岩井工機 Product Lineup

At Iwai Koki, we support the machining of various parts used in infrastructure facilities. Focusing on lathe and machining processes, we can flexibly handle projects that often have limited options, including large parts, large-diameter work, flange-type components, repair parts, and replacement parts. Whether it's single items or small lots, as well as ongoing projects, we can assist from the design stage through to the consideration of machining methods and processes. Our system is well-suited for projects that require quality, delivery, and responsiveness, such as regular repairs, parts updates, and securing new outsourcing partners. 【For these concerns】 - Limited options for machining infrastructure equipment parts - Looking for partner companies to request repair and replacement parts - Want to consult about machining parts like flanges and rings - There are procurement risks with existing outsourcing partners - Want to increase the number of machining partners for ongoing requests 【Usage scenarios】 - Updating existing parts - Regular repairs - Sudden replacement responses 【Benefits of implementation】 - Stable operation of equipment - Shortened delivery times - Cost reduction

• lathe

At Iwai Koki, we primarily focus on lathe processing and machining, catering to both continuous orders and regular orders for machining. We can handle not only single items and small lots but also repeat items that require a stable quantity each month, with an emphasis on quality stability, delivery management, and continuous supply. Our services are also suitable for customers looking for medium-lot projects that fall between mass production and prototypes, as well as those seeking long-term stable partners. We support manufacturing based on drawings, as well as process considerations, confirmation of machining feasibility, and consultations during the estimation phase, helping to alleviate concerns regarding continuous procurement. 【For these kinds of issues】 - Looking for a machining partner that can accept regular orders - Want a partner that can reliably meet monthly quantity needs - Need continuous supply while minimizing quality variations - Searching for a way to distribute the load of existing outsourcing partners - Looking for a machining company to build a long-term relationship with rather than one-off projects

• lathe

In the construction industry, issues such as delivery delays and unstable supply can arise in the procurement of heavy machinery and construction equipment parts. Particularly during disasters or when orders concentrate on specific partner factories, there is a risk that delays in parts supply can lead to overall project delays. Iwai Koki addresses these challenges by utilizing large-scale machining and high-strength welding technology. 【Usage Scenarios】 - Second sourcing as a BCP measure - Supplementing capacity shortages at main factories - Procurement of small-lot parts with special specifications 【Effects of Implementation】 - Diversification of delivery risk - Realization of stable parts supply - Reduction of procurement costs

• Processing Contract

In the plant industry, the reliability and durability of valves are essential for the safe operation of the entire plant. Valves used in high-temperature and high-pressure environments require careful material selection and precise machining. Inappropriate materials or processing can lead to leaks or damage, potentially resulting in plant shutdowns or accidents. Our products have extensive processing experience with not only iron, aluminum, and stainless steel but also special materials such as castings and brass. We own large turning centers with a maximum diameter of φ1,600 and five-axis machining centers, enabling us to handle the complex shapes unique to castings and achieve high-precision finishes for brass components all in-house. [Usage Scenarios] - Updating valve components in plant equipment - Replacing aging valve components - Manufacturing valve components from special materials (castings, brass) [Benefits of Implementation] - Shortened procurement lead times - Reduced management workload - Stable supply of high-quality valve components

• Processing Contract

At Iwai Koki, we handle the machining of various parts used in turbine and compressor applications. Focusing on lathe and machining processes, we can flexibly respond to projects that often have limited options, such as large parts, large-diameter workpieces, flange-type components, repair parts, and replacement parts. Whether it's single items or small lots, we can manufacture based on drawings and are open to consultations from the stage of considering processing methods and processes. We have a system suitable for projects that require quality, delivery time, and responsiveness, such as regular repairs, parts updates, and securing new outsourcing partners. 【For such concerns】 - Limited options for machining turbine and compressor parts - Looking for partner companies to request repair and replacement parts - Want to consult about machining parts like flanges and rings - Procurement risks exist with only existing outsourcing partners - Want to increase the number of machining partners for ongoing requests 【Usage scenarios】 - Updating existing parts - Regular repairs - Sudden replacement responses 【Benefits of implementation】 - Stable operation of equipment - Shortened delivery times - Cost reduction

