THK Co., Ltd. is a leading manufacturer of mechanical components in Japan and globally, specializing in the research, development, manufacturing, and sales of linear motion systems, praised as the global "Pioneer of Linear Motion Guides". The company was founded on April 10, 1971, in Meguro Ward, Tokyo, Japan, with its initial name being Toho Seiko Co., Ltd.. The THK Group has approximately 13,000 employees globally, including 4,016 employees in the single entity, with registered capital of approximately 34.6 billion yen, and is listed on the Main Board of the Tokyo Stock Exchange.
The brand name "THK" carries the company's core values: Toughness (Resilience), High Quality (Superior Quality) and Know-how (Technical Expertise). With creative concepts and proprietary technology, THK was the first in the world to research, develop, and commercialize a rolling-contact linear motion system once considered unsolvable. Its LM roller guide devices have now become indispensable core components in precision machinery and electronic systems across various industries such as machine tools, semiconductor manufacturing equipment, industrial robots, and medical devices.
THK's development history is a legend about technological innovation and global expansion. From its inception, THK embarked on an innovative path of "realizing linear motion through rolling contact" and gradually established a global R&D, production, and sales network.
In 1971, Hiroshi Teramachi founded Toho Seiko Co., Ltd. in Meguro Ward, Tokyo, beginning the sales of machine tool components and LM rollers. In 1972, THK achieved a historic breakthrough, becoming the first company in the world to successfully develop a method for realizing linear motion through rolling contact, and began commercializing production and sales of linear motion guides. Thereafter, the company continuously expanded its local capacity, establishing its first complete LM roller guide production plant, the Kofu Factory, in 1977.
In the 1980s, THK embarked on its global journey. Based on the belief that "good technology can cross boundaries", the company established THK America Inc. in the United States in 1981, and set up THK Europe in Germany the following year, laying the foundation for its international sales network.At the same time, domestic production bases in Japan continued to expand, with factories in Gifu, Mie, and Yamaguchi established successively between 1984 and 1985.
In the 1990s, THK achieved a major upgrade in product technology. In 1996, the company launched the groundbreaking "Ball Retainer Type LM Roller Guide", which features significant advantages such as ultra-high speed operation, low noise, low dust emission, and no need for frequent maintenance, greatly enhancing product performance.In 2000, THK was listed on the First Section of the Tokyo Stock Exchange. To meet global market demand, THK successively established production and sales bases in the United States, France, China, and other places, forming a global production and sales system integrating Japan, the Americas, Europe, and Asia.
In the 21st century, THK continued to advance its global layout, taking China as a key strategic market. It established a sales base in Shanghai in 2003 and established manufacturing companies in Dalian, Wuxi, and other places in China in 2005.In recent years, THK has frequently acted in emerging markets, such as setting up a new factory in Sri City, India in 2021, and further establishing a logistics center in 2025, strengthening its radiation capabilities in Southeast Asian and African markets.The current Group Chairman is Akira Teramachi (the founder's eldest son). The third-generation management team has successfully passed the baton, achieving a smooth inheritance of the family enterprise.
THK's product system focuses on "Linear Motion Systems", with a wide variety of products and specifications widely used in various industrial fields, mainly including the following categories:
LM Roller Guide: THK's flagship product, also the first product globally to put linear rolling components into practical application. Through ball retainer technology, it can achieve ultra-high speed motion with high precision, high rigidity, energy saving, and long life.For different application scenarios, THK has also developed SNR and SNS series linear guides for road and off-road vehicles, suitable for scenarios such as tail lifters and heavy earthmoving equipment.
Ball Screws: Suitable for occasions requiring precise control of position or movement speed, such as machine tool CNC systems, printing machinery, etc. In 2024, THK launched the high-performance HBN series ball screws, whose load capacity is twice the industry average, with a maximum operating speed of up to 130,000DN.
Ball Splines, Spherical Rod Ends, Cross Roller Rings: These unique mechanical components, together with LM guides, constitute THK's rich basic product matrix.
Mechatronics Products: Including linear actuators, XY tables, electric actuators, etc., combining mechanical components with electronic control technology.
Special Application Products: Such as "enemo" variable flux hub motors, active suspension systems, Stealth Seat-Slide Systems (SLES), etc. It is worth mentioning that THK also uses its core technology to produce Seismic Isolation Devices, applied in the construction field to protect personnel and property from earthquake threats.
THK's products almost cover all manufacturing fields — from machine tools, machining centers, semiconductor manufacturing equipment, and industrial robots, to medical devices, LCD production lines, to railway passenger cars, entertainment facilities, and even large optical infrared telescopes, THK products are present everywhere.
2025 was a year full of challenges and strategic transformation for THK. Affected by multiple factors such as weak global manufacturing demand, US tariff policies, and internal business restructuring within the company, THK's financial performance presents a complex situation.
In the first three quarters of fiscal year 2025, THK's consolidated revenue increased by 1.2% year-on-year to 268.227 billion yen, but consolidated operating profit fell sharply by 24.7% to 9.728 billion yen, and net profit plummeted by 42.8% to 5.254 billion yen.Due to orders falling below expectations and restructuring costs, THK revised down its full-year financial forecast.Looking at the full year, continuing operations generated revenue of 240.4 billion yen, an increase of 7.9% year-on-year, but operating profit decreased by 9.3% to 14.4 billion yen.
