Shigenobu Nagamori

Shigenobu Nagamori
	永守重信
	Nagamori in 2010.
Born	1944 (age 82–81); Kyoto Prefecture, Japan
Nationality	Japanese
Citizenship	Japan
Residence	Kyoto, Japan
Education	Polytechnic University (electrical engineering)
Alma mater	Polytechnic University, Japan
Occupation	Business executive, engineer, philanthropist
Years active	1967–present
Employer	Nidec Corporation
Company	Nidec
Organization	Nidec; Nagamori Foundation; Kyoto Sangyo Gakuen
Title	Founder and chairman of Nidec
Board member of	SoftBank (non-executive director)
Known for	Founding Nidec and building the world's largest maker of precision motors; the management doctrine known as Nagamori-ism
Net worth	Multi-billion US dollars
Spouse	Married
Children	2

Shigenobu Nagamori (永守重信; born 1944) is a Japanese engineer and business executive who founded Nidec in 1973 and built it into the largest manufacturer of precision motors in the world. He served as president and chief executive for most of the following five decades and remains chairman.

Nagamori founded the company at the age of 28 with three colleagues in a shed on his mother's property in Kyoto, and pursued a market that established manufacturers considered too small to matter: the miniature brushless motors that spin the platters inside computer hard disk drives. As personal computing and data storage expanded through the 1980s and 1990s, that niche became a very large business, and Nidec came to supply the majority of the world's hard drive spindle motors.

From the 1980s onward he pursued an acquisition strategy of unusual persistence, integrating more than fifty companies including Nidec Sankyo, Nidec Copal, Nidec Tosok, Nidec-Read and the motors and controls business bought from Emerson Electric, which became Nidec Motor Corporation. The group extended from tiny precision motors into industrial motors, automotive components, robotics, machine tools and home appliance motors, on the argument that anything that spins is a market Nidec should be in.

He is as well known in Japan for his management doctrine, referred to as Nagamori-ism, as for the company itself. It rests on what he calls passion, enthusiasm and tenacity, on an insistence that problems are solved by immediate action rather than deliberation, and on hiring and promoting without regard to educational background, career history, age or gender, an unusual position in a country where the university a person attended has conventionally determined the shape of a career.

Nagamori has stated a target of ¥10 trillion, roughly US$91 billion, in annual revenue by 2030, to be reached principally through traction motors for electric vehicles. He is a non-executive director of SoftBank, and has given very large sums to engineering education in Japan, including a reported US$90 million to establish an engineering programme at Kyoto Gakuen University. He handed the chief executive role to Mitsuya Kishida in 2024 after a prolonged and publicly difficult search for a successor.

Background

The electric motor as a business

Electric motors are among the oldest industrial products and, for most of the twentieth century, among the least glamorous. They are made in enormous variety and enormous quantity, they are largely invisible to the end user, and they compete principally on cost, efficiency and reliability rather than on brand.

That combination made them unattractive to the large Japanese electronics companies of the post-war period, which were building consumer brands. It also made them a category in which a specialist could establish a durable position, because the engineering knowledge required is deep, accumulates slowly, and does not transfer easily.

Nagamori's insight was that a motor is a component whose importance is proportional to the precision it must deliver, and that the highest-precision applications were about to multiply.

The hard disk drive

A hard disk drive stores data on rotating platters read by heads flying a few nanometres above the surface. The motor that spins those platters must run at constant high speed, with almost no vibration, generating little heat, in a very small space, for years without failure.

Conventional brushed motors could not meet those requirements. Brushless direct-current motors could, but in the early 1970s they were exotic and expensive.

Nidec committed to brushless motor technology before the market existed. When the personal computer arrived and disk drives began shipping in tens and then hundreds of millions of units a year, the company was one of very few able to supply motors to the necessary tolerance at the necessary price, and it took the dominant share.

Kyoto's manufacturers

Nidec belongs to a distinctive group of Kyoto-based technology manufacturers, alongside Kyocera, Murata, Nintendo, Omron, Rohm and Horiba, which are noted for independence from the Tokyo industrial groups, for focus on components rather than finished goods, for unusually high margins, and for founders who ran their companies for decades.

The pattern is often attributed to Kyoto's distance from the keiretsu networks centred on Tokyo and Osaka, which left its companies to raise capital and win customers on their own terms.

Early life and education

Nagamori was born in 1944 into a farming family in Kyoto Prefecture, the youngest of six children. The family was poor, and accounts of his childhood emphasise both the hardship and his mother's insistence on effort, a theme he has returned to throughout his career.

He showed an early interest in motors, and studied electrical engineering at the Polytechnic University near Tokyo, an institution oriented toward practical technical training rather than academic prestige. His own lack of an elite university background is the stated origin of Nidec's policy of hiring without reference to academic pedigree.

He worked for two engineering firms after graduating, including a period at Teac, before leaving to start his own company.

Nidec

Founding

Nagamori founded Nippon Densan, later Nidec, in Kyoto in July 1973, at the age of 28, with three colleagues. The company began in a small building on family land, and its purpose was research and manufacture of precision motors.

The timing was poor. The first oil crisis struck within months of the founding, and Japanese industrial demand contracted sharply. Nagamori has described the early years as a period in which the company survived by taking work that larger firms declined.

He sought customers abroad from the beginning, on the reasoning that Japanese electronics manufacturers would not buy critical components from an unknown company of four people, while American firms were more willing to judge a supplier on the product. Nidec's first significant orders came from the United States, and the company's early growth was built on American computer manufacturers.

Hard disk drive motors

The decisive commitment was to brushless direct-current spindle motors for hard disk drives.

