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A Tractor for Use in Any Farm Field and in Any Weather
—Providing Business Farmers*1 with the Chance to Improve Soil Quality

In the 2000s, Kubota’s proprietary half-crawler tractor—the Power Crawler—brought new strength to the increasingly large-scale farms of business farmers.

Japanese agriculture reached a huge turning point in the 2000s. With the number of those leaving the industry rapidly increasing, the abandoned farmland was handed over to business farmers, such as individuals, corporations, and owners of community farms. As a result, the number of large-scale farms grew at an unprecedented speed. The future of Japanese agriculture and food was in their hands. These farms, however, were faced with entirely new issues. One pressing issue was to improve the quality of the soil in order to produce even higher quality crops.

農地の集約化により大規模化したほ場
The size of farm fields increased with the integration of farmland
Compared to wheeled tractors, Power Crawlers increased the area of ground contact, lowering tread stress and limiting damage to soil

Seeking to respond to the needs of these large-scale farmers, agricultural machinery manufacturers everywhere were pouring their efforts into the development of crawler tractors.*2 Kubota, however, was cautious—it understood that in addition to increased weight, crawlers could dig into the ground and damage farm fields when turning. The company continued its research, however, developing various prototypes and testing them out on farmers’ fields. During the process, Kubota came up with a groundbreaking idea—a half-crawler tractor with wheels at the front and triangular crawlers at the back. Not only would this help to ensure the tractor was lightweight, it would also allow for the same turning performance as wheeled tractors. The triangular crawlers were an original Kubota idea, too. By positioning the drive shaft at the top of the triangle, a larger area of the crawlers would be in contact with the ground, which in turn would ensure less soil damage. After repeated demonstrations, Kubota released the revolutionary Power Crawler in 1997. The Power Crawler contributed to solving the issues of business farmers and achieved huge popularity. While wheeled tractors struggled to work on muddy fields and rice paddies after rain or snow, the Power Crawler was unaffected by weather conditions, enabling systematic farm work. Further, with an increased area of ground contact, the Power Crawler caused little damage to soil, and helped to create well-aired, well-draining soil that facilitated the production of stable, high-quality crops. In 2004, Kubota released a high-speed model that could achieve speeds on par with wheeled tractors, drastically shortening moving times. In 2008, Kubota expanded its Power Crawler line-up to include models that ranged from 13.5 horsepower to 135 horsepower. Even today, the Power Crawler continues to evolve, with larger, higher-power models contributing to enhanced productivity.

湿ったほ場での「パワクロ」(左)とホイール型の走行実験風景。パワクロは湿度の高いほ場でもスムーズに走行できる
A demonstration comparing a Power Crawler (left) and a wheeled tractor on a wet field. Power Crawlers can run smoothly even on wet ground.

Although the Power Crawler was originally developed for dry-field farming, Kubota sought to improve the machine so that it could also be used on rice paddies. The company thus took the Power Crawler to the rice paddies of Niigata, a major rice-producing region, where it collected feedback from local farmers who had been watching the test runs. This feedback was communicated to Kubota’s development departments and made a huge contribution to the launch of the Power Crawler for rice paddies. Listening to farmers’ opinions, and developing and improving products alongside them to overcome their issues—this was Kubota at its best.

notes
  • *1A unique term in agricultural policy referring to full-time/part-time farmers, corporations, and others that are driving regional agriculture forward.
  • *2Tractors with rubber crawlers.
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