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This section provides an overview for constant force springs as well as their applications and principles. Also, please take a look at the list of 32 constant force spring manufacturers and their company rankings. Here are the top-ranked constant force spring companies as of December, 2024: 1.SPIROFLEX, 2.Automated Industrial Motion, 3.Takachiho America, Inc..
Table of Contents
A constant force spring is a type of spring that generates a consistent load regardless of the distance it is stretched.
These springs are utilized when there is a need to support a constant load. Unlike traditional wire springs commonly found in daily life, which are made of coiled metal wire, constant force springs have a distinctive design. They consist of a thin plate wound around a drum, and when pulled externally, the drum rotates, extending the spring.
Constant force springs have a relatively simple structure, making them easy to design and install. This simplicity can lead to cost savings. When properly designed and manufactured, constant force springs can maintain stable performance over extended periods.
However, it's essential to note that constant force springs are designed for specific load ranges and may be vulnerable to loads beyond that range. When unexpected loads may be applied, it's crucial to consider an appropriate safety margin.
Constant force springs find applications across various industries. Here are some examples:
Constant force springs are used for various purposes in buildings and structures. In bridge supports, they help distribute loads evenly, supporting the weight of bridge loads and vehicular traffic. This equalization of load distribution enhances stability.
They are also employed in building foundations to stably support the structure's weight, mitigate ground subsidence, and reduce the risk of building distortion, particularly in earthquake-prone areas.
Constant force springs are used in mechanisms like door hinges to support a specific weight. This ensures smooth door movement and stable operation during opening and closing, particularly for larger doors.
In industrial machinery and production lines, maintaining consistent product weight is sometimes necessary. Constant force springs are often employed to achieve this by keeping the product's weight constant. This ensures uniform product quality and stability in the production line.
Additionally, it helps prevent machinery malfunctions and issues arising from fluctuating product weights.
Constant force springs are specialized springs designed to support a constant load, based on fundamental principles of mechanics. The key principles involved are Hooke's Law and the law of action-reaction.
Hooke's Law is a fundamental concept in mechanics that describes the linear relationship between stress and displacement for elastic materials. According to this law, stress and displacement are proportional within the elastic deformation range. Constant force springs are designed based on Hooke's Law and achieve their ability to support a constant load by generating a reaction force through deformation when a load is applied.
In addition, constant force springs are often adjusted to provide a consistent displacement within the specified load range. Achieving equilibrium between the external force applied to the constant force spring and the reaction force generated by the spring is crucial. This equilibrium allows for the support of a constant load.
Constant force springs are designed to maintain a constant load by utilizing Hooke's Law and ensuring equilibrium between external forces and reaction forces. By selecting appropriate materials and dimensions and manufacturing constant force springs to suit their intended purpose, structures and devices with high stability and reliability can be achieved.
When choosing a constant force spring, several essential factors should be considered. Here are some examples:
The material of the constant force spring affects its elastic properties and durability. Commonly used materials include steel or stainless steel. The choice of material should align with the specific application's requirements, taking into account factors like elastic deformation range and strength.
The material of the drum on which the constant force spring is wound is crucial. The drum is responsible for winding and holding the spring, so it must be robust and durable. Materials like steel or hard plastic are often used for the drum. The choice of drum material can impact the spring's applicability and durability, so it should match the operational environment and purpose.
The load rating of a constant force spring indicates the range of loads it is designed to support. The selection of a constant force spring should consider the expected load applied to the equipment or structure in which it will be used. Exceeding the load rating can result in unexpected deformations and potential safety and performance issues.
Dimensional parameters, including length, outside diameter, and the number of turns, are critical in constant force spring design. These dimensions influence stiffness, deformation, and stress distribution. Careful consideration of these dimensions is essential to meet specific application requirements.
*Including some distributors, etc.
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Lee Spring Company, founded in 1918, is an American manufacturer headquartered in Brooklyn, New York, specializing in custom springs. The company produces various custom springs, including compression, extension, and torsion springs. Under brands such as REDUX, HEFTY, and LeeP, the company offers wave, die, and plastic composite springs. Other types of springs, like battery, constant force, and continuous length extension springs, are also available. The company also provides MIL-SPEC spring series, MS24584 and MS24586, meeting the technical requirements for military and aerospace applications. Additionally, the company offers Belleville washers, used in compression spring applications that require high loads within limited spaces.
