Coil spring
coil spring
Coil spring, tension spring, disc spring, torsion spring, clock spring, heat-resistant spring
- Company：大日本スプリング製作所 大日本
- Price：Other
Coil spring Product List and Ranking from 8 Manufacturers, Suppliers and Companies | IPROS GMS
Last Updated： Aggregation Period:Jun 24, 2026～Jul 21, 2026
This ranking is based on the number of page views on our site.
Coil spring Manufacturer, Suppliers and Company Rankings
Last Updated： Aggregation Period:Jun 24, 2026～Jul 21, 2026
This ranking is based on the number of page views on our site.
- 鶴岡発條 Yamagata//Machine elements and parts
- 関西発條製作所 Nara//Machine elements and parts
- ソテック Shizuoka//Machine elements and parts
- 4 三協スプリング製作所 株式会社三協スプリング製作所 Osaka//Manufacturing and processing contract
- 5 大日本スプリング製作所 大日本 Osaka//Industrial Machinery
Coil spring Product ranking
Last Updated： Aggregation Period:Jun 24, 2026～Jul 21, 2026
This ranking is based on the number of page views on our site.
- Counting the number of turns in a spring 鶴岡発條
- Causes and countermeasures for spring breakage and damage. 鶴岡発條
- Introduction of case studies on the manufacturing of coil springs for automotive parts! 関西発條製作所
- Heat treatment of springs, low-temperature annealing, bluing. 鶴岡発條
- 5 DAIspring standard round wire spring (coil spring) ソテック
Coil spring Product List
1～22 item / All 22 items
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Spring
Spring
We own one of the few large coil ring machines controlled by computers in the Kansai region, allowing us to handle both small lots and mass production at low prices. We take pride in being able to deliver high-quality products in every aspect compared to other companies. If you have any demand for various types of springs, please feel free to leave it to us.
- Company：三協スプリング製作所 株式会社三協スプリング製作所
- Price：Other
Nylon-coated spring
It will not rust for a long time.
Due to the membrane pressure being about 1mm, it will result in a higher load than the usual design values, and consideration must be given to the adhesion of the coating to the seat winding section during design and manufacturing. Therefore, different know-how is required compared to standard compression springs. Our company has accumulated this know-how over more than 15 years.
- Company：三協スプリング製作所 株式会社三協スプリング製作所
- Price：Other
DAIspring standard round wire spring (coil spring)
Made using high durability SWPB (Piano Wire Type B)! A rich lineup.
We sell standard springs "TRYspring" and square wire strong springs "DAIspring." The "molded round wire coil spring" of DAIspring is a standard spring designed for press machines, allowing for selection based on deflection, unlike conventional round wire standard springs (TRYspring). It is characterized by the fact that many of them are polished even if the wire diameter is thin. Additionally, they are manufactured using high-durability SWPB (piano wire type B). We are currently producing them sequentially, so please inquire about delivery times. <Apology> Due to production circumstances, we are sequentially transitioning to right-handed winding. Please understand that there are both left-handed and right-handed items available. 【Features】 ■ Standard springs designed for press machines using round wire ■ Selection based on deflection is possible ■ Many are polished even if the wire diameter is thin ■ Manufactured using high-durability SWPB (piano wire type B) *For more details, please feel free to contact us.
- Company：ソテック
- Price：Other
Coil Spring Product Catalog
Overview of springs and specifications of various types of springs are published!
The "Coil Spring Product Catalog" is the product catalog of Oneston Co., Ltd., which sells standard mold components and manufactures mold and machine parts. This catalog includes an overview of springs, how to choose springs, the relationship between the number of uses and compression ratio for each spring, and tolerances. Additionally, it features various springs such as the "Power Spring TF (for light loads)," "High Deflection Power Spring TR," and "Round Wire Coil Spring LR." [Contents] ■ Overview of Springs ■ Standard Spring Series Load Curve Diagrams (How to Choose Springs) Power Springs ■ Standard Spring Series Load Curve Diagrams (How to Choose Springs) High Deflection Power Springs ■ Standard Spring Series Load Curve Diagrams (How to Choose Springs) MR, LR Round Wire Coil Springs ■ Relationship between the number of uses and compression ratio for each spring, tolerances for Power Springs, and more. *For more details, please refer to the catalog or feel free to contact us.
- Company：オネストン 本社
- Price：Other
Causes and Measures of Spring Deformation and Sagging
By changing the specifications of the spring, it is possible to prevent sagging.