• lathe

At Iwai Koki, we handle the machining of large parts, repair parts, and replacement parts used in steelmaking equipment and related facilities. We are flexible in our approach, capable of accommodating everything from single items and small lots to ongoing projects, primarily focusing on lathe processing and machining. In the steelmaking sector, many parts are directly linked to the maintenance of equipment operation, making reliable machining and delivery times crucial. Our company not only processes based on drawings but also responds to inquiries considering machining methods and processes, providing proposals tailored to actual conditions. We meet various procurement needs, including replacement parts, repair parts, and the consideration of new outsourcing partners. 【For these concerns】 - There are few machining sources available for repair parts for steelmaking equipment. - Looking for a partner company that can handle large parts and heavy items. - Want to arrange replacement parts with a short lead time. - Existing outsourcing partners are limited, and there is a desire to diversify risks. - Seeking a machining partner for ongoing consultations. 【Usage scenarios】 - Updating large parts for steelmaking plants. - Repairing damaged parts. - Regular maintenance. 【Benefits of implementation】 - Reduction of equipment downtime. - Optimization of parts procurement costs. - Establishment of a stable production system.

• lathe

In the power generation industry, turbines require high durability and precision. In particular, components used in high-temperature and high-pressure environments necessitate careful material selection and precise machining. The processing of special materials requires specialized technology and equipment. Our large lathe machining addresses these challenges and contributes to the maintenance of turbine performance. 【Application Scenes】 - Turbine blades - Turbine casings - Generator components 【Effects of Implementation】 - Increased turbine longevity through the supply of high-quality parts - Improved design flexibility by accommodating complex shapes - Enhanced power generation efficiency due to high precision

• Processing Contract

At Iwai Koki, we handle the machining of repair parts, replacement parts, and large components used in waste incineration facilities and related equipment. We can flexibly accommodate everything from single-item production to small lots and ongoing projects, primarily focusing on lathe and machining processes. In waste incineration facilities, there are many replacement parts needed for regular maintenance and equipment upkeep, making timely delivery, stable quality, and the presence of a reliable outsourcing partner essential. Our company not only processes based on drawings but also responds to inquiries regarding machining methods and processes, providing practical proposals tailored to equipment operation. You can also utilize our services for repair support and the selection of new partner companies. 【For these kinds of issues】 - Limited options for machining parts for waste incineration facilities - Want to increase the number of outsourcing partners for repair and replacement parts - Need a machining partner that can respond according to the timing of equipment repairs - Want to discuss large components or single-item machining - Looking for a partner company for ongoing requests 【Benefits of implementation】 - Cost reduction through decreased frequency of parts replacement - Increased reliability through high-quality parts machining

• lathe

At Iwai Koki, we handle the processing of various metal parts used in printing machines and industrial printing equipment. Focusing on lathe processing and machining, we can manufacture a wide range of components, including mechanical parts that make up the equipment, mounting parts, repair parts, and replacement parts. We flexibly accommodate everything from single-item prototypes to small lots and ongoing projects, supporting our customers' manufacturing with a system that emphasizes stable quality, timely delivery, and continuous supply. We not only manufacture based on drawings but also contribute to solving procurement challenges for equipment manufacturers by discussing processing methods and procedures during the estimation stage. 【For such concerns】 - Looking for a processing partner that can continuously handle parts for printing machines. - Want to stabilize the quality of equipment parts. - Need a partner company that can consult from prototype to mass production transition. - Want to secure a load distribution partner for existing outsourcing. - Want to arrange repair parts and replacement parts on a short delivery schedule.

• lathe

Iwai Koki handles the machining of large parts, repair parts, and replacement parts used in hydroelectric power generation equipment. We can flexibly accommodate single-item production, small lots, and ongoing repair projects, primarily focusing on lathe and machining processes. In hydroelectric power generation, the procurement of parts associated with regular maintenance and aging updates is crucial, requiring compatibility with existing equipment and stable quality. Our company not only processes based on provided drawings but also offers consultations that include machining methods and processes, providing production proposals tailored to actual operations. This is suitable for companies considering repair support or securing new partner companies. 【For these concerns】 - There are few machining sources to consult for repair parts for hydroelectric power generation equipment. - Looking for partner companies that can handle large parts and replacement parts. - Need a machining source that can reliably respond to regular maintenance. - Want to consult about parts production tailored to existing equipment. - Would like flexible responses even for single items or small lots. 【Usage scenarios】 - Updating turbine parts for hydroelectric power plants. - Replacing parts during regular maintenance. - Responding to unexpected part failures. - Reviewing parts machining. 【Benefits of implementation】 - Maintaining and improving power generation efficiency. - Achieving stable power supply. - Reducing repair periods through shorter delivery times.

