Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.
16～30 item / All 34 items
1,000 needs with 1,000 technologies.
Our springs, boasting high quality, are born from delicate ideas and a thorough customer-first philosophy. Tension coil springs are essentially considered the same as compression springs. (The coil part is typically tightly wound.)
![From one piece to mass production! [Precision ultra-fine custom-made springs]](https://image.mono.ipros.com/public/product/image/0c0/2000047737/IPROS04807890154470418539.jpeg?w=280&h=280)
Our company can accommodate custom springs, such as coil springs starting from 0.04mm, even from just one piece! Please feel free to consult us regarding prototypes, development, or any spring-related inquiries!
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.
![Coil spring with a wire diameter of 0.04mm [compression coil spring]](https://image.mono.ipros.com/public/product/image/7d6/2000558975/IPROS48979453774124717759.png?w=280&h=280)
It is relatively simple and easy to mass-produce, making the price affordable and the design of the mechanism easy!
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.
Please feel free to consult us about flat springs, rings, disc springs, and other related assemblies.
We deliver high-quality products such as various compression coil springs and tension coil springs quickly. Our range of compression coil springs includes straight, single tapered, double tapered, and conical designs. They can be widely used for railway vehicles, aircraft, automobiles, construction machinery, electrical equipment, ships, and various machines. 【Features】 ● High quality and high reliability ● Responds to a wide range of needs ● Springs made from various materials ● Quick response with computer design ● Small lot orders are also possible For more details, please download the catalog or contact us.
We manufacture and sell high-quality push springs, compression springs, and other types of springs.
Satte Spring Co., Ltd. has been providing products in a wide range of fields since its establishment, starting with precision springs for automobiles, as well as medical devices, electronic equipment, and outdoor products. We take pride in the important role that the flexibility and rigidity of our springs play as mechanical elements in various products. We continuously challenge ourselves with special steels, high-strength materials, and complex processing, aiming to create products that delight our customers. We produce everything in-house, from ultra-small springs with a wire diameter of 15μ to springs for construction equipment with a diameter of φ12, supporting you with Japan's top-class processing range and services, whether for single units or mass production of high-quality products. 【Business Overview】 ○ Manufacturing and sales of high-quality springs and related products → Compression springs, coil springs → Cylindrical coil springs, ultra-fine and ultra-small springs → Tension coil springs, flat springs, leaf springs → Torsion springs, wire forming, and more For more details, please contact us or download our catalog.
We propose optimal conditions using corner and flat materials! Achieve miniaturization of springs and specifications for heavy loads!
At Kanto Spring, we offer optimal solutions using square and flat materials for customers looking for miniaturized springs or heavy-load springs. We can provide proposals in various materials such as SUS, SWOSC-V, and SUS. 【Features】 ■ Use of square and flat materials ■ Lineup of materials including SUS, SWOSC-V, and SUS ■ Achieving miniaturization and heavy-load specifications *For more details, please refer to the PDF document or feel free to contact us.
Same-day shipping at the earliest! Custom-made coil springs available for order from just one piece!
"We want products with higher precision (tighter tolerance ranges) than standard products." "We want springs with a larger outer diameter relative to the wire diameter, as well as smaller springs." "We would like prototypes to be made using mass production machines, as we are considering mass production." 【Features】 ■ Load tolerance of ±1% guaranteed through full load inspection ■ Burr-free low-cost polishing technology ■ Same-day shipping at the earliest ■ Free sample provision for orders of over 100 pieces *For more details, please contact us or download the catalog.
The round hook is a hook shape that is resistant to breaking and deformation.
The spring in the photo is a breakage prevention product designed and prototyped by our company. It features a structure where a hook with a stop processing is incorporated into the body, referred to as a "drawn round hook" according to JIS standards. This hook shape is resistant to issues such as breaking and deformation. With a "drawn round hook," the body and hook can be designed separately. This allows for an increase in the strength of the hook without changing the spring's force (spring constant or load), making it an effective means when designing springs to be less prone to breaking. While not as strong as the "drawn round hook," the "round hook (large bend radius)" is also a hook shape that is resistant to breaking and deformation. From a cost perspective, the "round hook (large bend radius)" is advantageous, so I believe it is worth considering as well. For more information on round hooks, please refer to the related links. If you are experiencing troubles with springs, such as breakage or deformation, please feel free to consult us. If you send us broken samples, we will propose improvement measures. Tsurugaoka Spring Co., Ltd. Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com We also support web meetings.
The crushed processing part functions as a retention for the resin coating.
The material is "spring stainless steel wire - SUS304-WPB," with a wire diameter of Φ0.5. After bending processing with a multi-forming machine, the tip is flattened (indicated by the yellow arrow). The flattening process is finished by hand using a dedicated jig. The flattened part functions as a retention stop during the subsequent resin coating process. Our company offers wire forming and bending processing services. Please feel free to consult us if you have any concerns. Our technical staff will respond carefully. Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com Technical contact: Ujiie Tsuruoka Spring Co., Ltd. We also support web conferencing.
We are performing barrel polishing to remove fine burrs and other imperfections.
