The Okuma Multus B250-II is a multitasking turn-mill center with a reputation for rigidity, thermal stability, and done-in-one accuracy that has made the Multus line a mainstay in precision production and contract-machining shops. This 2021 machine runs the Okuma OSP-P300SA control with Collision Avoidance System and Thermal Active Stabilizers, and pairs a 5,000-RPM, 30-HP main spindle (2.598-inch bore, 8-inch 3-jaw chuck) with a 6,000-RPM, 15-HP sub-spindle (1.771-inch bore, 6-inch 3-jaw and 5C collet chucks) for full done-in-one turning, backed by a 12,000-RPM, 16-HP Capto-C6 milling spindle on a 225-degree B-axis with Y-axis and C-axis for true multi-face machining. Tooling is served from a 40-tool ATC, with travels of X 19.69, Y 7.87, and Z 31.5 inch over a 29.53-inch work length and 23.62-inch max turning diameter, rapids to 1,575 IPM, and the machine comes equipped with an LNS Quickload Servo 80 S2 bar loader, Rota-Rack parts unloader, parts catcher, chip conveyor, FX-575 mist collector, and 1,000 PSI high-pressure coolant.
Compared with the original Okuma Multus B250 it replaces, the B250-II is a meaningfully more productive machine, not just a newer one. Where the first-generation B250 ran the older OSP-P200 control, this B250-II carries the current OSP-P300SA with faster processing and higher-accuracy contouring, and Okuma upgraded the platform with greater structural rigidity and thermal stability for tighter tolerances over long unattended runs. The result is a turn-mill that holds size better, cuts harder, and pairs naturally with automation like the included bar loader and Rota-Rack unloader - for a shop stepping up from an older Multus or a separate lathe-plus-mill workflow, that means more complete parts off a single setup with less second-op handling.