Green-Smart Machine | Solutions & Technology Support for people and the environment

“Green-Smart Machine” Declaration

To work toward achieving a carbon-free society, industries are being increasingly expected to strengthen their efforts in resource conservation, environmental responsibility, and decarbonization.
Okuma will contribute to the realization of a carbon-free society and help make society sustainable by working to improve the basic performance of machine tools, such as high accuracy and high productivity, as well as energy efficiency.
We chose the name “Green-Smart Machine” for our machine tools that achieve high accuracy, can reduce energy consumption autonomously, and achieves high productivity. With Green-Smart Machines, we will contribute to providing solutions to social issues that the global manufacturing industry is facing, together with our customers.

High accuracy and high productivity + Decarbonization and energy saving

Consistent accuracy
and reduced carbon emissions at the same timeThe technology behind
Green-Smart Machines

The Okuma Intelligent Technology that enables machines to autonomously maintain high accuracy stabilityThermo-Friendly Concept

Manageable Deformation—Accurately Controlled

The workpiece machining accuracy changes significantly due to machine ambient temperatures, heat generated from in-machine components and cutting. The idea behind Okuma's Thermo-Friendly Concept is simply "accepting" these temperature changes so that high accuracy can be achieved in normal factory environments without requiring special customer preparations. Maintaining excellent accuracy stability is possible without relying on excessive ambient temperature control from machine cooling systems and factory air conditioners.

From 2001 to September 2025 More than 70,000 units were produced

Click here for more on the
Thermo-Friendly Concept

A system for an energy-saving society ECO suite plus

Next-Generation Energy-Saving System

The "ECO suite plus" retains the concept of achieving both high machining accuracy stability and energy savings (less carbon dioxide emissions) achieved by the Thermo-Friendly Concept and the "ECO suite" that was put into practical use in 2014. It is an energy-saving system with enhanced high-accuracy/-productive functionality and advanced eco-friendly support.

45% less
carbon dioxide emissionsby using Power Regeneration,
Thermo-Friendly Concept
for cold starts, and ECO suite plus

[Calculations]

MB-5000HⅡ 50% utilization (8 hr/da, 20 da/mo, 1 yr)

Assuming 50% of setup and standby time with ECO Idling Stop.
Workpiece : Aluminum casing
Average load : 30% rating
Warm-up : 2 hr/da

Calculated from measured regenerative power

Click here to watch the
Green-Smart machine video

4 solutions only Okuma can provide

1Reducing energy during machining

Intelligent Technology Thermo-Friendly Concept

Both stable accuracy and reduction of carbon dioxide emissions

The workpiece machining accuracy changes significantly due to machine ambient temperatures, heat generated from in-machine components and cutting. The idea behind Okuma's Thermo-Friendly Concept is simply “accepting” these temperature changes so that high accuracy can be achieved in normal factory environments without requiring special customer preparations. Maintaining excellent accuracy stability is possible without relying on excessive ambient temperature control from machine cooling systems and factory air conditioners.

Daily warm-ups, dimensional compensations 68→3 min Yearly: 0.2 t-CO2/unit Less

Shorter warm-up and
dimensional compensation times.

[LB3000 EX Ⅱ compared to previous models]

Temperature: ±2℃ ±5℃ Yearly: 41 t-CO2/unit Less

High accuracy stability even at 1/3 less air
conditioning electricity.

[Estimates: machine shop with 4 machines installed]

Column coolers: 3 0 units Yearly: 13 t-CO2/unit Less

Outstanding dimensional stability without machine coolers

[DCMC actual data: 8℃ ambient temperature change]

Click here for more on the
Thermo-Friendly Concept

Power Regeneration System

Using regenerative power during deceleration eliminates energy wasteStandard on spindles and feed axes

Wasting no energy by regenerating decelerating power—previously discarded.

[Calculations]

MB-5000HⅡ 50% utilization (8 hr/da, 20 da/mo, 1 yr)

Workpiece : Aluminum casing
Average load : 30% rating

Calculated from measured regenerated power

ECO Hydraulics (option)

Highly efficient hydraulic power pack reduces power consumption

Conventional hydraulic unit: MB-4000H actual data:
840 W

ECO Hydraulics: 25min^-1
260 W

[Pressurized]

Highly efficient hydraulic pump, Servomotor, Pressure sensor

2Stopping unnecessary equipment

ECO Idling Stop

Ensure accuracy and actively turn off unnecessary peripherals

All auxiliary equipment when not needed (most of factory power consumption), can be turned off.
The ECO Idling Stop button enables diligent idle stop operations even during machining and maintenance work.
The cooling system necessary for maintaining accuracy uses Thermo-Friendly Concept technology, and the machine itself decides when to cool and stop idling while maintaining high accuracy.
With ECO suite plus, the machine automatically detects the operating status, eliminating the need to push buttons while reducing carbon dioxide emission as much as possible without operator awareness.

The machine monitors the cooling level when not machining, and proactively turns off the cooler while maintaining high accuracy conditions. — The machine monitors the cooling level when not machining,
and proactively turns off the cooler while maintaining high accuracy conditions.

[Calculations]

MB-5000HⅡ 50% utilization (8 hr/da, 20 da/mo, 1 yr)

Assuming 50% of setup and standby time used ECO Idling Stop.
Workpiece : Aluminum casing
Average load : 30% rating

Calculated from measured regenerative power

ECO Operation (option)

Peripheral equipment runs only when needed

By using only the required peripherals (chip conveyor, mist collector), energy-saving operations that also maintain high productivity are possible.
ECO suite plus enables more detailed tuning of operations to thoroughly support carbon dioxide emission reduction activities that do not reduce productivity.