1-Saddle CNC Lathe LB EX Ⅲ series | PRODUCTS

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1-Saddle CNC Lathe LB EX Ⅲ series

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The innovation that accepts temperature changes

High accuracy can be achieved in normal factory environments

The machining accuracy of workpiece changes significantly due to the ambient temperatures around the machine, heat generated by the machine, and heat generated in machining.
The Thermo-Friendly Concept is a unique concept to “accepting” such temperature changes so that high accuracy can be achieved in normal factory environments with no special measures taken by the user.

Achievement of both high accuracy and high productivity with emissions reduction and energy saving

Green-Smart Machine

We chose the name “Green-Smart Machine” for our machine tool that achieves high accuracy and reduced energy consumption autonomously and realizes high productivity. With Green-Smart Machine, we will contribute to the solution of social issues faced by the global manufacturing industry, together with our customers.

High accuracy

The whole machine is designed to achieve high accuracy.
Outstanding dimensional stability enables stable machining of high-accuracy parts
and stable operation over long hours

Thermo-Friendly Concept is Okuma Intelligent Technology intended to achieve amazing machine accuracy with unique structual design and thermal deformation control technology.
It eliminates the need for cumbersome dimensional compensation and warm-up and demonstrates outstanding dimensional stability in long-term continuous machining, multitasking machine, front and back side machining with a sub spindle, and Y-axis machining.

Okuma Intelligent Technology to enable machines to autonomously maintain high accuracy in a stable mannerThermo-Friendly Concept

Machining dimensional change over time

ø5μm/Room temperature change of 8℃

* LB3000 EX Ⅲ (L specification) turning

Note: The “actual data” referred above represent examples
and may not be obtained due to differences in specifications, tooling, cutting and other conditions.

High productivity

Productivity is increased with powerful machining and quick machine movements

Equipped with a powerful motor	LB3000 EX Ⅲ	LB4000 EX Ⅲ
Spindle size	Bearing ID ø120 mm (bore ø80 mm)	Bearing ID ø140 mm (bore ø91 mm)
Spindle speed	5,000min^-1	4,200min^-1
Max output	22kW	30kW

Turning capacity	LB3000 EX Ⅲ	LB4000 EX Ⅲ
Turning capacity (Material: S45C)	4.4mm²〈actual data〉	6.6mm²〈actual data〉

Higher speed	LB3000 EX Ⅲ	LB4000 EX Ⅲ
Rapid traverse	X: 30m/min 20% shorter cycle time
Rapid traverse	Z: 30m/min

Highest milling performance in the class with high-speed movements and high accuracy

Equipped with a powerful motor	LB3000 EX Ⅲ	LB4000 EX Ⅲ
M spindle speed	6,000min^-1	6,000min^-1
Max output	7.1kW	7.5kW
Max torque	40.4N･m	58.1N･m

Milling capacity	LB3000 EX Ⅲ	LB4000 EX Ⅲ
Milling capacity (Material: S45C)	200cm³/min〈actual data〉

High-speed movements	LB3000 EX Ⅲ	LB4000 EX Ⅲ
Turret rotate	0.1 sec/index	0.2 sec/index
M-spindle start/stop	0.3sec (6,000min^-1)	0.4sec (6,000min^-1)
M-M switch (1 index)	0.7sec	1.5sec

Automation

Optimal cell for mass-production machining of similar parts Loader

It is effective for mass-production machining of similar parts
The workflow line in front of the machine is secured by using the space above it
It is possible to load/unload in a short time and achieve machining with a short takt time

Compact, flexible, and labor-saving cell LB3000 EX Ⅲ ARMROID

Automation is possible in existing spaces
Ability to switch between automatic and manual operations depending on the production situation

Highly versatile and applicable to irregularly shaped parts and high-mix workpiecesStand-alone articulated robot

Highly versatile and applicable to irregularly shaped parts and high-mix workpieces
Layout of peripheral devices is freely configurable
Transfer between different machines, such as a lathe and a machining center, is possible

Photograph shows LB3000 EX Ⅲ

Realizing flexible productionA wide variety of peripheral devices

The automation and manpower saving of production lines is supported by workpiece turnover and other devices that are indispensable for connecting processes

OSP

A next-generation CNC that makes customer manufacturing DX (digital transformation) a reality

Next-generation CNC

Improved productivity and stable production

As Your Single Source for merging M-E-I-K (Mechanics - Electronics - IT - Knowledge) technologies, Okuma offers this CNC to build an advanced “digital twin” that faithfully reproduces machine control and machining operations and creates new value.
In addition, the product helps improve productivity and achieve stable production, featuring ease of use that allows customers to use their machining know-how. Additional features are: control technology that achieves high-speed and high-accuracy machining, energy-saving solutions that achieve both high accuracy/productivity and eco-friendliness, and robust security functions to protect against the increasing threat of cyber attacks.

Faithful digital reproduction of machines and processing Ground-breaking concept of a digital twin
Realizing high-speed and high-accuracy machining Leading-edge machining
Novice-friendly smart operation Innovative operability
Reducing environmental impact Energy-saving solutions
Increasing cyber resilience Robust security

Home screen
Virtual machining
Preparation of the process chart
Operation with the process chart
MacMan plus

Highlighted Specs

Item	Unit	LB3000 EX Ⅲ	LB4000 EX Ⅲ
Standard chuck size	in	8	10
Max turning dia	ømm (øin)	410 (16.14)	480 (18.90)
Max work length	mm (in)	500, 1,000, 1,300 (19.69, 39.37, 51.18)	750, 1,500, 2,150 (29.53, 59.06, 84.65)
Spindle speed	min^-1	5,000	4,200
Turret		V12	V12
Motor	kW (hp)	22/15 (30 min/cont) (30/20)	30/22 (30 min/cont) (40/30)
Machine size (W × D × H)	mm (in)	2,340 × 1,899 × 1,770 (92.13 × 74.76 × 69.69) 3,420 × 2,083 × 1,820 (134.65 × 82.01 × 71.65) 4,344 × 2,083 × 1,820 (171.02 × 82.01 × 71.65)	3,100 × 2,059 × 1,955 (122.05 × 81.06 × 76.97)
Specification Variations		M, W, MY, MW, MYW	M, MY, MW, MYW