Nakayama Iron Works, Ltd.
Japanese industrial machinery manufacturer founded in 1908, specializing in crushing, screening and environmental recycling plants and equipment.
Last updated September 29, 2026
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Overview
Nakayama Iron Works, Ltd. is a Japanese industrial machinery manufacturer based in Asahimachi, Takeo City, Saga Prefecture. Founded in 1908 by Nakayama Hisaya, the company began by producing gas generators and wheat scourers at a factory in Takeomachi, and over more than a century it evolved into a specialist maker of crushing, screening and materials-processing machinery. Its corporate name was formally changed to Nakayama Iron Works, Ltd. in 1964, and the headquarters and main plant were relocated to Asahimachi, Takeo City, in 1962. The company's core business is the design and manufacture of industrial machines for aggregates, quarrying, construction and environmental applications. Its product range includes jaw crushers, single toggle crushers, granulators, crusher screens, feeders, crusher units, suction air separator units, soil remediation attachments and plant design services marketed under the N-Link name. It also develops small-scale hydro power and solar power technology, reflecting a broader interest in energy and environmental engineering. A defining recent development is the Dendoman series, an electric-driven mobile crushing plant concept introduced after the March 2011 earthquake and power blackout in northern Japan. The company describes Dendoman as a machine that can operate using its own power generation, combining battery and diesel generator power to create a self-contained crushing plant. This product line reflects Nakayama Iron Works' stated ambition to build a more independent and resilient business for its next hundred years. Nakayama Iron Works presents itself as an independent manufacturing company with more than 100 years of accumulated credibility and technical skill. It has exported to more than 72 countries and operates offices including a Tokyo branch, an Osaka branch and a second headquarters plant. The company emphasizes long-term trust, in-house technical capability and international reach, and it recruits employees with an interest in working abroad. Its official communications highlight a philosophy of "seeing tomorrow and opening the future," positioning the firm as a challenger in industrial machinery and environmental technology.
History
Nakayama Iron Works, Ltd. traces its origins to 1908, when founder Nakayama Hisaya established a factory at Takeomachi to produce gas generators and wheat scourers. This early product mix reflected the needs of an industrializing Japanese economy and agricultural community, and it set the pattern for a company that would repeatedly adapt its manufacturing to the demands of the era. In 1942 the company manufactured a brake crusher, an early step into crushing machinery. In 1950, second-generation president Nakayama Yasuhiro took over the business. The company began producing single toggle crushers in 1954, a product line that became central to its identity. In 1962 the headquarters and plant were transferred to Asahimachi, Takeo City, Saga Prefecture, where the company remains based. Two years later, in 1964, the company name was formally changed to Nakayama Iron Works, Ltd. The company expanded its commercial footprint in the late 1960s and 1970s. It opened a Tokyo branch and a second headquarters plant (an assembly plant) in 1968. In 1970 it started producing crushing plants for export, marking the beginning of an international business that would eventually reach more than 72 countries. In 1971 it became a member of The Japan Society of Industrial Machinery Manufacturers and was specified as an excellent declaration corporation. In 1973 it obtained permission for a contractor's license for machine and equipment installation work under the Minister of Construction Permit, article 907. The 1980s brought recognition and further technical development. In 1980 the company obtained the Small and Medium Corporation Center Prize. In 1984 it developed a quarry-face giant jaw crusher, and in 1987 it developed a crushing granulator known as the gyropactor. In 1989 it increased capital to 54 million yen and received investment from Osaka Small Business Investment Co., Ltd., increasing capital to 86.5 million yen. In 1990 it opened an Osaka branch, and in 1992 the headquarters building was completed. That same year it exhibited at the Tokyo Environmental Exhibition, beginning a practice of exhibiting every year thereafter. In 1993 it started manufacturing additional products, continuing its diversification into environmental and recycling equipment. A pivotal moment in the company's recent history came after the March 11, 2011 earthquake in northern Japan, which caused severe damage and a massive power blackout. Reflecting on the vulnerability of machinery that becomes "a lump of iron when the power source is cut," Nakayama Iron Works decided that its next hundred years should begin from a point of energy independence. This led to the development of Dendoman, an electric-driven mobile crushing series with a machine concept based on operation by its own power generation. The company combined this with its technology in small-scale hydro power generation and solar power generation, aiming to create a self-contained crushing plant powered by batteries and a diesel generator. Today Nakayama Iron Works describes itself as an independent manufacturing company with more than 100 years of accumulated credibility. It continues to design and produce crushing and screening plants and equipment, plant design services under the N-Link name, and environmental machinery, while pursuing international exhibitions and export markets. Its stated goal is to be a more independent and powerful company providing the products the market requires.
- 2011
After the March 11 earthquake and power blackout, the company conceived Dendoman, an electric-driven mobile crushing series with self-generation.
- 1993
Started manufacturing additional products.
- 1992
Headquarters building completed; exhibited at Tokyo Environmental Exhibition (continued annually thereafter).
- 1990
Opened Osaka branch.
- 1989
Increased capital to 54 million yen; received investment from Osaka Small Business Investment Co., Ltd. and increased capital to 86.5 million yen.
- 1987
Developed crushing granulator gyropactor.
- 1984
Developed quarry-face giant jaw crusher.
- 1980
Obtained Small and Medium Corporation Center Prize.
- 1973
Obtained contractor's license for machine and equipment installation work (Minister of Construction Permit, article 907).
- 1971
Became a member of The Japan Society of Industrial Machinery Manufacturers; specified as excellent declaration corporation.
Products and positioning
Independent Japanese industrial machinery manufacturer with over a century of credibility, specializing in crushing, screening and environmental recycling equipment, and emphasizing self-contained, energy-resilient machinery.
Dendoman Electric-driven Mobile Series
Electric-driven mobile crushing plant concept designed to operate using its own power generation, combining battery and diesel generator power.
N-Link Plant Design
Plant design service offered by Nakayama Iron Works.
Crusher Screen / Feeder
Crushing, screening and feeding equipment for aggregates and quarrying.
Crusher Unit
Integrated crushing unit.
Suction Air Separator Unit
Air separation equipment for materials processing.
Soil Remediation Attachment
Attachment for soil remediation applications.
Effective Micro Hydro System
Small-scale hydro power generation technology.
Sources5 sources
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