田中信鉄工所 List of Products and Services

At Tanaka Nobutetsukōjo Co., Ltd., we manufacture a variety of products related to railway components (track-related parts). Our forging characteristics vary depending on the size and shape of the products, but we specialize in forging through free forging processes using hammers and hydraulic presses, followed by die forging. Additionally, our competitive press machines utilize friction presses (screw presses), allowing us to accommodate not only mass production but also small lot production of various types. By employing these manufacturing methods, we aim to enhance the forging ratio, a characteristic of forging, and challenge ourselves in producing products for various industries. For more details, please contact us or refer to our catalog.

• Processing Contract
• Contract manufacturing

The 700t forged product "iron sleeper" from Tanaka Nobutetsu Co., Ltd. undergoes incoming inspection after the material is received, followed by hole drilling and heating forging at four locations. One out of every 40 pieces is inspected, and then the iron sleeper undergoes bending with a hydraulic press at both ends, cold bending work, final inspection, and packaging, before being shipped nationwide in dedicated JR freight containers. For more details, please contact us or refer to the catalog.

• Processing Contract
• Contract manufacturing

At Tanaka Shintekko Co., Ltd., our forged products, "Backward Extrusion Forgings," allow for a reduction in the machining process from raw materials (round steel). The advantages include forgings with no taper on the inner and outer diameters, at a 0-degree angle. The shape is cup-shaped. Currently, the dimensions we have achieved are an outer diameter of φ80 to 120mm, a total length of 125 to 225mm, an inner diameter of φ61 to 85mm, and an inner depth of 70 to 190mm. The materials we currently use are S45C and SCM435. In the future, we will challenge ourselves to achieve maximum and minimum dimensions for outer diameter, inner diameter, total length, and inner depth beyond our current specifications. We will also take on challenges for shapes other than round for the outer and inner diameters, as well as for materials with unique characteristics. For more details, please contact us or refer to our catalog.

• Processing Contract
• Contract manufacturing

The forging technology "hook manufacturing process" of Tanaka Nobutetsu Co., Ltd. involves heating the material, followed by tip elongation forging and bending forging of the hook. After the bending forging, the mold for die forging is replaced, and the rough forged hook is reheated. The die forging includes burr removal, and it is completed with tap forging to meet the needs of our clients. After forging, the process includes distortion removal, shot blasting, G coating, inspection, and shipping. For more details, please contact us or refer to our catalog.

• Processing Contract
• Contract manufacturing

The forging characteristics of Tanaka Nobutetsukōjo Co., Ltd. depend on the size and shape of the products, but they specialize in forging through free forging processes using hammers and hydraulic presses, followed by die forging. Additionally, Tanaka Nobutetsukōjo's competitive press machines utilize friction presses (screw presses), allowing them to accommodate not only mass production but also small lot production of various types. By employing such manufacturing methods, they aim to enhance the forging ratio, a characteristic of forging, and challenge themselves in producing products for various industries. For more details, please contact us or refer to our catalog.

• Processing Contract
• Contract manufacturing