Tension Spring Manufacturer
Precision That Simply Lasts—Project-Specific Tension Springs for Long-Term Reliability.
Tension springs counteract tensile forces, cushion movements, and reliably return components to their initial position. In technical assemblies, they perform return, clamping, and compensation functions in applications that undergo hundreds or thousands of cycles every day.
Where precision tension springs work reliably
Building Systems & Fire Protection
From roller shutters to insect screens: Tension springs ensure thousands of operating cycles:
durable, weather-resistant, low-maintenance.
Electrical Industry
From switching contacts to connectors: tension springs with precise preload for long-lasting conductivity and maximum switching reliability.
Vehicles & Motorcycles
From the side stand to the brake mechanism: Heavy-duty tension springs designed to withstand extreme vibrations, with corrosion protection and maximum durability.
Tension Spring Manufacturing in Detail
Tension springs, often referred to as compression springs, store energy through controlled elongation and ensure that moving components return forcefully to their initial position. Unlike compression springs, they operate under tensile load, with the preload force—even when the spring is relaxed—serving as the basis for stable operation. We manufacture your screw-type tension springs with custom spring ends, such as hooks or German-style eyelets, to ensure reliable force transmission in your assembly.
The fact is:
Dynamic loading should be avoided in tension springs, as surface hardening to increase strength is technically nearly impossible. If such use is unavoidable, bolted or rolled-in end pieces ensure the necessary operational safety. The eyelet transitions are particularly critical, as stresses can occur here that far exceed permissible values. Our project-specific design minimizes the risk of fatigue fractures and ensures your quality promise where conventional springs fail. Simply precise.
Our tension springs are characterized by:
- Certified Quality:Maximum process reliability through certification to ISO 9001 and ISO 14001
- Custom-fit eyelet shapes:rolled hooks, screw tabs, German-style eyelets, or custom shapes tailored to the force application and installation conditions
- Defined Preload Force:Specifically adjusted for suspension with optimized overall length and zero play
- Wide range of materials:From patented drawn spring steel to stainless steel for corrosive environments
- Alfred Weigel's tension springs are designed specifically for each project based on your drawing, a sample, or functional requirements. This ensures consistent quality and reliable performance from the first prototype spring through to mass production.
Standard vs. Custom Tension Springs
Your Benefits at Alfred Weigel Federfabrik
Standard solution
- Fixed geometries and dimensions
- Frequent compromises between spring force and installation dimensions
- Limited selection of eyelet shapes
- No adjustment for specific environmental factors
- limited functionality
- often compromises in installation and service life
Weigel Spring Factory
Custom Tension Springs from Alfred Weigel
- Design based on drawings, samples, or functional requirements
- Adaptation to installation space, spring force, and mounting conditions
- Careful selection of materials to withstand environmental and media influences
- A wide variety of eyelet shapes and surface finishes/treatments are available
- Reliable performance throughout its entire service life
- Consistent quality from small-scale prototype production to mass production
When is a custom tension spring particularly worthwhile?
- if the shape of the eyelet needs to be precisely tailored to your installation situation
- when the preload force and spring characteristic curve are critical to the assembly’s function
- when the spring is subjected to a dynamic load
- when environmental factors such as moisture, corrosive substances, or elevated temperatures place special demands on the material
Designing a tension spring specifically for a project prevents failures caused by insufficient preload, incorrect eyelet geometry, or unsuitable materials, thereby laying the foundation for a stable solution suitable for mass production.
Manufacturing Features of Our Tension Springs
The performance of a tension spring results from the precise coordination of geometry, material, and manufacturing details. Since every application has its own requirements in terms of load-bearing capacity and installation space, a project-specific design forms the basis for reliable operation. We don’t just supply you with a component—we provide a solution that seamlessly integrates into your processes.
- Custom Eyelet Shapes: Depending on the available space, we help you choose the optimal attachment method. This could include, for example, German-style eyelets, rolled hooks for quick handling, or stem eyelets. We develop custom solutions to ensure maximum safety under dynamic, continuous loads.
- Variable Spring Geometry: We design the spring body to precisely meet your requirements. Since the physical limitations vary with each new design, we determine the exact feasibility in consultation with you. We immediately verify whether your specific parameters are feasible. Simply contact us to request your specific geometry.
