History of Sumitomo Excavators
The Sumitomo diversified group, which includes industrial enterprises, trading and financial companies, is one of the largest in Japan. One of the most famous and oldest areas in the activity of Sumitomo is the production of construction equipment.
Sumitomo Crawler Hydraulic Excavators
Sumitomo (S.H.I.) Construction Machinery Manufacturing is the Group's operating company for this activity. The main products of the company at present are hydraulic excavators, of which the company annually produces more than 7,000 units, and equipment for road construction: asphalt pavers, rollers (240 units per year).
The history of the production of construction equipment under the Sumitomo brand begins in 1963, when a corresponding division was created within the Sumitomo Machinery company. A significant starting point was a licensing agreement signed in the same year with the American manufacturer of cranes and earthmoving equipment Link-Belt. A year later, sales of mechanical excavators and truck cranes under the brand Sumitomo - Link-Belt started. Engaged in the modernization of machinery in 1967 and 1970, Sumitomo offers its customers its first hydraulic excavator and crane, respectively. In subsequent years, the Japanese company expanded its production capacity in its homeland and entered the North American market with the support of the Link-Belt distribution network, and then another well-known manufacturer from the United States - Case Corporation. Through the dealer network of the latter company, excavators are also sold in European countries. Products bearing the Sumitomo brand are now sold in North and South America, Africa, Australia, many Asian, Middle Eastern, European countries.
Sumitomo Crawler Hydraulic Excavators
Already by 1992, 50,000 hydraulic excavators were produced at the main Chiba Works plant, opened in 1975 near Tokyo. The 100,000th milestone was already overcome in 2001. In the same year, the division that produces construction equipment was reorganized. The following companies were founded as a result: Sumitomo (S.H.I.) Construction Machinery Co., Ltd., Sumitomo (S.H.I.) Construction Machinery Sales Co., Ltd., Sumitomo (S.H.I.) Construction Machinery Manufacturing Co., Ltd. and Sumitomo Heavy Industries Construction Crane Co., Ltd. In 2003, a subsidiary was established in China to carry out sales and service activities.
Currently, as already mentioned, Sumitomo (S.H.I.) Construction Machinery Manufacturing is engaged in the design and production of excavator and road equipment. The company has a modern production base and a research division that has a testing ground, where new models of equipment and technical solutions are tested under conditions as close as possible to real ones.
For almost the entire range of models, the Japanese company uses the PAX brand, which in Latin looks like PEACE ("peace") and emphasizes the desire to produce cars that are as harmonious as possible with the environment.
Crawler hydraulic excavators are available in two series: PAX and SPINACE. A feature of the second series is a shortened counterweight with zero reach beyond the dimensions of the excavator. This solution makes it possible to work in tight spaces.
The production of cranes is now carried out by Hitachi Sumitomo Heavy Industries Construction Crane (HSC), created on a parity basis in 2002 by Sumitomo and Hitachi. The combination of forces provided HSC with great potential as a result of Hitachi's experience in developing cranes up to 100 tons and Sumitomo, which provided the new company with technology for the construction of heavier machines. The HSC range includes cranes with a maximum lifting capacity of 25 to 350 tons and a boom length of 17 to 96 meters.