原田鉄工所 List of Products and Services

At Harada Iron Works, we have processing experience with various materials such as iron, aluminum, brass, stainless steel, and titanium. We can perform knurling on outer diameters and end faces. We handle everything from blank processing consistently in-house. Please feel free to consult us when you need our services. 【Case Overview】 ■Material: Stainless Steel, End Face: Knurled, Ayame ■Material: Titanium, Outer Circumference: Knurled, Hirame ■Material: Stainless Steel, Outer Circumference: Knurled, Hirame ■Material: Brass, Outer Circumference: Knurled, Hirame *For more details, please refer to the PDF document or feel free to contact us.

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At Harada Iron Works Co., Ltd., we also handle surface treatment after turning processing. We can perform various treatments from heat treatment to plating and surface treatment. We have various achievements in the treatments listed below. 【Heat Treatment】 ■ Carburizing, Gas Nitriding, Quenching 【Plating】 ■ Black Oxide, Hard Chrome, Trivalent Chrome, Electroless Nickel, Zinc 【Surface Treatment】 ■ Anodizing, Phosphating, Manganese Phosphate, Stainless Steel Passive Film 【Coating】 ■ DLC, CrN, TiN *For more details, please refer to the PDF materials or feel free to contact us.

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At Harada Iron Works Co., Ltd., we perform hard turning on high-hardness heat-treated steel. Compared to grinding, there are products that offer advantages in terms of cost and machining accuracy. We have processing experience with materials such as general carbon steel, alloy steel, and martensitic stainless steel. For workpieces with high hardness, we use CBN tools or PCD tools for turning. For lower hardness, we use carbide tools or cermet tools for turning. Turning can achieve a surface roughness of "Rz1.0μ to 2.0μ." If a higher surface roughness is required, we perform burnishing. Please note that mirror finishing may not be possible depending on the material, hardness, and shape; feel free to consult us. *For more details, please do not hesitate to contact us.*

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We would like to introduce some of our processing examples! This time, we are presenting a case of small-diameter deep hole machining produced for the medical device industry. The protrusion is long (L/D=20), making it prone to bending of the machining hole and tool breakage. Based on the processing experience we have cultivated so far, we have achieved 20D deep hole machining through cutting. 【Case Overview】 ■ Application: Medical machine parts ■ Processing: Machined φ1.0×L20mm at 15 locations ■ Material: SUS303 In addition to this, we have numerous manufacturing achievements related to medical device components, and we specialize in small-diameter deep hole machining and complex shape processing using SUS and titanium. *For more details, please feel free to contact us.

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Our ultra-precision mirror finishing technology eliminates the polishing and lapping processes, reducing the number of steps and improving yield, contributing to cost reduction, shorter lead times, and enhanced quality. We have overcome the disadvantages of conventional methods where dimensional control was difficult, and there are no occurrences of scratches that are hard to prevent in grinding processes. To date, we have successfully finished outer diameters from approximately Φ100mm to Φ20mm to Rz0.4μm or below, as well as long materials to Rz1.0μm, and we have numerous examples of processing heat-resistant and corrosion-resistant alloys (HRC43). 【Features】 ■ Proven results of achieving surface roughness of Rz0.4μm or below through turning ■ Processing experience with heat-resistant and corrosion-resistant alloys (HRC43) ■ Capable of finishing without scratches or traverse marks ■ Contributes to shorter lead times and cost reduction through the reduction of process steps *For more details, please feel free to contact us.