We have received inquiries about the issue of 'the spring's force weakening during use.' This is caused by 'sagging.' 'Sagging' is a phenomenon where the material undergoes plastic deformation during the use of the spring, resulting in a change in the dimensions of the spring, which is due to insufficient material strength. Whether the material's strength is adequate can be calculated based on the spring's usage conditions. Countermeasures for 'sagging' involve changing the material to one with higher durability, increasing the wire diameter, and other specification changes. In doing so, we select specifications to ensure that the spring's force (spring constant and load) does not change; however, if there are restrictions on the space where the spring fits, we will proceed in consultation with the customer. If there are no issues with the material strength calculations, potential causes of 'sagging' may include: 1) improper heat treatment after spring forming, or 2) use in environments exceeding the heat resistance temperature. Our company addresses issues related to sagging, deformation, and other spring troubles. If you send us samples, we will verify the strength and durability and propose improvement measures. Our technical staff will respond carefully, so please feel free to consult with us.
- Company：鶴岡発條
- Price：Other
Compression spring SUS304-WPB Φ0.35 spring index
The "spring index," also known as D/d (debaide), is a value that serves as a guideline for the difficulty of processing.
The material used is "spring stainless steel wire SUS304-WPB." The wire with a diameter of Φ0.35 is wound into a coil with an average diameter of Φ11mm. The spring index is approximately 31, indicating that it is a spring with a high difficulty level for coiling processing. The spring index is the value obtained by dividing the average coil diameter by the wire diameter, serving as a guideline for the difficulty of processing the spring. It is also referred to as the spring index = D/d (Devi-D). According to JIS standards, a spring index between 4 and 22 is desirable. If the spring index is 4 or lower, the coil diameter is small and tight, making it difficult to wind; if the spring index exceeds 22, the coil diameter is large and fluffy, making it difficult to wind, which gives you that impression. This spring has a spring index exceeding 22, at 31, but how does it look? It seems to be wound quite neatly. If you have any issues with springs, please feel free to consult us. Our technical staff will respond carefully. Technical contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com Tsuruga Spring Co., Ltd. for springs. We also support web conferences.
- Company：鶴岡発條
- Price：Other
Compression spring, phosphor bronze wire C5191W Φ0.26, return spring.
Control the free length with a sensor to minimize variations in installation to maximum load.
This is a spring used for controlling the movable iron piece of an electromagnetic valve. To accurately manage the installation to maximum load, a sensor called a length measuring device is used. The length measuring device automatically measures and adjusts the free length of the spring during the coiling process. Since the variation in the spring's load is almost proportional to the variation in free length, control using this length measuring device is effective. The material used is "phosphor bronze wire, C5191W." After spring forming, the spring's properties are enhanced through heat treatment. Similar springs have been successfully made from "piano wire, SWP-A, SWP-B" and "stainless steel wire for springs, SUS304-WPB, SUS316-WPA." If you have any issues with springs, please feel free to consult us. Our technical staff will respond carefully. Technical contact: Ujiie Phone: 0235-22-0407 Tsuruoka Spring Co., Ltd. Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com
- Company：鶴岡発條
- Price：Other
Compression spring, barrel polishing, glossy finish
It is finished to a shine with barrel polishing.
Material: Stainless steel wire for springs, SUS316-WPA Wire diameter: Φ4.0 After spring processing, the surface is polished to a shiny finish using barrel polishing. By finely adjusting the material, size, and polishing time of the media, a gloss like the one in the photo is achieved. We will display the actual product at the exhibition, and everyone is surprised by the level of gloss achieved just through barrel polishing. We are grateful for the trial and error on site. If you have any issues with springs, please feel free to consult us. Turuoka Spring Co., Ltd. Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com
- Company：鶴岡発條
- Price：Other
Counting the number of turns in a spring
Care is needed in counting the number of turns of a spring.
I will count the number of coils in the photo of the compression spring. The number of lines = the number of circles = 5, therefore the number of coils = 5, but it is important to note that this is not the case. In the case of springs, one complete turn is counted as one coil. If you start counting from the left end, it will be one coil at the red circle. The star-marked area is still less than one coil, approximately 0.5 coils. The number of coils in this spring = 4 coils. By the way, the one coil at both ends is in contact with the adjacent coil and is called a "seat coil." The role of the seat coil is to improve stability when standing, and the seat coil itself does not function as a spring. The number of coils excluding the seat coils, which effectively work as a spring, is called the effective number of coils. This spring has an effective number of coils = 2 coils, total number of coils = 4 coils. If you have any questions or concerns about springs, please feel free to consult us. Our technical staff will respond carefully. Technical Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com Tsuruoka Spring Co., Ltd. We also support web conferences.
- Company：鶴岡発條
- Price：Other
![[Manufacturing Example] Coil Bone](https://image.mono.ipros.com/public/product/image/c07/2000729159/IPROS09262556940516337552.png?w=280&h=280)
[Manufacturing Example] Coil Bone
The length can be set freely from 70mm to 400mm! It can be bent flexibly!