Zauderer Associates, Inc., established in 1954, is a US-based custom component parts and assemblies representative agency headquartered in Rockmart, Georgia. The company provides sales coverage, engineering assistance, and manufacturer sourcing for standard and custom-made products, such as air circulation equipment, metals, polyurethane films, springs, and riveting. The company serves various commercial markets and manufacturers, including the agriculture, construction, medical, energy, and transportation industries. Common applications for their sourced components are residential appliances, furniture, aircraft, and apparel.
Vulcan Spring and Mfg. Co. has been a manufacturer of custom springs and assemblies since 1967, based in Telford, PA, USA. The company provides springs for various industries, including aerospace, automotive, medical, and retail displays. Their machinery and engineering expertise provides custom solutions that meet the most challenging applications. They are a USA-based, ISO-certified supplier. They are also SMI certified, Thomas verified suppliers, and a PMA member. Vulcan has global recognition from Tier 1 OEMs, design firms, and contract manufacturers. They also distribute steel strapping, seals, and tools to meet industrial bundling requirements.
SDP/SI was founded in 1950 and is situated in New Hyde Park, New York. SDPP/SI is a manufacturer of precision gears and high-quality mechanical components used in the aerospace, industrial manufacturing, medical technology, and robotics fields. The company manufactures parts in a variety of materials including alloy steel, stainless steel, bronze, brass, nylon, and titanium. The company also provides coating services such as heat treating, zinc plating, and painting. Additional custom options are available including manufacturing to customer drawings and specifications.
Metal Works Corporation was incorporated in 1956 and is based in Baton Rouge, Louisiana. The company is a specialty metal manufacturer with skills in the fabrication of specialty springs of all alloys from aluminum to zirconium, custom rotating mechanical seals, and various other industrial components. The company manufactures all products in-house in Louisiana and ships to domestic and foreign customers to industries such as chemical plants, petroleum refiners, paper mills, and maritime.
LGM, Ltd. began operations in May, 1985 and is headquartered in Maiden, North Carolina. The ISO 9001:2015 certified company is a manufacturer of custom rope and wire products, operating as a division of Jelliff Corporation. The company’s 2 primary product lines are custom rope heaters and custom wound ignition core. Flexible rope wire, often known as rope heater, can be made in resistance ranging from 5 ohm to 1500 ohms per foot and using alloys including stainless steel, copper, and nickel. Custom wire options included primary and secondary spring types, materials used, and spring end types.
General Wire Spring Co., established in Pittsburgh, PA, in 1930 is a manufacturer of custom springs and wires stamping machines, and assembly lines, that are used to provide controlled force, tension, or compression. Their product portfolio includes compression springs, extension springs, torsion springs, wire forms and spring materials. The company's products are used in industries such as Industrial Machinery, Electronics, Automotive and Electrical Equipment. The company has a national distribution network and a customer support center.
C & F Wire Products, established in 1995, is a manufacturer of precision custom springs such as compression, torsion, extension, and battery-contact springs, used in electronics, industrial, recreational, military and computer industries. The company located in Stanton, CA, offers services such as automatic or short-run coiling, special packaging, research & development assistance, product assembling, and in-house vibratory Tumbling. The company is ISO 9001:2015 certified and a member of the West Coast Spring Manufactures Association (WCSMA) and Spring Manufactures Institute (SMI).
Bansbach easylift is a manufacturer of motion control solutions, since 1919 producing a wide range of lockable gas springs, dampers, shock absorbers, and connecting parts. Based in Melbourne, Florida, Bansbach easylift has ISO 9001:2008 certification, ITAR Registration, and EASA Part 21G Form 1 certification. The company uses environmentally friendly materials along with stringent QC measures for consistent and accurate production. Their products are applied in diverse range of industries including automotive, furniture, machinery, medical, and aerospace.