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Traditionally, the processing of hexagonal holes in small-scale production involved drilling a pilot hole and then using a hexagonal punch to process the hexagonal hole through pressing. However, this multi-step process led to issues such as long production lead times, high costs, and the need for dedicated jigs. Our company performs hexagonal hole processing using dedicated tools in a consistent production process. Due to the freedom in process design, hexagonal hole processing has become possible in processes that were not feasible before, allowing for reduced production lead times and lower costs through process consolidation, eliminating the need for dedicated jigs. Additionally, there are advantages such as ease of processing thin-walled shapes, which are difficult to achieve with pressing. [Case Study] ■ Issues - Long production lead times, high costs, need for dedicated jigs, etc. ■ Solution - Perform hexagonal hole processing using dedicated tools in a consistent production process. *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce the "turning processing technology" of Harada Iron Works Co., Ltd. We have extensive experience in "turning processing" for small parts (φ42 or less) regardless of material type in small lot production. We also handle high-difficulty and high-precision machining with complex simultaneous processing using B-axis/C-axis/Y-axis and finishing processes on ultra-precision NC lathes with a specification of 0.1μm. 【Features】 ■ Realization of low costs through reduced manufacturing lead times ■ Short delivery times enabled by flexible production ■ Small-diameter deep hole and knurling processing of 6Al4V titanium ■ Mirror surface turning processing that omits polishing, buffing, and lapping 【Production Examples (Partial Excerpt)】 ■ Extraction tools for bone screws ■ Anti-slip processing on the surface of holder grips ■ Production of inspection jigs ■ Trocar and titanium grips for medical catheters ■ Mass production of adapters for dialysis treatment, among others *For more details, please refer to the PDF document or feel free to contact us.

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Harada Iron Works Co., Ltd.'s "Ultra-Precision Mirror Surface Processing Technology" utilizes an original method called 'Polish-Free Turning Finish', which differs from conventional mirror finishing techniques and achieves Rz0.4µm, contributing to cost advantages. This technology eliminates the disadvantages of traditional methods that struggled with dimensional control and prevents the occurrence of scratches that are difficult to avoid with grinding processes. The image shows a polish-free turning finish applied to the "tapered surface" and "end face" of an outer diameter of Φ45mm. The tapered surface is a shape that is challenging to polish or lap, but our company performs polish-free turning finishing using a lathe. Additionally, we can simultaneously finish the taper, outer diameter, and end face, and it is possible to perform polish-free turning finishing even with grooves on the end face. We have numerous achievements in polish-free turning finishing for outer diameter tapered surfaces and end faces. You can rely on us for everything from blank processing to completion. *Please feel free to contact us for more details.

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Our company has been featured in the information magazine "ISICO" vol. 111. At Harada Iron Works, we are utilizing online meeting systems for discussions with remote clients, prompted by the COVID-19 pandemic. By using online meeting apps, we have been able to have direct conversations with field engineers who usually find it difficult to travel, which has led to an acceleration in development. [Featured Content] ■ Difficulties in travel immediately after the first meeting ■ Convenient for sharing documents and discussing prototypes ■ ISICO promotes the specialized technologies of local companies nationwide *For more details, please refer to the PDF document or feel free to contact us.

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We offer grinding-free turning finishing processing for "end faces." The image shows a processed raw material of S45C with an outer diameter of Φ45mm. Grinding-free turning finishing processing is possible even with end face grooves. We have extensive experience in grinding-free turning finishing processing for end faces. Please leave the entire processing of the blank to us. *For more details, please feel free to contact us.

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The image shows a tapered surface with an outer diameter of Φ45mm that has been finished with non-polished turning. The tapered surface is a shape that is difficult to polish or lap. Our company performs non-polished turning finishing on a lathe. We can also finish the taper, outer diameter, and end face simultaneously. We have numerous achievements in non-polished turning finishing on outer diameter tapered surfaces. Please leave the entire process, from blank processing to finishing, to us. *For more details, please feel free to contact us.

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Our company offers a "polish-free turning finishing process" that finishes metal surfaces with turning operations alone, without any polishing or lapping, resulting in scratch-free surfaces. We have numerous examples of successfully finishing outer diameters from approximately Φ100mm to Φ20mm with an Rz of 0.4μm or less, as well as long materials finished to Rz1.0μm. Our ultra-precision mirror surface processing technology eliminates the need for polishing and lapping processes, reducing the number of steps and improving yield, contributing to lower costs, shorter lead times, and enhanced quality. 【Features】 ■ Proven results achieving surface roughness of Rz0.4μm or less through turning ■ Capable of finishing without scratches or traverse marks ■ Contributes to reduced lead times and lower costs through fewer processing steps *For more details, please refer to the "PDF Download" for documentation. If you have concerns about finishing small sizes or processed products, please feel free to contact us.