From the perspective of regional markets, performance differentiation is obvious:
Chinese Market performance was the most outstanding, with revenue surging by 21.8% to 55.763 billion yen, and operating profit increasing by 29.1% to 6.766 billion yen, becoming the main engine of group growth;
Japanese Market revenue decreased slightly by 1.9% to 80.416 billion yen, but operating profit plummeted by 56.9%;
Americas Market revenue decreased by 7.0% to 66.477 billion yen, and operating profit dropped significantly by 37.5%;
European Market revenue decreased by 5.1% to 50.140 billion yen, and fell into an operating loss.
The most significant change comes from business restructuring: Starting from fiscal year 2025, THK has reclassified its automotive and transportation businesses under its subsidiary as "Discontinued Operations", which resulted in a significant net loss of approximately 69.9 billion yen attributable to owners of the parent company.Despite this, the company maintains strong cash reserves (120.5 billion yen) and announced a significant increase in annual dividends to 246 yen per share.For fiscal year 2026, THK management expects the profitability of continuing operations to rebound, predicting revenue will reach 260 billion yen, and operating profit will increase significantly to 26 billion yen, demonstrating the management team's confidence in the recovery of core businesses.
THK's technological barriers are rooted in its profound accumulation in the field of Rolling and Connection Technology. Its core competitiveness can be summarized into three pillars:
LM Roller Guide Technology: THK is the first company in the world to commercialize rolling-contact linear motion, solving technical difficulties regarding friction, precision, and lifespan.Its unique Ball Retainer Technology is THK's core competitiveness — through ball retainers, eliminating contact and friction between balls, it not only achieves extremely low rolling resistance and noise levels (rolling resistance reduced by 90% and noise reduced by 50% or more compared to traditional equipment), but also raises service life and maintenance-free performance to unprecedented levels.
High-performance Ball Screw Technology: THK's ball screws feature high precision, high load, and high speed. For example, the HBN series ball screws have load capacity far exceeding the average, and combined with the QZ Lubrication System, they can significantly extend maintenance intervals.
Mechatronics and Innovative System Integration: THK combines core mechanical components with electronic control, IoT, cloud computing, and AI digital technologies, proposing the "Mechatroedge" concept, providing high-value-added solutions to customers beyond traditional hardware.For example, its developed "enemo" variable flux hub motor uses the mechanical principle of ball splines/screws to switch between high-torque drive and high-speed drive; "ALCS" active suspension achieves vehicle height adjustment and stable control through ball screws.
THK adheres to the globalization policy of "Where there is demand is the best place to set up a factory", and has established a "Unified Manufacturer-Retailer System" in four key geographic regions: Japan, the Americas, Europe, and Asia, committed to deploying its manufacturing and sales network in major global markets.
In China, THK was one of the first Japanese component giants to layout. In 2005, THK Group's headquarters in China — THK (China) Investment Co., Ltd. — was established in Dalian, with registered capital of 320 million USD.Currently, THK has manufacturing plants in Dalian, Wuxi, Changzhou, and other places, and possesses nearly 30 sales outlets nationwide.In 2010, THK further established the group's first overseas R&D center in Dalian, reflecting the high importance placed on the Chinese market.
In India, THK opened a new factory in the Sri City Industrial Park in November 2021. In December 2025, THK further established a logistics center within the factory. The facility is strategically located, not only strengthening domestic supply in India but also serving as an export hub for THK to radiate to Europe, Southeast Asia, and the rapidly growing African markets.Additionally, THK has production or business facilities in the United States, France, the Czech Republic, Germany, Thailand, and other places certified by environmental management systems (such as ISO14001).
THK's future strategic focus is shifting from traditional automotive parts business to industrial automation, robotics, and intelligent manufacturing driven by artificial intelligence.
First, thoroughly promote "Comprehensive Globalization" and market expansion. THK will seize the market growth opportunities of factory automation in developing countries, while expanding its user base in developed countries, firmly capturing demand in emerging markets and developed countries by upgrading and expanding its global sales network.
Second, vigorously develop new business areas, focusing on high-value-added solutions. THK has established three professional departments: the Automotive and Transportation Business Unit responsible for the expansion of transportation equipment-related products; the Amenity Creation Engineering (ACE) Division responsible for seismic isolation and shock absorption systems to protect people's lives and property; and the Innovative Mechatronics Technology (IMT) Division committed to expanding single products, electric actuator business, and robots.In addition, THK is accelerating the expansion of emerging application areas such as medical devices, aerospace, and renewable energy.
Third, embrace AI and digital transformation to transform business models. Against the commercial opportunities brought by progress in the Internet of Things (IoT), THK will thoroughly utilize IoT, cloud computing, AI, and robot technologies to change its business operations and promote the further expansion of its business areas.At the beginning of 2026, THK Group announced a new " PMVV" (Purpose, Mission, Vision, Value) statement, making "Revolutionizing the manufacturing world with 'Rolling and Connection Technology'" the new mission, and emphasizing providing solutions that integrate mechanical components with digital connection technologies such as IoT.
Fourth, maintain the spirit of challenge and lead the next generation of mobility. THK Chairman Akira Teramachi foresaw the arrival of the robot era more than twenty years ago. Faced with the tide of tech giants like Tesla shifting their focus to humanoid robots and Apple demanding its supply chain to turn to automation, THK is actively utilizing its profound accumulation in precision motion control to meet this challenge.At the same time, THK demonstrated its technical strength as a component supplier by independently developing "LSR-05" to display electric vehicles, reflecting its vision to break the boundaries of traditional component suppliers and become a Manufacturing and Innovation Services Company.
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