大利根精機 List of Products and Services

Our main products are railway vehicle parts, which we supply to domestic JR, private railways, and in overseas markets including the United States, China, and various Asian countries. We ensure that our machining processes continue without interruption, just as commuter trains do not stop. Oritone Seiki Co., Ltd. specializes in the production of precision round-shaped components. If you require precision products with deep grooves or complex machining for round shapes, please consult us. *For more details, you can view our blog through the related links. Feel free to contact us for more information.

Development of motors and inverters that hold the key to EVs. It is believed that mass production is impossible without the development of motors with excellent electrical characteristics, and supporting that manufacturing is our high-quality parts production. As rotating objects generate centrifugal force and become uncontrollable the more they are spun, the roundness, coaxiality, and concentricity at the component stage become crucial. *For more detailed content, please refer to the related links. Feel free to contact us for more information.

We manufacture a component known as a mechanical seal. The mechanical seal emerged around the end of the 19th century. It is a mechanism that seals mechanically to prevent leakage from the rotating shaft that penetrates the pressure vessel (casing) in rotating equipment such as pumps and agitators. Research and development progressed as military technology, but it has rapidly evolved in recent years, spurred by the advancement of various industries, including the chemical industry. It is unfortunate that images cannot be included, but due to its mechanical properties, the nature of the mechanical seal prevents oil and water leaks, which means that the geometric tolerances for aspects such as flatness, parallelism, and perpendicularity of the components are extremely strict. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.

If you are looking for precision machining of round shapes, please consult Ohtone Seiki Co., Ltd. Since our establishment, we have consistently focused on quality and have improved our machining technology by challenging strict precision requirements. Currently, we assist customers from various industries with a wide range of round shapes and precision cutting processes. *For more details, you can view our blog through the related links. Please feel free to contact us for more information.