Komatsu Corporate History & Strategy

Entering the 1950s, orders for U.S. military ammunition began to dwindle, and Komatsu was forced into a fundamental transformation of its revenue structure. The company depended on ammunition for 72% of its revenue, and by around 1955, the contraction of ammunition demand following the end of the Korean War had become certain. A decline in utilization rates was feared at the Osaka plant, the primary facility for ammunition production, and securing an alternative mass-production product became an urgent management issue. Securities analysts at the time described it as 'a dangerous business that rises and falls depending on the U.S. military,' and market confidence was also declining.

Meanwhile, since completing the D50 bulldozer in 1947, Komatsu had been introducing new models virtually every year—D80, D30, D120, and D40—and by 1954, cumulative production had surpassed 1,000 units. Additionally, the Japanese government had formulated the 'Five-Year Road Development Plan,' with full-scale public works including road and dam construction anticipated. The expansion of public works would increase demand for mechanization at construction sites, and demand for construction machinery including bulldozers was projected to grow.

In May 1956, Komatsu decided to convert the Osaka plant's primary production from 'ammunition for the U.S. military' to 'bulldozers.' Production facilities previously used for ammunition manufacturing were reorganized for bulldozer mass production, and the Osaka plant was developed as a dedicated bulldozer mass production facility. By leveraging production know-how for multiple models that had already been developed, the aim was to establish mass production systems in a short timeframe. This decision marked Komatsu's break from ammunition dependence and its full-scale transformation into a construction machinery manufacturer.

In building the mass production system, the bulldozer development and prototyping track record accumulated since 1947 served as a critical foundation. The technical knowledge cultivated through the design and manufacturing of multiple models from the D50 to the D40, along with mass production experience at the Awazu plant, enabled the rapid establishment of production lines at the Osaka plant. Metalworking techniques developed through ammunition manufacturing were also transferable to construction machinery component production, and the mass production system was built by retrofitting existing production equipment. New product development continued in parallel, with the D250 bulldozer introduced to market in 1959, among other efforts to expand the product lineup.

As a result of these efforts, supported by the full-scale implementation of the government's Five-Year Road Development Plan and growing construction machinery demand driven by dam construction, Komatsu recorded revenue of 9.2 billion yen and profit exceeding 700 million yen for the December 1959 fiscal period—both all-time highs since founding. Construction machinery came to account for approximately 70% of total production, and the revenue structure that had depended on ammunition for 72% of revenue just three years earlier was transformed into a business centered on construction machinery.

The rapid completion of this business transformation was underpinned by approximately 10 years of accumulated bulldozer development experience prior to the transformation decision. Rather than first seeking new businesses after ammunition demand disappeared, the continuous development investment since 1947 was already in a state ready for immediate utilization at the time the mass production decision was made, supporting both the speed and certainty of the transformation. Through this transformation, Komatsu established the foundation as Japan's top construction machinery manufacturer, forming the starting point for its competition with Caterpillar in the 1960s.

In 1960, the Japanese government published the 'Capital Liberalization Guidelines,' explicitly setting forth a policy of phased deregulation by industry to allow foreign companies to enter the Japanese market. The postwar Japanese government had policy-restricted entry of Western companies into Japan for the purpose of nurturing and protecting domestic firms, limiting foreign relationships to technical partnerships and the like. The Capital Liberalization Guidelines charted a path for foreign companies to establish Japanese subsidiaries for direct market entry, meaning that Japanese companies would be exposed to global competition. A sense of crisis spread rapidly among industry executives.

In response to capital liberalization, Caterpillar, the world's largest construction equipment manufacturer, decided to enter the Japanese market. Around 1961, Caterpillar executives visited Japan and indicated their intention to establish a 50-50 joint venture with Shin-Mitsubishi Heavy Industries. In 1963, Caterpillar Mitsubishi was established, and in 1965, the 'CAT D4D Bulldozer, Domestically Produced Unit No. 1' was introduced. Both Caterpillar and Mitsubishi Heavy Industries commanded enormous capital, and the combined competitive strength of Mitsubishi Heavy Industries' capital base posed a serious threat to Komatsu. Moreover, at the time, the durability hours of Komatsu's bulldozers were reportedly about half that of Caterpillar machines.

Komatsu's President Yoshinari Kawai protested to MITI (Ministry of International Trade and Industry) against the approval to establish Caterpillar Mitsubishi, seeking a postponement of capital liberalization in the construction machinery industry. However, MITI did not budge from its position that 'the interests of Japan as a whole take priority over those of individual companies,' and permitted Caterpillar's entry into Japan through a joint venture structure. President Kawai judged that political obstruction was not feasible and decided to focus the counterstrategy squarely on 'quality improvement.' Since the domestic sales network and production system were already in place and not at a disadvantage, he concluded that quality alone was the key to defense.

