ナミテイ List of Products and Services

※Automotive World Nagoya 2025 Exhibition Content We make it possible to create parts that were difficult with conventional press processing by utilizing irregular shapes. With a high degree of freedom in shape, we offer optimal proposals tailored to customer needs from the design stage. 【Examples of processing made possible by our technology】 　Thickness and shape: High design freedom in cross-sectional shape allows for lightweight parts and strength optimization. 　Grooves and uneven shapes: Uniform and high-precision grooves and complex three-dimensional shapes can be formed in one piece. 　Composite R shapes: Smooth curves and continuous complex curvatures can be handled freely. 　Notch shapes: Notches can also be accommodated without cutting. Additionally, the new press parts enable waste-free production by pursuing manufacturing efficiency from the design stage. Specifically, the following effects can be expected: 【Environmentally friendly and efficient manufacturing process】 　(1) Shortening of manufacturing processes 　(2) Reduction of material waste 　(3) Reduction of labor and effort 　(4) Minimization of energy consumption

• Other Auto Parts

※Automotive World Nagoya 2025 Exhibition Content This is a unique solution that utilizes cold forging technology with irregular wire materials to create complex shapes with high precision. It can accommodate both iron-based and copper-based materials, achieving a transition from pressing and cutting methods. We have a proven track record across a wide range of industries, from automotive parts to construction and building materials. 【Capabilities of Irregular Forged Parts】 - Achieves near-net shape, reducing machining and labor costs (cutting-free parts) - Realizes shapes that are difficult to produce with pressing (press alternative parts) - High strength and durability through plastic processing → Example: Parts stronger than those produced by sintering can be manufactured (sintering alternative parts) - Simultaneously achieves cost reduction and quality stabilization through method changes (VA parts or high value-added parts) 【Processing Example】 Cutting of irregular wire → End face correction → C chamfering → Precision adjustment → Completion

• Other Auto Parts

※Automotive World Nagoya 2025 Exhibition Content Our unique shearing technology allows for continuous and high-precision cutting from irregular coils. The flatness of the cutting surface is excellent, and the occurrence of warping and burrs is extremely low, which means that in some cases, the cut pieces can be used directly as components. 【What Fine Cut Can Achieve】 　◆ Process Simplification: Due to the superior flatness of the cutting surface, post-processing (barreling, machining) can be omitted or made more efficient. 　◆ Continuous Production: High mass production capability through continuous cutting from coils. 　◆ Dimensional Accuracy: 　　　　　　　　- Minimal warping results in high length accuracy. 　　　　　　　　- High length accuracy enables stable unit weights. *Examples of use: Slag, weights, etc. 　◆ Method Switching: Achieves switching to fine cut for sintered parts, pressed parts, and former parts. *Alternative parts for sintering and pressing. 　◆ Environmental Consideration: By achieving omissions and efficiency through process simplification, continuous production, and method switching, we can engage in environmentally conscious manufacturing.

• Other Auto Parts

Since the 2000s, we have established a track record in mass production technology and quality control in the field of terminals for EV relays. We offer two types of manufacturing methods: (1) A combination of cold forging and machining (2) Cold forging only (without machining) We can propose optimal process designs tailored to shape, quality, and quantity. Leveraging our experience with EV relay terminals, we believe we can also expand into the following industrial equipment and energy sectors. ◆ Proposal Examples 【Industrial Equipment and Infrastructure】 High-power motor control for machine tools, injection molding machines, and presses, as well as UPS and DC power supply systems. 【Renewable Energy】 DC cut relays for solar power generation systems and power conversion units for wind power generation. 【Power Supply Infrastructure】 Distribution boards and backup power for data centers, battery energy storage systems (BESS). We believe that the know-how we have gained from manufacturing terminals that withstand "high voltage and high current environments" required in the EV market can also be utilized in the industrial and energy infrastructure sectors.

• Terminal Blocks

In order to mass-produce copper components implemented in the base, we propose improvements in "material yield," "reduction of mold costs," "quality stability," and "productivity enhancement" by processing special-shaped wire as the material. (1) Improvement of material yield - In the pressing process, scrap is generated around the product, but by processing special-shaped wire as the material, it is possible to significantly reduce scrap. (2) No need for progressive molds as parts can be mass-produced through cutting and bending processes - If short-length cuts are used, cutting blades can be employed, and for bending, processing can be done with bending jigs, thus reducing initial investments such as progressive molds. (3) Quality stability - Continuous processing of already precisely finished special-shaped wire alleviates variations in each shot. (4) Productivity enhancement - By using long special-shaped wire (500-1,000 kg) as the material, continuous productivity is improved. *Regarding the processing steps for components combined with special-shaped wire (cutting, pressing, forming, bending), we would like to determine this through discussions with the customer, our company, or partners. *For more details, please feel free to contact us.