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Our company offers polishing-free turning finishing for long materials. The image shows a Φ20mm long material processed to a length of 135mm at the center with an Rz of 1.0μm. We have extensive experience in polishing-free turning finishing for long materials. You can rely on us for the entire process, from blank machining to completion. Please feel free to contact us for more details. 【Case Overview】 ■Processed the center part of a Φ20mm long material to a length of 135mm with an Rz of 1.0μm. *For more details, please refer to the PDF document or feel free to contact us.

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The ultra-precision mirror finishing technology of Harada Iron Works Co., Ltd. can achieve Rz0.4µm through turning processes. It is also adopted in medical and medical device applications. This is an original finishing method that differs from conventional mirror finishing techniques such as grinding, electropolishing, chemical polishing, lapping, honing, buffing, blasting, and barrel finishing. It eliminates the disadvantages of traditional methods that had difficulty in dimensional control and prevents the occurrence of scratches that were hard to avoid in grinding processes. In addition to its superiority in quality, there are also cost advantages. *For more details, please refer to the PDF materials or feel free to contact us.*

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Harada Iron Works Co., Ltd. specializes in surface processing and offers various surface treatment proposals tailored to our customers' needs. Are you aware that surface roughness can affect the quality and performance of the product itself? In industrial products, the unevenness of the surface can significantly impact the quality and performance of the product, influencing its value. Therefore, it is essential not only to enhance processing technology but also to inspect product quality and manage the processing process. Surfaces have roughness, characterized by unevenness. Surface roughness is a clear numerical representation of the degree of smoothness or roughness, rather than just visual or tactile assessment. It plays a crucial role in defining the properties of the surface. To quantify the surface's unevenness, we classify it based on the height, depth, and spacing of the irregularities and evaluate the unevenness. Then, we analyze it using predetermined methods and calculate it in industrial units. Differences in the unevenness of the surfaces of parts and materials can affect quality and functionality, ultimately influencing the performance of the final product in terms of friction, durability, operating noise, energy consumption, and sealing properties. Product quality is determined by the precision of surface roughness. *For more details, please feel free to contact us.*

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Our "Holder Grip" features a non-sharp anti-slip surface treatment. To enhance the usability for practitioners and reduce fatigue, it is designed to be less reflective under lights and to minimize damage to surgical gloves. Additionally, the manufacturing process reduces hard-to-clean corners, allowing for better brush passage during cleaning. **Background of Development** In recent years, the use of double gloves in accordance with surgical medical practice guidelines has been recommended. It is common for surgical gloves to develop holes during procedures, which is classified as an act that inevitably compromises sterile operations. Reports of pinhole occurrences in surgical gloves range from 3.58% to 78%. Any tearing that compromises the integrity of gloves is serious, regardless of type, as pathogens can pass through pinholes and spread. The transmission of pathogens inevitably leads to increased contamination of the surgical field. This varies based on several factors, including the type of surface the gloves come into contact with, the sharpness of the surface, and the mechanical stress on the gloves. Our product features a non-sharp anti-slip treatment on the surface of surgical instruments. *For more details, please refer to the PDF document or feel free to contact us.*

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At Harada Iron Works Co., Ltd., we perform hard turning on high-hardness heat-treated steel. Compared to grinding processes, there are products that offer advantages in terms of cost and machining accuracy. We accept hard turning for outer diameter, end face, inner diameter taper surface, and inner diameter with a single chuck. The chuck can be selected according to the application and budget, including power chucks, collet chucks, air chucks, and diaphragm chucks. With roundness within "2μ" and coaxiality within "0.5μ," we have an advantage over grinding in terms of production lead time and price. We also have expertise in processing before heat treatment, so you can entrust us with all machining. *We can prepare necessary documents such as material mill sheets, turning processing data before heat treatment, heat treatment inspection reports, roundness/coaxiality/surface roughness inspection reports, etc., if you provide us with the required details. *For more information, please feel free to contact us.