AARD Spring & Stamping, founded in Temecula, CA , in 1970 is a manufacturer of springs, wire forms, four slide & stamping products. The company's product portfolio includes Double Torsion Spring for the Medical Industry, Lock Latch for the Communications Industry, Extension Spring with Formed End for the Music Industry, Large Wire Torsion Spring for the Construction Industry and Wire Form for the Lighting industry. The company provides services such as Product Selection Guidance, Engineering Support, New Product Design and Development and Custom Manufacturing.
Gardner Spring, Inc., since 1907, has been a manufacturer and supplier of springs such as compression springs, extension springs, disc springs, and extensions such as safety drawbar extensions, utility extensions, double-looped extensions, cot extensions, and ulta precision extensions used in OEM, industrial, kitchen appliances, aerospace components, and hardware industries. Located in Tulsa, OK, the company is woman-controlled and a member of the National Association of Manufacturers, C200, Spring Manufaturer Institute, Ahma, and Tama associations.
St. Mary's Spring Company, established in 2005, is headquartered in New York, USA, and is a manufacturer of technology solutions. Specializing in software development, cloud-based digital transformation, AI, and automation. The company also crafts user-centric mobile apps and responsive web solutions. The company received awards such as the Tech Innovator Award in 2016 and the Digital Transformation Excellence Award in 2019. It holds certifications like ISO 9001 for quality management or ISO 27001 for information security management. The company caters to the finance, healthcare, retail, and manufacturing sectors.
3M Company was founded in 1902 and is headquartered in St. Paul, Minnesota. 3M provides diversified technology services globally. 3M operates through four segments: Safety and Industrial, Transportation and Electronics, Health Care, and Consumer. The Safety and Industrial segment offerings include industrial abrasives, masking, and natural and color-coated mineral granules for shingles. The Transportation and Electronics segment offerings include ceramic solutions, light management films, and electronics assembly solutions. The Healthcare segment offerings include wound care, dentistry and orthodontia solutions, and filtration and purification systems. The Consumer segment offerings include consumer bandages, picture hanging, and stationery products.
Automated Industrial Motion, established in 2005, is headquartered in New York, USA, and is a manufacturer specializing in the conception, design, and production solutions. The company specializes in automation solutions encompassing cloud-based applications, AI integration, and mobile and web platforms. The company received the 2017 Tech Innovator Award and the 2019 Digital Transformation Excellence Award. It holds certifications such as ISO 9001:2015 to maintain quality standards in our processes and services. Its offerings cater to diverse industries such as finance, healthcare, retail, and manufacturing.
S.W. Anderson Co. was founded in 1926 and is based in Farmingdale, New York. S.W. Anderson is a customer-based manufacturer and distributor of specialty fasteners, standard fasteners, and other OEM products. S.W. Anderson’s product lineup includes numerous segments including inserts, bearings, fasteners, slides, and isolators. S.W. Anderson distributes from many manufacturers including PEM, Stanley, Hutchinson, Acuuride, and Heyco. S.W. Anderson's services include vendor-managed inventory programs, advanced supply chain management, and order management.
Takachiho America, Inc., founded in 1952, is a supplier of motion control solutions and business development services in Itasca, IL. The company has been a Takachiho Koheki Co., Ltd subsidiary since 2015. The mechanical components supplied include dampers, Conston springs, cyclonic filters, bacteria sterilizers, and level indicators used in home appliances, chip conveyors, automotive interiors, CNC machines, and medical equipment. The company offers business development services such as market research, opportunity identification, technology evaluation, and alliance partnership assistance.
Fusehatu Kogyo Co., Ltd., founded in 1946 with headquarters in Higashiosaka City, Japan, is a manufacturer of springs and assemblies. The company's product line includes treated and straight-cut spring materials, custom-made springs, spring assemblies, and spring units (springs, plastics, and bolts). These products are primarily made to order, and custom products can be continually produced for clients with ongoing high-volume orders. The company serves many industries, including electronics manufacturing, appliance manufacturing, and vehicle suspension makers.
GEORGE EMMOTT (PAWSONS) LTD., established in 2015, is headquartered in London, United Kingdom, and is a manufacturer of renewable energy solutions. The company specializes in renewable energy solutions, including solar panels, wind turbines, and geothermal heating systems. The company has received awards, including the 2019 Green Innovation Award and the 2020 Green Innovation Award. It holds both ISO and CE certifications for quality and compliance in the renewable energy sector. The company caters to a diverse clientele across residential, commercial, and industrial sectors.
