Okuma LB 3000 EX II MY
Key Specifications
Max Swing
Max Turning Length
Bar Capacity
Main Spindle Speed
Main Spindle Motor
Spindle Nose
Overview
The Okuma LB 3000 EX II MY is a turning center that combines a Y-axis and live tooling with the proven LB 3000 EX II platform to deliver comprehensive turn-mill capability for medium-diameter precision parts. The MY configuration adds a Y-axis with +/- 52.5 mm of travel, enabling milling, drilling, and slotting of features offset from the part centerline without a secondary VMC operation.n
The machine features a 4,200 RPM main spindle with a 15 kW (20 HP) motor and a 12-station turret that accepts live tooling at up to 6,000 RPM. Bar capacity is 76 mm (3 in), covering hydraulic systems, pneumatic valves, automotive drivetrain parts, and medical devices. The sub-spindle option extends the machine to complete part machining, eliminating datum transfer errors between setups.n
All LB series machines from Okuma run on the OSP-P300L control, one of the most respected CNC systems in the turning industry. The OSP control provides sophisticated conversational programming via TURN-MATE i, thermal compensation via TAS-S (Thermal Active Stabilizer for Spindle), and extensive diagnostics. The built-in simulation prevents costly crashes when programming complex Y-axis and live-tool routines.n
Okuma build quality and thermal stability give the LB 3000 EX II MY a reputation for holding tight tolerances over long production runs. The machine is commonly found in aerospace subcontract shops, fluid power manufacturers, and medical device facilities where dimensional consistency and surface finish requirements are stringent.
Full Specifications
| Parameter | Value |
|---|---|
| Max Swing | 580 mm (22.8 in) |
| Max Turning Length | 750 mm (29.5 in) |
| Bar Capacity | 76 mm (3 in) |
| Main Spindle Speed | 4,200 RPM |
| Main Spindle Motor | 15 kW (20 HP) |
| Spindle Nose | A2-6 (Camlock) |
| Y-Axis Travel | +/- 52.5 mm (2.07 in) |
| Live Tool Speed | 6,000 RPM |
| Turret Stations | 12-station (VDI-40 or BMT-65) |
| Rapid Traverse (X/Z/Y) | 20 / 24 / 12 m/min |
| Control | Okuma OSP-P300L |
| Machine Weight | approx. 7,200 kg (15,870 lb) |
| Okuma Global Repair Center | Charlotte, North Carolina |
Specifications sourced from okuma.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Y-axis travel of +/- 52.5 mm is generous for a medium-class lathe, enabling complex off-center milling operations
- Okuma OSP-P300L control with TURN-MATE i conversational programming and built-in simulation reduces programming time and crash risk
- Thermal Active Stabilizer maintains dimensional consistency during long production runs
- Exceptional Okuma build quality and rigidity hold tight tolerances on demanding aerospace and medical materials
- Sub-spindle option enables complete part machining in a single setup, eliminating datum transfer errors
Limitations
- Higher price of entry than Haas or Doosan Y-axis lathes of similar capacity
- OSP control has a steeper learning curve for operators trained primarily on Fanuc-based systems
- 4,200 RPM main spindle speed is conservative for high-speed turning of aluminum compared to some competitors offering 5,000+ RPM
Best For
Frequently Asked Questions
01
The LB 3000 EX II MY provides +/- 52.5 mm of Y-axis travel, sufficient for most off-center milling operations on medium-diameter turned parts.
02
The MY suffix designates the Y-axis and live tooling configuration. The standard LB 3000 EX II is a conventional CNC lathe without Y-axis capability. The MY version adds the Y-axis saddle, live tooling, and C-axis contouring capability.
03
The machine uses the Okuma OSP-P300L CNC, which includes TURN-MATE i conversational programming, collision avoidance simulation, thermal compensation, and comprehensive diagnostics.
04
The sub-spindle is an available option, not standard. When equipped, the machine can completely machine both ends of a part in a single setup.
05
The LB 4000 EX II is the next size up, handling larger diameter parts and providing more turning length. Both share the OSP-P300L control and the MY configuration is available on both.
Videos
EMEC Machine Tools Inc
Okuma America Corporation
Morris
Kremin Inc. Manufacturing
Okuma America Corporation
Community Discussions
Comparison and buying advice — Okuma LB3000EX-II vs. Genos L3000 : r/Machinists - Reddit
Community discussion — Which lathe machine you prefer to learn and work on Okuma ...
Owner experience and review — What are your experience with okuma machines? :
Community discussion — Okuma...Love or Hate? : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.
