理研発条工業 List of Products and Services

We would like to introduce the "N2 Gas Spring" that we handle. We offer a rich lineup that accommodates any size. We also have CAD drawing data available to support your development and design. Additionally, we cater to special applications such as counterbalance and traction gas springs, and we can provide custom-made products as well. 【We can solve the following issues】 ■ We want support for high-quality products from the mold design stage. ■ We would like suggestions for increasing initial pressure and appropriate sizes when replacing coil springs. ■ We want custom-made products for special applications. *For more details, please download the PDF or feel free to contact us.

• Spring

We would like to introduce the 'AZOL Nitrogen GAS SPRING' that we handle. It features a rich lineup of over 4,000 types and is a high-quality product certified under PED2014/68/EU. Additionally, we provide sales support at 53 locations worldwide, achieving long life and excellent cost performance. 【Features】 ■ A rich lineup of over 4,000 types ■ High quality certified under PED2014/68/EU ■ Sales support at 53 locations worldwide ■ Achieves long life and excellent cost performance *For more details, please download the PDF or feel free to contact us.

• Spring

We will introduce the topic of "Surface Treatment of Springs (Plating and Coating)." Surface treatment is essential for springs made from steel-based materials. After all, iron is prone to corrosion, and it is not uncommon for it to lead to breakage. While inexpensive treatments may involve applying anti-corrosion oil, there are concerns about chemical attacks, and the corrosion resistance may not be sufficient. Even with stainless steel, surface treatment is possible if there are requests for lubrication, appearance, etc. Additionally, there are various treatments for springs, such as burr removal and improving fatigue strength. Please refer to the table of recommended surface treatments from our company. *For more details, please refer to the PDF materials or feel free to contact us.*

• Surface treatment contract service

This introduction discusses "low-temperature annealing," a common heat treatment for springs that undergo cold forming. When springs are processed cold, residual stress occurs in the processed areas, leading to dimensional changes and a reduction in elastic fatigue strength. The purpose of this treatment is to eliminate that residual stress. Additionally, it also aims to improve the mechanical properties of materials that have undergone work hardening, such as piano wire, hard steel wire, and stainless steel wire, which are processed through cold drawing. [Objectives of this treatment] - Eliminate residual stress - Improve the mechanical properties of the material itself *For more details, please refer to the PDF document or feel free to contact us.

• others

A compression coil spring is a common type of spring. Is the image of a spring that you have in mind a compression coil spring? At RIKEN Spring Industry, we have technologies that are difficult for other companies to achieve, even with general "springs." Among the many types of springs, the most commonly used is the compression coil spring. The reason for this is that its shape is relatively simple, making mass production easy and resulting in a low price, as well as facilitating the design of mechanisms. Generally, the pitch of the winding (coil) is equal, and many have an equal pitch. 【Common shapes of the seat winding part】 ■ Closed end (ground) ■ Open end (ground) ■ Tangent tail end ■ Pig tail end *For more details, please refer to the PDF document or feel free to contact us.

• Inductor Coil

At RIKEN Hatsujo Industry, we can manufacture tension coil springs in various shapes. We will consider the shape of the hooks according to the application to improve assembly, satisfying the specifications of tension coil springs such as round hooks, reverse round hooks, and half-round hooks. A tension coil spring is a type of spring used for applications that bear tensile loads, in contrast to compression coil springs. It is often designed to be tightly wound to effectively utilize the initial tension and minimize space. For inquiries about the "Tension Coil Spring Design Software," please contact us via the inquiry form or email. 【Available Hook Shapes】 ■ Round Hook ■ Reverse Round Hook ■ U Hook ■ Half-Round Hook, etc. *For more details, please refer to the PDF document or feel free to contact us.

• Inductor Coil

If there is not enough space for cylindrical compression coil springs, conical coil springs are an effective solution. At RIKEN Spring Manufacturing, we will consider the shape according to your desired spring characteristics, including conical springs, variable pitch springs, and barrel-shaped springs. For the "Conical Coil Spring Design Software," please contact us via the inquiry form or email. 【General Shapes】 ■ Conical Coil Springs ■ Drum-shaped Coil Springs ■ Barrel-shaped Coil Springs ■ Square Tapered Coil Springs *For more details, please refer to the PDF materials or feel free to contact us.

• Inductor Coil

Our company manufactures complex-shaped springs with stable quality. Even for springs that have many bending processes and are difficult to produce, stable production is possible thanks to high-performance machines and skilled techniques. We are also proficient in slide springs used in slide-type mobile phones, which are currently trending. For inquiries about the "twisted coil spring design software," please contact us via the inquiry form or email. *For more details, please refer to the PDF materials or feel free to contact us.

• Inductor Coil

At RIKEN Hatsujou Industry, we are able to produce springs with a small spring index, which are difficult to manufacture by other companies, using our own developed equipment. The double torsion spring is a twisted coil spring that uses coils at two points. Since it can stand alone as a single spring, design becomes easier, and it is possible to eliminate the core pin. If both sides have the same shape, the load value can be determined by multiplying the load value on one side by two. For the "Twisted Coil Spring Design Software," please contact us via the inquiry form or email. We distribute it via email. *For more details, please refer to the PDF document or feel free to contact us.

