We specialize in the precision machining of large metal parts, such as bearing components used in wind power generation equipment, construction machinery, and steel rolling mill rollers.
A major bearing manufacturer, impressed by the large-scale parts processing technology cultivated through the manufacturing of plumbing components, took notice of the company's mass production orders. In 2001, the company built a 24-hour mass production factory in Nara Prefecture. Although it experienced a decline in orders during the 2008 Lehman Shock, it increased its customer base through strengthened sales activities and measures to shorten delivery times using its own trucks. With plans for aggressive capital investment, the company is now on a path to renewed growth.

President Kazutoshi Maruyama expressed confidence in his company's technology, stating, "We can manufacture thin-walled parts such as the inner and outer rings of large bearings with high precision and at low cost."
Using a large turning center, they machine ring parts from cylindrical materials, with diameters of over 1 meter and thicknesses of 1.5 mm to 5 mm. They possess unique know-how that allows them to achieve a perfect roundness of less than 0.1 mm even for parts with a diameter of 2 meters.
Furthermore, using a processing method called "cutting out," it is possible to cut multiple parts from the base material, instead of processing them one by one as is normally done, thus reducing the material cost per unit. In addition to iron, they also handle stainless steel and aluminum, and they also produce parts for heavy industry manufacturers.

To create a management system that can respond to fluctuations in orders, the company is also pursuing the development of new fields. They are collaborating with casting and forging manufacturers to propose to major manufacturers the provision of finished parts that integrate multiple processes, and are also taking on orders for single parts, aiming to attract new business and customers. President Maruyama believes that "looking ahead, it's necessary to increase what we can do," and is consciously working on this.
Currently, the company is targeting the aerospace sector. Strategic capital investments are being made, including the introduction of a machining center (MC) capable of processing parts with a diameter of 1,200 mm (twice the size of conventional machines) and a high-precision 3D measuring machine at the Nara factory, and preparations are steadily progressing.

President's Greeting

We provide high-quality products by utilizing our advanced thin-wall machining technology for large, precision parts, while also offering cost advantages through multi-piece material processing. We ensure on-time delivery through thorough delivery management and our own transportation service. We aim to be a company that quickly responds to customer needs and consistently provides valuable products.