining turning, Y-axis milling, and C-axis contouring in a single machine platform. The 'MY' designation signifies the integrated main spindle milling Y-axis capability, which provides ±52.5 mm of Y-axis travel to enable off-center drilling, milling slots and pockets, and machining features that cannot be produced on a standard turning center without repositioning.

The machine is built around Okuma's thermally stable Thermo-Friendly Concept construction, which compensates for heat-induced dimensional changes across the structure and spindle to maintain consistent tolerances over long production runs. The main spindle delivers speeds up to 3,500 rpm with a 22 kW (30 hp) motor and 595 Nm of torque — specifications that support heavy turning of steel, cast iron, and difficult alloys. The 12-station turret accepts driven tools at up to 4,500 rpm for milling operations.

Okuma's OSP-P300L control runs the Captain L370MY, providing Okuma's Collision Avoidance System (CAS) as standard to prevent costly crashes during complex multi-axis tool paths. The conversational Machining Navi technology analyzes chatter vibration in real time and automatically recommends spindle speed adjustments to eliminate resonance — a practical benefit in production turning of long, slender shafts or thin-wall components. The control also includes 3D interference checking for complex mill-turn programs.

With a maximum turning diameter of 620 mm and turning length of 1,520 mm, the Captain L370MY handles shaft components from medium to large scale. The machine is well established in aerospace, oil and gas, and energy sector applications where large-diameter flanges, valve bodies, and actuator housings require both turning and substantial milling in a single setup. Bar capacity of 91 mm supports production turning of medium bar stock without a sub-spindle reconfiguration.