• lathe

In the shipbuilding industry, the stable supply of parts that require high precision is crucial. Particularly for components related to safety, such as hull structural members and engine parts, accuracy in dimensions and strength is essential. Improper machining or welding can lead to a decline in the ship's performance or even accidents. Our company possesses large turning centers, various NC lathes, and machining centers, enabling us to carry out integrated production of large, high-strength parts through turning and welding. With 50 years of experience and a strict quality control system, we support the resolution of challenges in the procurement of shipbuilding components. 【Usage Scenarios】 - Machining of hull structural members - Manufacturing of engine parts - Production of specially specified parts 【Benefits of Implementation】 - Stable supply of high-precision parts - Reduced lead times and cost savings - Risk diversification as a BCP measure

• Processing Contract

Iwai Koki handles the machining of large parts, repair parts, and flange-related components used in power generation turbines. We can flexibly accommodate single-item production, small lots, replacement parts, and ongoing projects, primarily focusing on lathe and machining processes. In the field of power generation equipment, not only quality but also delivery times and stable responsiveness are required for the renewal of existing parts, regular maintenance, and unexpected replacements. Our company responds not only to machining based on provided drawings but also engages from the consultation stage, including machining methods and processes, to offer realistic production proposals. Companies looking for new outsourcing partners or cooperative factories, as well as those wishing to reassess their machining sources for turbine-related parts, are encouraged to consult with us.

• lathe

In the water treatment industry, pumps require high durability and precise operation. Especially for pump components exposed to corrosive fluids and high-pressure environments, the selection of materials and precision machining significantly affect the product's lifespan and performance. Inappropriate materials or processing can lead to early failure or performance degradation. Our products have extensive experience in processing special materials such as cast iron, aluminum, stainless steel, and brass. We own large turning centers with a maximum diameter of 1,600 mm and 5-axis machining centers, allowing us to handle complex shapes unique to castings and achieve high-precision finishing of brass components in-house. 【Application Scenarios】 - Updating discontinued pump components - Manufacturing pump parts used in corrosive environments - Producing pump components that require high precision 【Benefits of Implementation】 - Reduction in procurement lead time and management workload - Stable supply of high-quality parts - Maintenance of pump performance and extension of lifespan

• Processing Contract

"I can't predict delivery times due to the dual management of welding contractors and processing contractors." "I urgently need a spare for a large part that only exists in physical form without any drawings." Iwai Koki will solve these pressing issues on-site. Based in Chiba, our company possesses a well-equipped facility with large turning centers up to φ1,600 and 5-axis machining centers. Our greatest feature is our ability to carry out everything from the fabrication of welded structures to subsequent high-precision machining and even painting, all in a "fully in-house integrated" manner. This reduces intermediate transportation costs and management man-hours due to division of labor, significantly shortening the total delivery time. With distortion removal and precision finishing that captures the design intent, we can also consolidate quality responsibility. Additionally, we excel in restoration manufacturing through "sketching and drafting from actual parts," which is essential for maintaining aging equipment, thus resolving procurement difficulties caused by the loss of drawings. We have extensive processing experience with not only iron, aluminum, and stainless steel but also special materials such as castings and brass. We deliver quickly and safely to the Chiba, Ibaraki, Kanagawa, and Tokyo areas using our own trucks. We passionately and sincerely bring to life "small-lot custom products" from major machinery manufacturers and plant contractors. Companies with procurement concerns are encouraged to reach out to Iwai Koki!