• Processing Contract

By utilizing irregularly shaped wire, we can make parts that were difficult to achieve with conventional press processing possible. With high design flexibility, we provide optimal proposals tailored to our customers' needs from the design stage. 【Examples of processing made possible by our technology】 1. Groove processing: Stable formation of uniform and high-precision grooves. 2. Uneven surface processing: Capable of handling complex three-dimensional shapes in a single formation. 3. Compound R processing and round R processing: Freely accommodating gentle curves and complex curvatures continuously. 4. Free design of thickness and width shapes: High design flexibility for cross-sectional shapes enables lightweighting and strength optimization of parts. 5. Compatibility with difficult materials: Capable of processing high-hardness materials and special steels that are considered challenging. Additionally, new press parts enable waste-free production by pursuing manufacturing efficiency from the design stage. Specifically, the following effects can be expected: 【Environmentally friendly and efficient manufacturing process】 1. Shortening of manufacturing processes. 2. Reduction of material waste. 3. Reduction of labor and effort. 4. Minimization of energy consumption.

• Engine parts

By using "near-net shape" irregular coils that are pre-processed into shapes close to the final product, rather than using general materials like circles, squares, or hexagons, production can be carried out continuously. This enables a reduction in processing steps and allows for labor-saving and efficiency improvements, leading to a more efficient and smarter way of working.

• Steel

At Namitei, we propose product specifications that match our processing characteristics while leveraging the applications and functions of our products, aiming for cost-effective manufacturing. Please feel free to consult us from the design stage. When producing parts like those shown in the diagram from expensive materials such as heat-resistant stainless steel or titanium, there was a problem where approximately 80% material loss occurred due to punching from standard sheet materials. In response, we proposed "creating flat coil components from irregular wire." We manufactured flat coil components from trapezoidal irregular wire with a thick outer side. After processing, the cross-section deformed flat with the outer diameter side stretching. If the specifications of the assumed case are followed, an improvement in yield of about 50% can be expected. [Assumed case using alloy titanium material] ■ Ring component: Thickness 3mm × Diameter 280mm ■ Sheet material: Thickness 3mm × 300mm × 300mm ■ Material mass 1.2kg (specific gravity 7.9) ■ Material loss = 1.0kg *For more details, please refer to the PDF document or feel free to contact us.

• Wiring materials

This is a unique solution that uses cold forging technology with irregularly shaped materials to create complex shapes with high precision. It is compatible with both iron-based and copper-based materials, enabling a transition from pressing and cutting methods. There are achievements in a wide range of industries, from automotive parts to construction and building materials. 【Capabilities of Irregularly Shaped Forged Parts】 - Achieves near-net shape, reducing machining and labor costs (cutting-free parts) - Realizes shapes that are difficult to produce with pressing (press alternative parts) - High strength and durability through plastic processing * Parts with greater strength than those produced by sintering can be manufactured (sintering alternative parts) - Simultaneously achieves cost reduction and quality stabilization through method changes.

• Transmission parts

Our unique shear technology allows for the continuous and high-precision cutting of irregular coils. The proprietary method "Fine Cut" offers excellent flatness of the cut surface, with minimal occurrence of burrs and deformation, enabling some cases to be used directly as components. 【Capabilities of Fine Cut】 ◆ Process Simplification Due to the excellent flatness of the cut surface, it is possible to omit or reduce subsequent processing (such as barreling and machining). ◆ Continuous Production High mass production capability is achieved by continuously cutting from coils. ◆ Dimensional Accuracy - Minimal deformation leads to high length accuracy. - High length accuracy ensures stable weight per piece. *Examples of use: Slag, weights, etc. ◆ Method Switching Enables the switching of sintered parts, pressed parts, and former parts to Fine Cut. *Sintered alternative parts, pressed alternative parts. ◆ Environmental Consideration By achieving simplification and labor-saving through process omission, continuous production, and method switching, we can engage in environmentally friendly manufacturing.

• Other machine elements

General enamel wire (round cross-section) has a filling factor of about 40%, and flat wire has a filling factor of 50-60%. However, ultra-deformed wire has been developed to achieve over 80%. By gradually changing the thickness and width of the flat cross-section without altering the cross-sectional area, it is a special shaped wire that changes its cross-sectional shape along its length. When this wire is wound onto a stator core, a tapered stator coil is completed. When this stator coil is placed in a motor, it fills the gaps between the stator cores, making it possible to achieve a high filling factor. It is also possible to reduce the gaps between the stator coils and apply it to miniaturization, depending on the design. This is a new magnet wire that contributes to the development of high-performance motors with high output, high efficiency, compact size, and lightweight! ● For winding processing, initial samples are available. *Depends on coil specifications. ● For insulation coating, initial samples are available. *Depends on coating specifications. *For more details, please refer to the related links or feel free to contact us.