Guangdong GLD Display Products Co., Ltd., established in 2005, is headquartered in San Francisco, California, USA, and is a manufacturer of display technologies. The company specializes in the research, development, and manufacturing of display technologies. Its product range includes customized display solutions, touchscreen technology integration, optical coating, interactive display systems, and display hardware manufacturing. In 2017, the company received the Display Innovation Award. It holds certifications such as ISO 9001 for quality management and ISO 14001 for environmental management. The company caters to electronics, automotive, and medical devices.
KERN-LIEBERS Ltd., established in 1977 and based in Gainsborough, Lincolnshire, United Kingdom, is a manufacturer of a wide range of constant force, power, and spring assemblies. The company specializes in manufacturing components and systems including springs, stamped & fine-blanked parts, wire parts, and more. These components find applications in a wide array of industries, including automotive, medical technology, electronics, and engineering sectors. The company was awarded the Industry Excellence Award in 2016 and the Innovation Pioneer Award in 2019. It holds certifications such as ISO 9001 and ISO/TS 16949 for quality management.
Tech Spring Manufacturing Corp., established in 1987, is a metal spring manufacturer based in New Taipei City, Taiwan. The company’s offerings include standard and custom coil, compression, constant force, extension, and power springs, along with retaining, torsion, and wave springs. It also produces computerized numerical control (CNC) wire form parts, metal stampings, and precision turned parts. These products are constructed from materials chosen for their specific properties such as corrosion and water resistance, heat tolerance, rate of thermal expansion, and load-bearing capacity. They cater to diverse applications like medical devices and watches, utilizing materials like carbon, stainless steel, and other alloys.
YongSheng, established in 2005, is headquartered in Mumbai, Maharashtra, India, and is a manufacturer and supplier of precision springs and related components. The company offers a wide range of products, including compression springs, extension springs, torsion springs, and wire forms. These components find applications in industries like automotive, electronics, and medical devices. The company has earned awards such as the 2017 Quality Excellence Award and the 2019 Supplier of the Year Award. It holds certifications such as ISO 9001:2015, which are international standards for quality management systems.
Designatronics is based in New York, New York, USA, and is a manufacturer of mechanical products and components that was established in 1960 following the acquisition and subsequent merger of Quality Bearings & Components, QTC Metric Gears, SDP/SI, and Wybur Tools. The company’s products include belt and chain drives for enabling motion and power, gears for transmitting motion and power, and various shafts for supporting and connecting assembly components. The company’s products are used mainly by clients in the aerospace, automotive, and defense sectors.
MW Industries, started in 1861 and based in North Carolina, US, is a manufacturer of a wide array of precision components and products. The company produces threaded insert screws, nuts plain, and stock extension springs. Its products are used in automotive, construction, and machinery fields across the USA, Switzerland, and China. The company holds ISO 9001, ISO 13485, and IATF 16949:2016 certifications. Its products comply with the ITAR, REACH, and RoHS standards.
Jackson Spring & Mfg. Company Inc., since 1962, has been a manufacturer wire goods and springs for the automotive, agricultural, machinery, fluid sealing, and medical industries. The springs include compression, extension, torsion, and custom springs from carbon steel, copper, stainless steel, and alloy steel wire. The Elk Grove Village, Illinois, company provides surface treatment, passivating, color coating, and CAD design services. The company is ITAR registered, ISO 9901:2015 certified, and IATF 16949:2016 certified.
Badger Precision Spring, Inc., established in 1983, is a manufacturer of custom precision springs and components such as wire forms, compression springs, torsion springs, metal stampings, and extension springs for office equipment, automotive, medical, computers, and switches sectors. The company in Genoa City, WI, provides secondary operations such as spring grinding, automatic & hand looping, hand forming, stress relief, and packaging. The first piece sample is given before production, and the company is a member of the Spring Manufacturers Institute.