Nidec developed the technology ahead of volume demand and was positioned when the personal computer market expanded through the 1980s. It became the leading supplier worldwide, at times holding a large majority of the market, and the business funded everything that followed.

The dependence carried an obvious risk, which materialised as hard disk drives were displaced by solid-state storage in personal computers. Nidec's diversification through acquisition was in substantial part a response to it.

Acquisitions

From the 1980s Nagamori pursued acquisitions continuously, integrating more than fifty companies in Japan and abroad.

Among them were Nidec Sankyo, Nidec Copal, Nidec Copal Electronics, Nidec Tosok and Nidec-Read in Japan, and internationally the motors and controls business of Emerson Electric, acquired in 2010 and renamed Nidec Motor Corporation, which took the group into large industrial and appliance motors in North America.

His stated method was to buy underperforming motor and component businesses and apply Nidec's operating practices rather than its capital, and he became known for turning acquisitions to profit quickly, often by attacking fixed costs and decision-making speed rather than by investment. Nidec's integration record was for many years regarded as among the best in Japanese industry.

Not all of it succeeded. The group took substantial write-downs in later years, including on its machine tool and automotive businesses, and an attempted approach to Makino Milling in 2024 and 2025 was resisted, illustrating the limits of the approach in a changed governance environment.

Electric vehicle motors

Nagamori identified traction motors for electric vehicles as the successor to the hard disk drive business and committed heavily to it, developing integrated e-axle units combining motor, inverter and gearbox.

Nidec won substantial volume in China, where electric vehicle adoption moved fastest, and the strategy drove a sharp rise in the share price. It also proved harder than the component businesses the company knew: competition from Chinese suppliers compressed prices, and the automotive division recorded significant losses, contributing to the company's write-downs.

Nagamori's stated objective remains ¥10 trillion in revenue by 2030, principally from this business.

Succession

Nagamori's search for a successor became a subject of public commentary in Japan.

He announced in 2018 that he would remain chief executive while Hiroyuki Yoshimoto took the presidency. A series of candidates followed, several recruited from outside, and several departed or were removed within a short period, with Nagamori resuming executive authority each time.

Mitsuya Kishida, one of five executive vice presidents, became president and chief executive in 2024. Nagamori remains chairman.

The sequence is widely cited as an illustration of the difficulty a dominant founder faces in transferring authority, and Nagamori has acknowledged publicly that succession proved harder than he expected.

Nagamori-ism

The management doctrine associated with Nagamori is taught in Japanese business schools and has been the subject of academic study.

Its stated foundations are passion, enthusiasm and tenacity, and it holds that these matter more to a company's results than talent or credentials. Nagamori has said that ability differs between people by a factor of perhaps five, while motivation differs by a factor of a hundred.

Three practical principles follow.

The first is immediate action. He has argued that a decision taken quickly and corrected is superior to one taken slowly and correctly, on the ground that speed compounds and deliberation does not.

The second is that costs are always reducible. Nidec's turnarounds of acquired companies were built on this, and Nagamori's emphasis on eliminating waste extended to matters as small as the cleanliness of factory floors, which he treated as an indicator of whether an organisation attended to detail.

The third is recruitment without reference to pedigree. Nidec has hired and promoted without regard to the university attended, prior career, age or gender, a position that in Japan is a substantive departure rather than a statement of principle. It follows directly from Nagamori's own background.

His management writing is extensive and has sold widely in Japan.

Philanthropy and education

Nagamori established the Nagamori Foundation to support research and recognition in areas contributing to scientific and industrial development, with an emphasis on power generation, energy efficiency and technologies that reduce the cost of prosperity.

He inaugurated the Nagamori Awards in July 2014 for researchers and engineers working on motor-related technology. Roughly six awards are made annually, with the Grand Nagamori Award carrying about ¥5 million and other awards about ¥2 million. Recipients have included Bulent Sarlioglu of the University of Wisconsin-Madison, Bin Yao of Purdue University, José Antonino-Daviu of the Universitat Politècnica de València and Elena Lomonova of Eindhoven University of Technology.

In 2017 he announced a donation of about US$90 million to establish an engineering research programme at Kyoto Gakuen University, which began in 2020 with 200 undergraduate and 100 graduate students. The institution was subsequently renamed Kyoto Sangyo University of Advanced Science, and Nagamori became its chairman.

His stated purpose in funding engineering education is that Japan produces too few practical engineers and that its universities select for examination performance rather than for the qualities that make an engineer useful, an argument continuous with Nidec's hiring policy.

Other positions and wealth

Nagamori holds about 12 percent of Nidec directly and through his personal asset company, SN Kosan. He is a non-executive director of SoftBank.

He has appeared regularly among the wealthiest people in Japan.

Personal life

Nagamori is married with two children and lives in Kyoto.

He is known for extremely long working hours, having in the company's early years reportedly worked from before dawn until late at night and expected the same of his staff, a practice he later moderated in response to changing Japanese attitudes to working time while continuing to argue for intensity of effort.

Assessment

Nagamori's record rests on two things that are not in dispute: he identified a component market before it existed and held the leading position in it for decades, and he assembled through acquisition the broadest motor business in the world from a company that began with four people in a shed.

The management doctrine is more contested. Its emphasis on effort, speed and cost has produced results that are difficult to argue with, and its rejection of academic pedigree is a genuine and unusual contribution in the Japanese context. Critics note that the same intensity produced a working culture that would not be acceptable elsewhere, and that the doctrine is inseparable from a founder whose personal authority made it enforceable.

The succession difficulties and the losses in the automotive business are the principal qualifications on his later record. Both point to the same question, which is whether a company built around one person's judgment and speed can be run by anyone else.

References

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