• Winding Machine

【What is a Special-Shaped Wire】 It is a wire product that has been processed into various shapes according to customer requirements, rather than the typical cross-sectional shapes like round, square, or hexagonal. By incorporating functionality into the material itself, it can accommodate applications that conventional round or square wires cannot. 【What Can Be Achieved with Special-Shaped Wire】 ◆ Optimal Design 1. Switching Construction Methods - Bringing the cross-section closer to the final product, reducing machining and labor (such as eliminating cutting) - Achieving shapes that are difficult to realize with pressing (press alternative parts) - Manufacturing parts with higher strength than sintered parts (sintering alternative parts) 2. Weight Reduction - Reducing cross-sectional area to achieve lightweight design 3. Increased Surface Area - Expanding surface area in the longitudinal direction, improving heat dissipation, adhesion, and strength 4. Control of Surface Properties - Achieving anti-slip, adhesion, vibration absorption, and heat dissipation effects through surface roughening or uneven processing ◆ Productivity 1. Mass Production Capability - Improving efficiency through continuous production from special-shaped coils 2. Near-Net Shape - Bringing the material closer to the final shape at the material stage, achieving process simplification and labor reduction ◆ Environmental Consideration - By reducing waste through free design and high production efficiency, and achieving process simplification and labor-saving, environmentally friendly manufacturing is made possible.

• Steel

Our company is engaged in the development and manufacturing of "copper products for EVs" utilizing our manufacturing technology for shaped wire, including busbar materials with irregular cross-sections and press-processed components for mounting. We can vary the thickness and side shapes, allowing for highly flexible designs such as undulating shapes, asymmetrical shapes, and hollowing, enabling us to accommodate processing tailored to customer needs. We also provide long coils suitable for continuous production, as well as the manufacturing of terminals, iron cores, contact pieces, and contacts for high-capacity circuit breakers. [Examples of developed products] ■ Busbar materials for bending ■ Copper components for mounting ■ EV relay-related components *For more details, please refer to the introduction materials available for download in PDF format. Feel free to contact us with any inquiries.

• Contract manufacturing

By applying our core technology of shaped wire drawing to non-ferrous materials, we can achieve high functionality in electronic components. The "high capacity" of EVs and "lightweighting" through the replacement with aluminum parts, along with the use of shaped wires that closely match the component shapes, enable the production of non-ferrous parts with high yield. You can view materials introducing examples of processing shaped metal parts such as heat sinks, EV relays, busbars, and shafts by downloading the PDF. [Contents] ◎ Heat Sink ◎ EV Relay ◎ Busbar ◎ Shaft ◎ Iron Core ◎ Spacer ◎ Armature ◎ Cam ◎ Latch *Please feel free to contact us with any inquiries.

• Contract manufacturing

By utilizing our expertise in "special-shaped wires" technology with functional materials, we are collaborating on the development of new components (materials). For EV components, which are advancing in capacity, we propose new methods for enhancing performance, reducing weight, improving heat dissipation, and increasing packing density. By applying "special-shaped wires" to improve the performance of busbars, terminals, heat sinks, and magnetic coils, we can offer suggestions for new development products. [Functional Material Image] Copper, aluminum, electromagnetic soft iron, etc. [Application Image] Busbars, terminals, iron cores, vanes, heat sinks, stators, torque sensors, magnetic shields, etc.

• Other electronic parts

Our company specializes in the production of "shaped wire" by processing coil materials through wire drawing and rolling to achieve the desired cross-sectional shape. In addition to enabling lightweight wire and providing anti-slip performance, we can reduce subsequent processes such as cutting and forging, leading to improved yield and reduced processing costs. We also manufacture functional wire materials such as hollow shaped wire and perform shaped cutting with minimal burrs and sagging. 【Features】 ■ Reduces costs in subsequent processes with shapes close to the final product ■ Accommodates various shapes including uneven surfaces, curves, and asymmetrical types ■ Suitable processing for multiple fields such as construction materials, automotive, civil engineering, and home appliances ■ Supports delivery forms such as aligned winding, carrier removal, and bar bundling *For more details, please refer to the materials available for download in PDF format. Feel free to contact us with any inquiries.

• Other metal materials

"Shape forging" offers cost advantages by approximating the final shape of parts at the material stage, allowing for the omission and simplification of cutting and forging processes, as well as improving yield. Additionally, compared to other methods, it enhances strength by utilizing toughness and improves quality in terms of precision and surface characteristics. While there are constraints on the freedom of shape due to processing characteristics, we will propose specifications according to the application and function. [Advantages of Shape Forging] ■ Omission and labor-saving of the pressing process ■ Improved yield ■ Increased strength *For more details, please refer to the PDF materials or feel free to contact us.