• Processing Contract

At Harada Iron Works Co., Ltd., we perform hard turning on high-hardness heat-treated steel. Compared to grinding processes, there are products that offer advantages in terms of cost and machining accuracy. We have processing experience with materials such as general carbon steel, alloy steel, and martensitic stainless steel. For workpieces with high hardness, we use CBN tools or PCD tools for turning. For lower hardness, we use carbide tools or cermet tools for turning. The turning process can achieve a surface roughness of "Rz1.0μ to 2.0μ." If a higher surface roughness is required, we perform burnishing. Please note that depending on the material, hardness, and shape, mirror finishing may not be possible. Feel free to consult with us. *For more details, please do not hesitate to contact us.*

• Processing Contract

At Harada Iron Works Co., Ltd., we perform hard turning on high-hardness heat-treated steel. Compared to grinding processes, there are products that offer advantages in cost and machining accuracy. We use precision air chucks and diaphragm chucks that have low gripping stress and excellent repeatability. By simultaneously performing turning operations, we can achieve excellent taper shapes, R shapes, concentricity, and perpendicularity, while also eliminating the need for center holes, contributing to cost reduction. Depending on the workpiece size, we can achieve a surface roughness comparable to grinding, around Rz1.6. Additionally, if lathe tool marks are undesirable, we also offer machining to improve surface roughness using a burnishing tool. Changing the process from grinding to turning not only reduces costs but also contributes to shorter production lead times and improved quality. *For more details, please feel free to contact us.*

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The ultra-precision mirror finishing technology of Harada Iron Works Co., Ltd. can achieve Rz0.4µm in turning processes. It is an original finishing method that differs from conventional mirror finishing techniques such as grinding, electropolishing, chemical polishing, lapping, honing, buffing, blasting, and barrel finishing. This method eliminates the disadvantages of traditional techniques where dimensional control was difficult and prevents the occurrence of scratches that are hard to avoid in grinding processes. In addition to its superiority in quality, there are also cost advantages. *For more details, please refer to the PDF document or feel free to contact us.*

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Harada Iron Works Co., Ltd. assembles with reliable quality from detailed parts adjustments to inspections after completion, ensuring stable supply. We also manufacture assembly jigs and conduct leak tests (100% inspection) after assembly. We have a track record in sub-assemblies, press-fitting, screw fastening, and assembly for hydraulic components for construction machinery, medical devices, general industrial machine parts, and defense equipment parts. *For more details, please refer to the external link page or feel free to contact us.

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Our company has experience in thread cutting chamfering processing. In thread cutting, it is necessary to create a relief groove at the end of the thread, but establishing a relief groove can reduce strength and increase the risk of breakage. Therefore, we would like to introduce the benefits of a processing method that chamfers the end of the thread, eliminating the need for a relief groove. 【Processing Benefits】 "By chamfering, it is no longer necessary to create a neck that is narrower than the inner diameter of the thread at the incomplete thread section at the end of the thread, which increases the strength of the thread and reduces negative impacts on seals." Masakatsu Yamagishi, (1986) Introduction to NC Machine Tools (Illustrated) p.100. Tokyo Denki University Publishing. *For more details, please feel free to contact us.

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Our inspection and quality control systems are based on the ISO 9001 management system. We conduct leak tests after the manufacturing and assembly of hydraulic components for construction machinery. We have created dedicated test stands and perform 100% inspection before shipment. Additionally, we also conduct 100% inspection using solvent-based leak tests, which are prone to leakage, for other precision machined products. To accommodate a variety of shapes, we have established comprehensive inspection facilities and maintain a flexible inspection system that also supports 100% inspection. 【Quality Control System】 ■ Leak Tests ■ 100% Inspection ■ Quantification of Quality ■ Inspection Equipment *For more details, please refer to the external link page or feel free to contact us.