We would like to introduce our manufactured product, "Coil Bone." It is used in women's innerwear, corrective underwear, medical corsets, and more. One of the product's features is that it can be flexibly bent by combining right-hand and left-hand springs. The type with a wire diameter of 0.6 to 0.7 mm is used in women's innerwear, corrective underwear, knee support pads, etc., while types with a wire diameter of 1.0 mm or more are used in medical corsets. The length can be set arbitrarily from 70 mm to 400 mm. [Case Overview] ■ Industry: Apparel/Medical ■ Material: Hard steel wire (SWC) ■ Production Lot: From 1,000 pieces ■ Size: Φ1.0×15.0w *For more details, please refer to the PDF document or feel free to contact us.
- Company：天伸 本社
- Price：Other
![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)
From one piece to mass production! [Precision ultra-fine custom-made springs]
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.
- Company：理研発条工業
- Price：Other
Spring arm SUS304-WPB Φ0.5 crushed processing
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.
- Company：鶴岡発條
- Price：Other
Lock pin, hard steel wire, SW-C Φ1.2, barrel polished.
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.
- Company：鶴岡発條
- Price：Other
Spring load: static load and dynamic load
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.
- Company：鶴岡発條
- Price：Other
Heat treatment of springs, low-temperature annealing, bluing.
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.
- Company：鶴岡発條
- Price：Other
Twisted spring, phosphor bronze wire, C5191, Φ1.4
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
- Company：鶴岡発條
- Price：Other
Kansai Spring Manufacturing Co., Ltd. Company Profile
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.
- Company：関西発條製作所
- Price：Other
Introduction of case studies on the manufacturing of coil springs for automotive parts!
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.
- Company：関西発條製作所
- Price：Other
Spring design - Prototyping, short delivery time
If you provide us with the general design requirements, we will design and prototype within a short timeframe.
The twisted spring in the photo was designed and prototyped by our company. We proceeded with the design based on the following specifications you provided: 1) Coil inner diameter, 2) Load at installation to maximum angle, 3) Durability (1 million cycles) The designed spring can be prototyped in a short lead time. The spring in the photo was delivered about one week after the order was placed. We can manufacture from a quantity of one. Our company accepts the manufacturing, design, and prototyping of various springs. If you provide us with rough design conditions, we will propose the optimal specifications and produce a prototype. We understand that some may be unsure about how to specify the design conditions for the spring. Our technical staff will respond carefully, so please feel free to consult with us. Tsuruga Spring Co., Ltd. Technical Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com We also support web conferencing.
- Company：鶴岡発條
- Price：Other
Deformation and sagging of springs: Causes and countermeasures.
Introducing the causes and countermeasures for deformation and wear of springs in spring troubles!
"Settle" refers to the phenomenon where the material of a spring undergoes plastic deformation during use, resulting in a change in the dimensions of the spring, primarily caused by insufficient material strength. The adequacy of the material's strength can be calculated based on the spring's usage conditions. Countermeasures for "settle" involve changing the material to one with higher durability, increasing the wire diameter, and other specification modifications. In doing so, care is taken to select specifications that do not alter the spring's force characteristics (spring constant or load), but if there are space constraints for the spring, discussions with the customer will be necessary. If there are no issues with the strength calculations, potential causes of "settle" may include: 1) improper heat treatment after spring formation, or 2) use in an environment exceeding the heat resistance temperature. Our company addresses spring-related troubles. If you send us the deformed item, we will verify its strength and durability and propose improvement measures. Our technical staff will respond carefully, so please feel free to consult us. Tsurugaoka Spring Co., Ltd. Technical Contact: Ujiie Phone: 0235-22-0407 Email: web@tohj.com We also support web meetings.
- Company：鶴岡発條
- Price：Other
Causes and countermeasures for spring breakage and damage.
The clues to identifying the cause of the damage are the lifespan calculations and strength calculations.
The clues for identifying the cause of breakage are lifespan calculations and strength calculations. If a spring breaks below the calculated results, the cause of the breakage is suspected to be "stress concentration" originating from scratches or machining marks. When we examine the springs upon consultation, we often find scratches or machining marks caused during processing. In this case, reworking with attention to these scratches can lead to improvement. If the timing of the breakage aligns with the calculations, the cause of the breakage is thought to be insufficient material strength. The countermeasure for breakage in this case is to change the specifications of the spring. Specifically, this may involve changing the material to one that is more durable or increasing the wire diameter, while considering the balance to avoid altering the spring's force characteristics (spring constant, load). Our company addresses spring-related issues such as breakage and sagging. If you send us broken samples, we will propose countermeasures and, if desired, we can also produce improved prototypes. First-time customers are also welcome to consult with us without hesitation. In fact, most of the customers who consult with us have never done business with us before. We look forward to your inquiries.
- Company：鶴岡発條
- Price：Other