ANL Spring Manufacturing, founded in 1976, is a manufacturer of springs, wire forms, clips, rings, and cable assemblies. The springs are compression springs, extension springs, torsion springs, die springs, and washer springs used in the electric, manufacturing, industrial, processing, and automotive sectors. Situated in Detroit, Michigan, the company has manufacturing capabilities such as heat treating, welding, machining, electropolishing, and galvanization using materials such as low carbon, phosphor bronze, stainless steel, beryllium copper, and zinc dichromate.
John Evans' Sons established in New Haven, Connecticut, in 1850 is a manufacturer of constant force springs, torsion springs, and spring-powered reels/ Their product range includes helical springs, vibration isolators, wire forms, stampings, and mechanical assemblies. The company has a global distribution network, and their products are used in industries such as aircraft & aerospace, medical devices, window manufacturing, and electric motors. In 1967, the company changed ownership, and moved 20 miles northwest of Philadelphia, to Lansdale, Pennsylvania, its current office.
Qianye Precision Metal Co., Ltd., established in 1998, is headquartered in Dongguan, Guangdong, China, and is a manufacturer and distributor of precision springs and related components. The company specializes in the design, production, and distribution of precision springs and related components. The company's product range includes compression springs, extension springs, torsion springs, and wire forms. The company's products cater to a diverse range of industries, including automotive, electronics, aerospace, and medical. Holding the esteemed ISO 9001:2015 certification to maintain quality and adhere to international standards.
ASRaymond, founded in 1883, is a manufacturer and supplier of springs, metal components, functional assemblies, and hardware solutions. The springs comprise compression, lock-in-place, traction, and reducible force springs with spring washers and speed reducers. Mounting hardware includes ball studs, mounting brackets, end-fittings, and accessories utilized in the construction, aerospace, lift equipment, medical, and military industries. The Ste. A Maumee, Ohio-based company is ISO and TS certified and provides application engineering services, distribution and packaging, finishing and coating, warehousing, and customisation choices.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | SPIROFLEX |
5.6%
|
| 2 | Automated Industrial Motion |
4.8%
|
| 3 | Takachiho America, Inc. |
4.8%
|
| 4 | Jackson Spring & Mfg. Company Inc. |
4.8%
|
| 5 | Tech Spring Manufacturing Corp. |
4.8%
|
| 6 | EMMOTT |
4.0%
|
| 7 | SMSC |
4.0%
|
| 8 | ANL Spring Manufacturing Company. |
4.0%
|
| 9 | ASRaymond |
4.0%
|
| 10 | General Wire Spring Co. |
4.0%
|
Derivation Method
The ranking is calculated based on the click share within the constant force spring page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
17 | 68.0% |
|
China
|
3 | 12.0% |
|
Japan
|
2 | 8.0% |
|
United Kingdom
|
2 | 8.0% |
|
Taiwan
|
1 | 4.0% |
7 products found
7 products
Hayami Hatsujo Co., Ltd.
90+ people viewing
Last viewed: 1 day ago
It is used for the purpose of always obtaining a constant output. ■Applications ・Cup holder ·ashtray ・Tools etc.
Toyo Zenmai Co., Ltd.
40+ people viewing
Last viewed: 21 hours ago
■Product overview A spring that is tightly wound with a constant curvature over its entire length. Also called constant torque spring, constant out...
Accurate Co., Ltd.
100+ people viewing
■Series common specifications ・Material Spring part: SUS301CSP, Drum: Polypropylene ・Drum shape and tip subplate vary depending on product size.
Komatsuzaki Co., Ltd.
40+ people viewing
Last viewed: 20 hours ago
Standard Response
Standard constant force springs are also available.
Samini Co., Ltd.
60+ people viewing
Last viewed: 2 hours ago
■Unit price by order quantity (yen) ・1-9: 1,350 ・10-19: 1,250 ・20-49: 1,000
Samini Co., Ltd.
50+ people viewing
■Unit price by order quantity (yen) ・1-9: 3,650 ・10-19: 3,100 ・20-49: 3,000
Samini Co., Ltd.
60+ people viewing
■Unit price by order quantity (yen) ・1-9: 5,300 ・10-19: 4,400 ・20-49: 4,150