The material used is "hard steel wire - SW-C." While "hard steel wire" has lower durability compared to the iron-based spring material "piano wire," it is a cost-effective material with good workability. After forming, heat treatment is performed, and barrel polishing is carried out to remove fine burrs and other imperfections. The surface treatment is "electroless nickel plating." If you have any issues with springs or forming, please feel free to consult us. Our technical staff will respond carefully. Tsurugaoka Spring Co., Ltd. Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com We also support web conferencing.
The loads applied to a spring can be broadly divided into two types: static loads and dynamic loads.
◎ Static Load The following cases apply: 1) During the use of the spring, there is no fluctuation in load (a constant load is applied). 2) There is fluctuation in load, but the number of repetitions is approximately 1,000 times or less over its lifetime. ◎ Dynamic Load Also referred to as repeated load, most springs fall into this category. The methods for evaluating the durability of springs also differ for each case. In the case of static load, the evaluation criterion is whether the material undergoes plastic deformation. The idea is that it is acceptable as long as there is no "settling" in the spring. For dynamic load, it is natural that there is no settling, and the evaluation is based on how many cycles the spring can endure before fatigue failure occurs. By the way, enduring 10 million cycles is considered equivalent to having a semi-permanent durability. The "fatigue" of metals refers to the progression of micro-cracks due to repeated loading. Typically, it does not involve plastic deformation, making it a very troublesome phenomenon that can lead to sudden failure without any prior signs of settling or deformation. This concludes a rough explanation of static and dynamic loads and their evaluation methods. If you have any points that were insufficiently explained or any questions, please feel free to contact us by phone or email.
After spring forming, heat treatment must be performed to remove residual stress.
When processing spring materials, residual stress occurs within the material. If this residual stress is left untreated, the spring will attempt to return to its original shape, resulting in deformation over time. To avoid this phenomenon (springback), stress relief heat treatment is always performed after spring forming. Higher heat treatment temperatures are more effective at removing residual stress. However, spring materials have the characteristic that their strength decreases sharply when exposed to temperatures exceeding 450 degrees Celsius. Therefore, the stress relief heat treatment for springs is conducted at relatively low temperatures ranging from 200 to 450 degrees Celsius. This heat treatment is referred to as "low-temperature annealing." (In our spring manufacturing field, we call it tempering.) Materials such as piano wire, which are iron-based, develop a layer of iron oxide on the surface due to low-temperature annealing, and the color changes from brown to deep blue (as shown in the photo) as the heat treatment temperature increases. Because of this blue coloration, low-temperature annealing is sometimes referred to as bluing treatment. However, in the case of stainless steel, there is not much color change even after heat treatment, so the term "bluing" does not seem appropriate as a description for heat treatment of springs in general.
Bronze wire develops "springiness" through heat treatment.
Material: Phosphor bronze wire, C5191W Wire diameter: Φ1.4 Springs are sometimes required to have properties such as non-magnetism, electrical conductivity, and corrosion resistance. It is often difficult to satisfy these properties with iron-based or stainless steel spring materials, so copper alloys are chosen. The most commonly used material for coil springs is "phosphor bronze wire." Phosphor bronze wire exhibits "springiness" only after heat treatment, so it must undergo heat treatment after forming. The heat treatment temperature is around 250 degrees and is referred to as low-temperature annealing. (For more information on phosphor bronze wire, please refer to the related links.) If you have any concerns regarding springs, please feel free to contact us. Tsurugaoka Spring Co., Ltd. Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com
Achieving low cost while maintaining high quality! Our technological prowess leads the future.
Since its establishment in September 1952, Kansai Hatsu Spring Manufacturing has been engaged in the production of automotive chassis springs, various types of coil springs, and metal pressing processing. We possess the creativity and technical skills to meet the diverse needs demanded by the times, ensuring high quality and providing satisfaction and trust to our customers. From a region where traditional historical heritage, lush nature, and the Kansai cultural and academic research city harmoniously coexist, we continuously communicate to the world. 【Business Activities】 ■ Manufacturing of automotive parts and lighting components ■ Coil spring products ■ Press products ■ Leaf spring products ■ Wire processing products ■ Ring-formed products ■ Plastic molded products *For more details, please refer to the PDF materials or feel free to contact us.
I will introduce a case where we supported a company that was troubled by production stoppages at overseas factories by providing domestic production and alternative mass-produced products.
Our company can accommodate various metal press products such as flat springs, coil springs, disc springs, wave springs, thin plate springs, and precision presses. We also handle insert molded products, clinched press products, and heat-adhesive press products. 【Production Case Introduction】 In 2021, due to the lockdown caused by COVID-19, our customer faced difficulties as production at their overseas factory came to a halt. As our company has a wealth of experience in processing various automotive spring products, we received an urgent request from the customer for the production of automotive spring products. We produced approximately 300,000 pieces for this urgent request, while also managing other mass-produced items, and we were able to meet the customer's requirements and deliver the desired production quantity. By supplying approximately 300,000 parts this time, we were able to contribute to the Japanese automotive industry by providing alternative parts supply to Japanese automotive manufacturers without stopping their production lines. As a result, we responded quickly to the urgent short-term request and maintained high quality, earning a "Special Contribution Award" from the customer. *For more details, please download the PDF or contact us.