• Wiring materials

At Namitei, while leveraging the applications and functions of our products, we propose product specifications that match our processing characteristics, aiming for cost-effective manufacturing. Please feel free to consult us from the design stage. We are a wire product manufacturer and conduct integrated production up to the component level. In applications such as heat exchange pipes using hollow shaped drawn wire, we propose new parts materials for pipe-in-pipe applications. *For more details, please refer to the PDF materials or feel free to contact us.

• Wiring materials

Our company is committed to "modern manufacturing," starting with the production of nails and evolving through various transformations, including the production of copper shaped wires, growing alongside the times. We manufacture a variety of shaped wires with different cross-sectional shapes, as well as related components. Based on the manufacturing technology of shaped wires that we have cultivated over many years, we cater to a wide range of needs, from everyday life-related fields such as automotive, construction, civil engineering, home appliances, and plants, to global and cutting-edge areas like submarine cables.

• Wiring materials

Namitai's parts and components are active in various fields, from global products to everyday items. The required shapes, strengths, and precisions vary greatly. Based on a unique design philosophy from irregular wire, we respond to diverse needs. For a certain automotive parts manufacturer, when producing parts from expensive materials, the challenge was that conventional punching from standard sheet materials resulted in about 80% material loss. [Customer's Challenges and Issues] ■ Improving yield of high-grade steel parts ■ Conventional methods → When producing parts like the one shown from expensive materials, conventional punching from standard sheet materials results in about 80% material loss... <Example case using high-grade steel> - Ring component: Thickness 3mm × Diameter 280mm - Sheet material: Thickness 3mm × 300mm × 300mm - Material mass: 1.2kg (specific gravity 7.9) - Material loss = 1.0kg *For more details, please refer to the PDF document or feel free to contact us.

• Other Auto Parts

An article about our "Optical Fiber Protection Specialty Wire for Undersea Cables" has been published in the Industrial Economic Newspaper! In the midst of the recession known as "Iron Cold" in 1984, when our company was still called "Naniwa Seikui," we received an order from a steel trading company in Tokyo requesting, "Please make a fan-shaped specialty wire by splitting a pipe into three vertically." A few days later, President Murao was surprised when he saw the drawings that arrived. It was the first order for a fan-shaped iron wire, and on top of that, they requested a tolerance of within plus or minus five thousandths of a millimeter. At that time in the industry, a tolerance of about one-tenth of a millimeter was the norm, and they were demanding an unprecedented level of precision, with a length of 1000 meters as well. The delivery date was specified for just two weeks later. * The full text is available at the link below. * For more details, please refer to the PDF document or feel free to contact us.

• Wiring materials

At Namitei, we handle optical fiber communication cables that can reliably transmit high-speed, large-capacity information without leaking to the outside. The "Optical Fiber Protection Special Wire for Submarine Cables" is a product designed to protect the core optical fiber. It not only withstands high water pressure of up to 8000 meters in depth and 800 atmospheres, but also prevents cable cuts caused by ship anchors, fishing nets, and sharks. In the event of an accident on the seabed, it prevents seawater from entering the cable within 100 meters! 【Features】 ■ For submarine cables ■ Withstands high water pressure of up to 8000 meters in depth and 800 atmospheres ■ Prevents cable cuts caused by ship anchors, fishing nets, and sharks ■ In the event of an accident on the seabed, prevents seawater from entering the cable within 100 meters *For more details, please refer to the PDF document or feel free to contact us.

• Wiring materials

Namitei specializes in the production of shaped coil wire using coil wire materials, and has produced a large number of shaped wires for automotive parts as well as for plants and civil engineering. Recently, in the automotive industry, "weight reduction" has become an important improvement theme as the industry moves towards electrification due to environmental issues. In this context, our company is working on the development of hollow shaped wires using pipe coil materials. Although the material costs increase by switching to pipe coil materials, the weight reduction offsets this increase, resulting in cases where we have successfully achieved weight reduction at nearly the same price depending on the specifications. Additionally, beyond weight reduction, products have also been commercialized using shaped core materials for lance (cutting rods).

• Vehicle body parts

Our company has been producing copper terminal components for EVs for over 10 years, and we have established a quality assurance system that includes a production system utilizing cold forging formers and machining, as well as complete inspection, cleaning, and vacuum packaging. Furthermore, we can also manufacture irregular terminals using our specialty in irregular wire, allowing us to broadly meet the increasing demand for copper terminals and components due to the rise of EVs. 【Features】 ■ Over 10 years of manufacturing know-how for iron cores and contacts ■ Introduction of high-performance cold forging formers ■ Realization of machining-free copper terminal components ■ Cost-effective solutions available ■ High-quality assurance system in place due to vacuum packaging ■ Capability to manufacture irregular shapes

• Other terminal blocks