• Inductor Coil

A clip for securely fixing posts, designed for easy installation by a spring manufacturer. 【Benefits of Using Posts】 1. Ideal for outsourcing measures 2. Less prone to disease 3. Promotes growth due to good sunlight exposure 【Features】 ■ Perfect for repeated use ■ Made of rust-resistant stainless steel ■ Firmly secured by the power of the spring Perfect for climbing plants such as tomatoes, cucumbers, bitter melons, and watermelons! Please give it a try. *For more details, please download the PDF or contact us.*

• Spring

**About Surface Treatment of Springs** Surface treatment is essential for springs made from steel-based materials. After all, iron is prone to corrosion, and it is not uncommon for it to lead to breakage. Inexpensive treatments may involve applying rust-proof oil, but there are concerns about chemical attack and the corrosion resistance may not be sufficient. (*Chemical attack refers to the phenomenon where stress applied to molded parts that have oil or grease on them can easily lead to cracking.) For stainless steel, surface treatment is also possible if there are requests for lubrication, appearance, etc. Additionally, there are various treatments for springs, such as burr removal and improving fatigue strength. Please refer to the table of recommended surface treatments from our company. **Contents of Surface Treatment Diagnosis** ■ Rust prevention is necessary → 1. Nickel plating 2. Trivalent chromate 3. Chrome plating ■ Rust-proof oil adhesion is problematic → 1. Nickel plating 2. Trivalent chromate 3. Chrome plating etc... *For more details, please refer to the PDF document or feel free to contact us.*

• Contract manufacturing
• Spring

**About Materials for Springs** It goes without saying that springs are made from materials specifically designed for them. There are various types of materials for springs, tailored to different environments and applications. It is important to select the optimal material, as there are materials with excellent corrosion resistance, high heat resistance, high conductivity, and non-magnetic properties, among others. **Content of the Document** - Typical materials for cold-formed wire springs - Typical materials for flat springs - Applications - Operating environments *For more details, please refer to the external link or PDF document, or feel free to contact us.*

• Contract manufacturing
• Spring

At our overseas base, RIKEN SPRING MEXICANA, we have introduced high-precision, state-of-the-art equipment made in Japan, and our staff, who have gained experience in Japan, are dedicated to manufacturing. Since our factory is located in Guanajuato, in the central highlands where automobile manufacturers gather, we can deliver in a short time. We also handle materials made in Japan, allowing us to provide Japanese quality in Mexico. We have Japanese staff on site, so please feel free to consult with us. 【Features】 ■ Significantly reduced logistics costs compared to exports from Asia ■ Capable of short delivery times ■ Equipped with Japanese measuring instruments, enabling high-precision measurements *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing

Our company delivers stable products to our customers through progressive stamping. We have a wealth of experience with various types of contacts, grounds, shield cases, and more! Additionally, we can process not only thin plate springs but also stamped parts. Please feel free to consult us regarding spring specifications or any inquiries. We also accept prototypes for thin plate springs and stamped parts. Feel free to consult us about thin plate springs, disc springs, wave washers, etc. We accommodate a range of materials from general to special materials. 【What is a thin plate spring?】 A thin plate spring generally refers to a thickness of 1.0mm or less. It is used in various applications such as battery contacts, switches, retaining hardware, and disc springs. Stainless steel strips are the most commonly used, but phosphor bronze is often used for contacts. Additionally, carbon steel may be used for products requiring high loads. 【Features】 ■ Production using our self-developed high-performance machines linked with computers through a "multi-process automated production system" to meet the needs of small quantities and diverse varieties. ■ High-quality springs that have gained strong trust from overseas. ■ Capable of press forming to a thickness of 50μm. ■ Applicable to various fields. *For more details, please download the PDF or contact us.

• Spring

At RIKEN Hatsujo Industry, we also perform assembly work to improve our customers' production efficiency. We have a well-equipped facility for high-speed riveting, welding, brazing, and more. Additionally, we can produce hinge units. Please request press products, machined parts, molded products, etc., all at once from RIKEN Hatsujo Industry. 【Features】 - Production using our self-developed high-performance machines linked with computers, tailored to meet the needs of small quantities and diverse varieties through a "multi-process automation production system." - High-quality products that have gained strong trust from overseas. - Streamlining the manufacturing process to enhance product value. - Designing structures that best meet needs according to product design. - Modularized as a single composite part, making replacement easy. *For more details, please download the PDF or contact us.

• Spring

We are a precision spring manufacturer specializing in coil springs (compression springs, tension springs, torsion springs) and leaf springs. We respond to requests with high technical capabilities, from ultra-fine and ultra-small springs to complex wire products. We also manufacture progressive dies for leaf springs in our own factory, allowing us to handle high precision and difficult machining. In addition to springs, we welcome inquiries for various products, including precision sheet metal parts, press parts, and assembly parts, from prototypes to mass production. 【Features】 ■ Compression springs ■ Tension springs ■ Torsion springs ■ Leaf springs ■ Ultra-fine and ultra-small springs etc... *For more details, please download the PDF or contact us.

• Spring