• Processing Contract

"While keeping costs down with welded structures, we want to achieve high precision tolerances on the reference surfaces through machining." Are you looking for a partner to realize such design philosophy? Iwai Koki combines the skilled technology cultivated over half a century with the latest equipment, such as 5-axis machining centers and large turning centers (up to φ1,600mm). We specialize in prototype projects for industrial machinery and automation device frames, chambers, and large brackets, focusing on "small lot production of various types with short delivery times." With us, you can advance from complex welded shapes to subsequent reference setting and precise drilling all in-house, allowing us to respond flexibly to sudden corrections due to design changes and strict geometric tolerance requirements. We can handle various materials, including aluminum, stainless steel, and castings. We also have processing capabilities for lengths up to 1,000mm, making us particularly adept at "large and complex custom products" that other companies may decline. For manufacturers in the Chiba, Ibaraki, Kanagawa, and Tokyo areas, we can offer flexible delivery options using our own transportation. We provide enthusiastic and sincere support from initial lots before mass production to development projects requiring technical consultation. To accelerate your development speed, please make use of Iwai Koki.

• Processing Contract

"Orders are concentrated on existing partner factories, increasing delivery risks." "We want to distribute orders for small-lot parts with special specifications to reliable local vendors." Iwai Koki responds to these challenges in the purchasing and procurement departments with solid technology. Based in Chiba, our company possesses numerous large turning centers, various NC lathes, and machining centers. We specialize in the lathe processing of "large and high-strength" parts used in heavy machinery and construction equipment, as well as integrated production from welding. With a stable management foundation that has been in place for over 50 years and a strict self-inspection system by our quality control department, we meet the stringent audit standards of major manufacturers. We are utilized by many customers as a strong second source to mitigate risks during disasters (BCP measures) or to supplement capacity shortages at primary factories. In addition to iron and high-tensile steel, we have extensive processing experience with castings and stainless steel, and we can finish complex optional parts and custom-made products in the prototype stage in a short delivery time. Our regionally focused delivery system using our own trucks (Chiba, Ibaraki, Kanagawa, Tokyo) contributes to reducing transportation costs and improving delivery accuracy. We resolve purchasing managers' "procurement anxieties" with our supply capabilities and stability.

• Processing Contract

"I want to perform additional processing on large cast parts, but I'm worried about voids and distortions during processing, and I can't find a subcontractor." "I would like to have custom sizes exceeding φ1,000 in non-ferrous metals like brass finished in a short delivery time." Are there any parts that are difficult to procure due to the barriers of material properties and size? Iwai Koki has extensive processing experience not only with iron, aluminum, and stainless steel but also with special materials like castings and brass. We own large turning centers with a maximum diameter of φ1,600, 5-axis machining centers, and even vertical spindle rotary surface grinders. We have established a system that can handle complex shapes unique to castings and high-precision finishing of brass parts all in one company. In particular, our "drawing-less manufacturing," where we take in worn-out old parts and create new ones from there, is highly valued by sites struggling with updates for discontinued pump and valve parts. We can provide rapid delivery via our own transport in the Chiba, Ibaraki, Kanagawa, and Tokyo areas. By consolidating the points of contact from material procurement to turning, milling, and grinding, we dramatically reduce your procurement lead time and management workload. For challenging cases of "material × size" that other companies have turned down, please consult with us, a company with 50 years of experience.

• Processing Contract

"Lathe work is done by Company A, welding by Company B, and finishing grinding by Company C..." Are you struggling to manage multiple subcontractors for a single part, dealing with the transportation costs and delays that arise each time? For large parts that require a variety of processes, Iwai Koki's "process-integrated production" demonstrates its power. We complete everything from large lathe machining to high-strength welding and final surface grinding in our own factory. This completely eliminates "waiting time" and "transportation risks" between processes, achieving an overwhelming reduction in total lead time. In particular, precise machining that considers thermal distortion after welding is an area that requires years of experience. With us, our manufacturing and welding departments work closely together to finish with the optimal processing sequence, making it possible to handle large brackets and motor bases with strict geometric tolerances. Additionally, we own our own transportation (1t to 4t vehicles), allowing us to safely and reliably deliver to nearby areas in Chiba, Ibaraki, Kanagawa, and Tokyo immediately after processing is completed. By consolidating your points of contact with us, your manufacturing managers and purchasing personnel will be freed from the complexities of progress management. We will smoothly complete "large and cumbersome jobs that require multiple processes" with our equipment capabilities and teamwork.

• Processing Contract