Okuma MU-5000V

The Okuma MU-5000V is a double-column 5-axis vertical machining center built around a trunnion table with 500 mm diameter. Travels sit at 800 x 1,050 x 600 mm (31.5 x 41.3 x 23.6 in), the A-axis tilts from +90 to -120 degrees, and the C-axis rotates 360 degrees continuously. That trunnion is supported on both ends, which keeps rigidity high even when the table is swung out at aggressive angles.

The standard spindle runs 10,000 RPM with 11/7.5 kW (15/10 hp) through a BT 40 taper, though Okuma offers options all the way up to 25,000 RPM and 22/18.5 kW for shops that need more speed or torque. A No. 50 spindle option is available for heavy roughing. Rapid traverse hits 50 m/min on all three linear axes, and rotary axes index at 18,000 deg/min with a 90-degree clamp/unclamp indexing time of 1.0 second on the A-axis. The standard ATC holds 32 tools, with options scaling up to 268 positions for lights-out cells.

Okuma's Thermo-Friendly Concept comes standard, compensating for thermal displacement across the entire machine structure so dimensional accuracy holds from cold start through an eight-hour run without warm-up cycles. Collision Avoidance System is also standard, not optional. The 5-Axis Auto Tuning system corrects geometric errors in the rotary axes automatically, which matters on a trunnion-style machine where even small angular errors compound across all five axes.

The MU-5000V-L variant adds turning capability at up to 1,000 RPM table rotation, turning this into a mill-turn platform that handles drilling, milling, and turning in a single setup. Max workpiece envelope is 700 mm diameter by 500 mm height, with a 500 kg table load capacity. That covers most aerospace structural components and die/mold work.

Forum owners call the MU-5000V "built like a tank" and praise Okuma's service team. The machine includes 7 MPa (1,000 PSI) through-spindle coolant in the base price, which competitors often charge extra for. The main gripes are the OSP control learning curve for Fanuc-trained operators and the 220 mm spindle nose diameter, which can cause clearance issues in tight 5-axis work with long tools. Compared to the Hermle C 400 or DMG Mori DMU 50, the Okuma typically comes in cheaper while offering larger travels and heavier cutting capacity, though surface finish in simultaneous 5-axis contouring may trail the European machines.

Machine weight is approximately 15,380 kg (33,900 lb). Floor space runs 3,995 x 2,750 mm (157 x 108 in). Current production models ship with the OSP-P500 control; older units run the OSP-P300MA. Specs sourced from Okuma published data, dealer brochures, and verified used-equipment listings.