Okuma LB3000 EX II MY

$180,000 – $240,000 Updated 2026-03-17

Key Specifications

Max Swing Over Bed

680 mm (26.8 in)

Max Turning Diameter

366 mm (14.4 in)

Max Turning Length

1,020 mm (40.2 in)

Chuck Size

254 mm (10 in)

Spindle Speed (Main)

35 – 3,500 rpm

Spindle Motor (Main)

18.5 / 22 kW (25 / 30 HP)

Overview

The Okuma LB3000 EX II MY is a high-performance CNC turning center featuring an integrated Y-axis and live tooling capability, enabling complex milled and turned parts to be completed in a single setup. Part of Okuma's proven LB EX II series, this machine delivers exceptional rigidity and thermal stability through Okuma's Thermo-Friendly Concept, which compensates for thermal displacement automatically.

The Y-axis travel expands the machine's versatility significantly, allowing off-center milling, keyway cutting, cross-drilling, and other operations that would otherwise require a machining center. This makes the LB3000 EX II MY a true done-in-one solution for mid-size turned components with secondary milled features.

Powered by Okuma's OSP-P300S CNC control, operators benefit from a conversational programming interface, real-time monitoring, and seamless integration with automation systems. The control's Machining Navi function intelligently optimizes cutting conditions to minimize chatter and maximize productivity.

The LB3000 EX II MY is well-suited for aerospace, medical device, automotive, and general precision machining environments where part complexity demands simultaneous turning and milling without sacrificing cycle time or accuracy.

Full Specifications

Parameter	Value
Max Swing Over Bed	680 mm (26.8 in)
Max Turning Diameter	366 mm (14.4 in)
Max Turning Length	1,020 mm (40.2 in)
Chuck Size	254 mm (10 in)
Spindle Speed (Main)	35 – 3,500 rpm
Spindle Motor (Main)	18.5 / 22 kW (25 / 30 HP)
Y-Axis Travel	±52.5 mm
Live Tool Speed	50 – 6,000 rpm
Live Tool Motor	3.7 / 5.5 kW (5 / 7.5 HP)
Number Of Tool Stations	12
Bar Capacity	80 mm (3.15 in)
Rapid Traverse (X/Z)	20 / 24 m/min
CNC Control	Okuma OSP-P300S
Machine Weight	Approx. 6,500 kg (14,330 lb)
Floor Space (W X D)	3,025 x 2,008 mm
Max Workpiece Diameter	mm
Max Turning Length	mm
Speed Range	45~5,000
Rapid Traverse X Z	25/30
Standard Power	22/15
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Max Machining Diameter	410
Max Machining Length	500 [1,000; 1,300]
Spindle Nose Type	JIS A2-6

Specifications sourced from okuma.com — verified 2026-03-28

Strengths & Limitations

Strengths

Y-axis enables complex off-center milling in a single setup, eliminating secondary operations
Thermo-Friendly Concept provides automatic thermal compensation for consistent accuracy
OSP-P300S control offers intuitive conversational programming and real-time diagnostics
Robust box-way construction delivers excellent rigidity for heavy interrupted cuts
Machining Navi chatter suppression extends tool life and improves surface finish

Limitations

Higher acquisition cost compared to standard turning centers without Y-axis
12-station turret may feel limiting for very complex parts requiring many tools
Large footprint requires dedicated floor space and proper foundation preparation

Best For

Aerospace components requiring precise off-center features and tight tolerances Medical device manufacturers producing complex turned-milled parts in one setup Automotive suppliers needing high-volume production of shafts, housings, and flanges Job shops seeking to reduce setups and work-in-progress on complex turned parts

Frequently Asked Questions

01 What is the Y-axis travel on the LB3000 EX II MY?

The Y-axis travel is ±52.5 mm (±2.07 in), providing sufficient range for off-center milling, keyway cutting, and cross-hole operations on most mid-size turned components.

02 Does the LB3000 EX II MY support a sub-spindle?

The standard LB3000 EX II MY does not include a sub-spindle. Okuma offers sub-spindle configurations in other LB EX II variants. For done-in-one with backworking, consider the LB3000 EX II MYW variant.

03 What CNC control does the LB3000 EX II MY use?

It uses the Okuma OSP-P300S control, which features a Windows-based interface, conversational programming (THINC), Machining Navi for chatter suppression, and built-in thermal compensation.

04 What is the maximum bar capacity?

The LB3000 EX II MY accepts bar stock up to 80 mm (3.15 in) in diameter, making it suitable for medium-diameter bar work in a bar feeder configuration.

05 How does Okuma's Thermo-Friendly Concept benefit this machine?

The Thermo-Friendly Concept uses structural symmetry and real-time thermal sensors to automatically compensate for heat-induced dimensional changes, allowing the machine to maintain accuracy even during long production runs without a lengthy warm-up period.