Expanding Environment-friendly Products and Services

The Kubota Group is contributing to resolving global issues by expanding its environment-friendly products and services. We are working on initiatives that consider the entire value chain, from procurement of raw materials to product disposal.

Environmental Considerations in the Product Life Cycle

The Kubota Group handles a diverse range of products, from agricultural and construction machinery to pipe systems and water treatment equipment. Since each product lifecycle has a different rate and scale of environmental load generation, it is important to employ an approach to reducing the environmental load appropriate to the characteristics of each product.

Environmental Consideration in Construction Machinery

Photo:Compact excavator KX040-4 SeriesCompact excavator KX040-4 Series

Construction machinery contributes to the development of social infrastructure, such as roads and water supply systems. The Kubota Group, as a leading manufacturer of small construction machinery, is engaged in initiatives to reduce environmental load during use of its products, such as the Kubota’s unique approach to reduce fuel consumption, as well as ensuring compliance with emissions regulations and improving the maintenance performance to prolong product life.

Reducing Fuel Consumption by Employing Kubota’s Unique Hydraulic System and Energy-saving Engine

For the compact excavators KX040-4 Series, Kubota has reduced fuel consumption during use by 20% compared to conventional models, by employing Kubota’s unique hydraulic system and energy-saving engine.

Comparison of fuel consumption per work unit

Graph:Comparison of fuel consumption per work unit

(1) Kubota’s unique hydraulic system

Equipped with the “eco PLUS” function to perform optimal hydraulic control according to the work load, this hydraulic system helps to reduce fuel consumption.

(2) Energy-saving engine

The downsized* engine with a direct-injection combustion system helps to reduce fuel consumption.
 * With reduced displacement volume (2.2 liter →1.8 liter) and reduced number of cylinders (4 cylinders → 3 cylinders)

Making Exhaust Gas Cleaner to Comply with The Latest Exhaust Gas Regulations

Kubota’s engines comply with the latest exhaust gas regulations (Tier4) in North America.

Improving The Maintenance Performance of The Engine Peripheral Area

For the engine peripheral area, the one-side maintenance structure is adopted to make daily inspection and maintenance easier, thereby preventing occurrence of failure, with the aim of contributing to the extension of the product life.

Photo:One-side maintenance structure
One-side maintenance structure
(The structure enables visual check of the portions requiring inspection and maintenance operations from the opening of the rear hood.)

VoiceAiming to achieve both the development of social infrastructure and conservation of global environment

Since its production start in 1974, the Kubota Group’s compact excavators have undergone improvement of its workability to respond to the customer needs and optimization of the vehicle size, and have been used widely not only in Japan but also overseas, contributing the development of social infrastructure. Recent years, we have been working hard especially to improve environmental friendliness and safety.

In terms of environmental friendliness, we have achieved the reduction of environmental load and the improved work efficiency at the same time, through adopting energy-saving features such as the hydraulic system with improved efficiency and downsized engine, as well as the extended life of consumable parts.

Additionally, improved operability and easiness in maintenance, along with the locking system for all operation levers and other features make it easier for ordinary operators to use and work safely.

We will continue to provide our customers with products that achieve both the development of social infrastructure and conservation of global environment.

Photo:Teruo KunizawaKubota Construction Machinery Engineering Department for Excavator
Teruo Kunizawa

Environmental Consideration in Small Wastewater Treatment Units

A wastewater treatment unit is the equipment to purify residential sewage, and used mainly in medium to small-sized cities. Since it requires installation of efficient and appropriate sewage treatment facility for each household, a small-sized unit, which can be easily installed in a limited space, is needed. The Kubota Group is working on downsizing of wastewater treatment units, thereby saving labor for construction.

Downsizing of Wastewater Treatment Units, thereby Saving Labor for Construction

Kubota has developed a compact wastewater treatment unit KZ-type, by employing carrier that can retain many microbes to improve the treatment performance per unit volume. This product is lighter and requires reduced volume of excavation for installation, contributing to the labor saving for construction work and the reduction of waste soil generated.

Perspective diagram of compact wastewater treatment unit KZ-type and high-performance carrierPerspective diagram of compact wastewater treatment unit KZ-type and high-performance carrier

Downsizing of wastewater treatment unit KZ-typeDownsizing of wastewater treatment unit KZ-type

Comparison of excavation volume* in construction

*Excavation volume is calculated based on the internal calculation standard.

Comparison of weight of small wastewater treatment units

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