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We would like to introduce the "turning processing technology" of Harada Iron Works Co., Ltd. We have extensive experience in "turning processing" for small parts (φ42 or less) regardless of material type in small lot production. We also handle high-difficulty and high-precision processing with complex simultaneous processing using B-axis/C-axis/Y-axis and finishing processes on ultra-precision NC lathes with a specification of 0.1μm. 【Features】 ■ Achieving low costs through reduced manufacturing lead times ■ Short delivery times through flexible production ■ Small-diameter deep hole and knurling processing of 6Al4V titanium ■ Mirror surface turning processing that eliminates polishing, buffing, and lapping 【Examples of Production (Partial Excerpts)】 ■ Anti-slip processing on the surface of holder grips ■ Production of inspection jigs ■ Trocar and titanium grips for medical catheters ■ Mass production of adapters for dialysis treatment, among others *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce our achievements in the production of "inspection jigs." This product was developed in response to a customer's request to make it easy for practitioners in the medical field to see the tightening guidelines at a glance. Our company designed and manufactured the inspection jig. The products aligned with this jig maintained proper milling surfaces even after the screws were tightened, and we received a passing evaluation during the customer's acceptance inspection after delivery. 【Features】 ■ Three red reference lines are engraved on the jig's end face. ■ To keep the phase deviation during assembly to within 5°, limit lines are drawn at ±2.5° angles from the centerline. *For more details, please refer to the external link or PDF materials, or feel free to contact us.

• Inspection fixture

At Harada Iron Works, which specializes in hydraulic components for construction machinery and painting machinery parts, we are leveraging our high level of technical expertise developed over the years to challenge ourselves in the manufacturing of medical device components. In addition to introducing machine tools and inspection equipment, we registered as a medical device manufacturer following our participation in a seminar promoting collaboration between the medical and industrial sectors, and we are steadily increasing our sales. As achievements in medical device components, we present an article featuring examples of mass production of medical catheters, trocar titanium grips, and adapters for dialysis treatment! [Content Highlights (Excerpt)] ■ Mass production of adapters for dialysis treatment ■ Utilization of new processing machines and inspection equipment *For more details, please refer to the PDF document or feel free to contact us.

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Our company performs hexagonal hole machining with consistent production using dedicated tools. Due to the flexibility in process design, hexagonal hole machining has become possible in processes that were previously unachievable, leading to reduced production lead times and lower costs through process consolidation, eliminating the need for dedicated jigs. Additionally, there are advantages such as ease of machining for thin-walled shapes, which are difficult to process with press machining. This contributes to improved quality, reduced production lead times, and cost savings. Please feel free to consult with us. 【Features】 ■ Achieves high-level quality in complex machining of difficult-to-cut materials and small precision parts ■ Supports from one prototype to mass production of 1,000 units ■ Easy machining for thin-walled shapes *For more details, please download the PDF or feel free to contact us.

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Our company has been featured in the information magazine "ISICO" vol.100. Harada Iron Works, which specializes in hydraulic components for construction machinery and painting machinery parts, is leveraging its high technical capabilities developed over the years to challenge the manufacturing of medical device components. In entering new fields, we have utilized manufacturing subsidies under the support of ISICO to introduce machine tools and inspection equipment, and we registered as a medical device manufacturer following our participation in a seminar promoting collaboration between the medical and industrial sectors, steadily increasing our sales. [Excerpt from the publication] - Mirror finish achieved solely through turning without polishing - Mass production of adapters for dialysis treatment - Utilization of new processing machines and inspection equipment - Focus on information dissemination online *For more details, please refer to the PDF document or feel free to contact us.

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