As quality improvement measures, company-wide quality control (QC) and the 'Maru-A Countermeasure' were implemented. The quality control office established 8 investigation items, including review of complaint records from the past year, overhaul performance surveys comparing company products with competitors, and dispatching engineers to construction sites nationwide to survey usage conditions. The investigation identified issues in 3,200 of 4,000 parts—80% of the total. Concurrently, in 1961, a technology licensing agreement for diesel engines was concluded with U.S.-based Cummins, and the introduction of high-performance engines was pushed through over internal opposition.

In September 1963, the bulldozer 'D50A' incorporating the Maru-A Countermeasure improvements was launched for sale. By improving quality at the component level, particularly addressing issues with special steels, the number of complaints was reduced to one-fifth of the previous level. In parallel with quality improvement, aggressive capital investment in existing plants was pursued, with 12 billion yen invested from 1960 to 1964 and 50 billion yen from 1969 to 1970. A system was built that specialized production at specific plants for each bulldozer model, achieving both quality and production efficiency.

Throughout the 1960s and 1970s, Komatsu maintained a domestic market share of 60 to 65% in bulldozer sales. Competitor Caterpillar Mitsubishi's share hovered around 30%, remaining at roughly the same level Mitsubishi had held before the joint venture was formed. Third-place and lower players such as Nittoku Kinzoku and Hitachi saw their shares decline, and a duopoly structure of Komatsu and Caterpillar Mitsubishi was formed. The quality improvement efforts initiated by the Maru-A Countermeasure became the foundation for Komatsu to maintain its leading position in the domestic construction machinery market.

Throughout the 1960s, technological innovation in hydraulic equipment advanced, and a structural shift was underway in the construction machinery market, with the leading product transitioning from bulldozers to hydraulic excavators. From the 1950s through the 1960s, demand was centered on large-scale civil engineering projects such as new road construction and dam building, and bulldozers suited for grading work dominated the construction machinery market. However, from the 1970s onward, construction related to the improvement and maintenance of social infrastructure—such as sewer installation and road repair—increased, and demand for hydraulic excavators with superior digging capabilities rose rapidly.

In the hydraulic excavator market, early entrants such as Caterpillar Mitsubishi and Hitachi Construction Machinery had already introduced products and were developing the market, creating entry barriers for latecomers. Although Komatsu had secured over 60% domestic share in bulldozers, it held a late-entrant position in hydraulic excavators. As the demand structure of the construction machinery market shifted from bulldozers to excavators, whether Komatsu could secure market share in hydraulic excavators was recognized as a critical management issue that would determine the company's medium- to long-term competitiveness in the construction equipment industry.

For its entry into hydraulic excavators, Komatsu executed a technology licensing agreement with U.S.-based Bucyrus-Erie. Using the company's hydraulic excavator technology as a foundation, development commenced on products adapted to the soil conditions and working requirements of Japanese construction sites. In May 1968, production of the hydraulic excavator '15-H' began, and the product was brought to market through the nationwide direct sales network built through bulldozer sales. Starting in pursuit of early entrants Caterpillar Mitsubishi and Hitachi Construction Machinery, Komatsu's domestic share in the entry year of 1969 stood at a third-place 14%.

The turning point for Komatsu's significant expansion of domestic hydraulic excavator share was the improved model '15HT-2,' developed and introduced in 1972. Substantially improved durability compared to the previous product led to increased inquiries from construction sites. Komatsu's domestic sales locations numbered 650, significantly exceeding Caterpillar Mitsubishi's 200 and Hitachi Construction Machinery's 350. Because the customer base for bulldozers and hydraulic excavators overlapped, the existing direct sales network functioned effectively as-is for expanding hydraulic excavator sales.

In 1976, Komatsu captured the top domestic market share in hydraulic excavators. Despite entering approximately 10 years behind the early movers, the combination of product development capabilities through the technology licensing agreement with Bucyrus-Erie and the leverage of the nationwide 650-location direct sales network built through bulldozer sales proved effective. Share expansion accelerated particularly after the introduction of the durability-improved '15HT-2,' reaching 21% domestic share by 1979 and 32% by 1987. Hydraulic excavators became established as Komatsu's mainstay product after bulldozers.

With the capture of the top domestic position in hydraulic excavators, Komatsu became the only construction equipment manufacturer holding top domestic market share in both bulldozers and hydraulic excavators. At construction sites, bulk procurement from a single manufacturer is rational from maintenance and parts procurement perspectives, and leading positions in both products created a structure where sales mutually reinforced each other. Using this business foundation as a base, Komatsu advanced overseas expansion and product lineup expansion from the 1980s onward, scaling up to become the world's second-largest construction equipment manufacturer after Caterpillar.