The Okuma LB-3000EXII MYW is a Big Bore CNC turning center with a reputation for the kind of rigid, thermally stable, multi-process capability that contract manufacturers, oilfield machinists, and high-mix production shops depend on for complete-in-one part work. This 2023 model carries Okuma's full MYW configuration: a 40 HP main spindle with A2-8 Big Bore nose, 4.10" spindle bore, 3.58" bar capacity, and a 10" hydraulic 3-jaw chuck, paired with a 15 HP programmable W-axis sub-spindle for part transfer and back-side machining. The 12-station turret carries live tooling driven at up to 6,000 RPM through a 7.5 HP live milling spindle, and a Y-axis with +/-115mm of travel turns the turret into a true off-center milling head. Travels of 10.24" X by 39.17" Z support work up to 13.39" cutting diameter and 39.76" turning length, with 22.83" max swing over the bed and 18.50" over the saddle. Rapids run at 984 / 1,181 in/min on X/Z. The control is Okuma's OSP-P300LA, a flagship Windows-based platform with Thermo-Friendly Concept compensation that holds positional accuracy across temperature swings on long unattended runs.
Compared to the prior-generation Okuma LB-3000EX that this LB-3000EXII MYW replaces, the EX II represents a meaningful production-platform refresh rather than a cosmetic update. The original LB-3000EX, introduced in the mid-2010s, used the earlier OSP-P300L control and a stiffer-but-older bed casting profile; the EX II carries the upgraded OSP-P300LA with faster servo response, richer collision avoidance, and improved chip-flow geometry under the work envelope. Thermal compensation is materially better generation-to-generation, holding tighter tolerances over longer unattended runs, and the refreshed bed casting plus updated thermal management push achievable surface finishes higher without adding cycle time. For a buyer weighing an older LB-3000EX against this 2023 LB-3000EXII MYW with Big Bore, Y-axis, and sub-spindle equipped together, the configuration alone justifies the step up - and the EX II's control and platform improvements simply make it the right machine for next-decade production work.