Selected Applications in Tension Spring Manufacturing
Prototyping and Sample Production
Tension springs are frequently used in assemblies where it is only clear once they are actually installed whether the spring force, eyelet shape, and preload are truly suitable. Particularly for applications subject to dynamic loads with a high number of cycles or tight tolerances, a targeted prototyping and testing phase is recommended before the start of series production.
- Based on your drawing, a sample, or the functional requirements, we produce initial prototypes that can be tested in the intended system. Feedback from assembly, testing, or endurance tests is directly incorporated into the optimization of the tension spring. This allows adjustments to be made before mass production begins.
This structured approach reduces the need for adjustments during production, minimizes rework, and provides planning certainty for subsequent mass production. The transition from prototype to production parts is traceable and stable.
Additional Services Related to Tension Spring Manufacturing
In addition to manufacturing individual tension springs, we also support you with complementary services that simplify their use in mass production and reduce interfaces. Our goal is to provide a solution that is not only technically suitable but can also be efficiently integrated into your processes.
Combination of return springs with spring shafts, stamped and bent parts, or other functional components.
We can handle even small quantities or special requirements.
Packaging solutions tailored to logistics, assembly, or further processing.
For A-tier customers: Predictable supply, reduced effort in purchasing and warehousing.
All services are provided on a project-by-project basis and upon request. This ensures that you receive exactly the scope of services that makes sense for your application.
Upload drawings, illustrations, or functional descriptions directly through our contact form.
We will work together to determine the installation space, load, material, and operating conditions.
We’ll advise you on prototype manufacturing and plan the next steps.
Transition to mass production following technical approval.
Inspection of manufactured parts for quality characteristics, as well as outgoing goods inspection to ensure consistent quality.
Reliable delivery with dedicated contacts.
Check out our other topics!
Here at Federn Weigel, we manufacture the right technical springs for you. Custom-made to meet your requirements.
Have a Tension Spring Made Now
Do you need a tension spring for your application—whether as a prototype, small-batch part, or production part? With this information, we can respond quickly and effectively:
- Drawing or sketch of the tension spring
- Sample or reference part (if available)
- Desired eyelet shape, installation situation, and available installation space
- Function of the Tension Spring in the System
- Planned Demand (Prototypes, Small-Volume Production, Mass Production)
You can upload drawings, sketches, or photos directly using our form.
Questions and Answers About Tension Spring Manufacturing
When is a special technical design of the tension spring ends necessary?
Under dynamic loading, screwed or rolled-in end pieces are necessary, since stresses significantly exceeding the permissible values can occur at conventional eyelet joints, and surface hardening by shot peening is virtually impossible for tension springs.
Can tension springs be designed for mass production processes?
Yes. At Alfred Weigel, tension springs are designed to meet production specifications and are tailored to reproducible manufacturing processes to ensure a consistent spring characteristic curve throughout the entire production run.
What is the preload of a tension spring?
Preload is the internal force present when the component is unloaded. It prevents play, enables compact designs, and is an important part of the technical design.
Are tension springs suitable for outdoor use?
Yes. When made of stainless steel (e.g., 1.4310) and treated with appropriate surface finishes, tension springs remain fully functional even when exposed to moisture, UV radiation, and temperature fluctuations.
Are there tension springs for fire protection applications?
Yes. Tension springs with a specified actuation force are manufactured for fire dampers, smoke and heat exhaust systems, and self-closing doors. Various quality control tests can be performed.
Can I request prototypes for a new application?
Yes. Even if a complete drawing is not yet available, we can assist with the design. Based on a sketch, a sample, or a functional description, we produce prototype springs for testing in an actual installation. This prevents costly adjustments after production begins.
What information is needed to submit a request?
It is helpful to provide a drawing or sketch, a sample (if available), details about the installation situation, the spring’s function, and the planned application (prototype, small-batch production, mass production). Click here for the contact form.
Can tension springs be surface-treated?
Yes. Depending on the application, tension springs can be treated with appropriate surface coatings to improve corrosion resistance, durability, or functional properties such as conductivity.
Is custom packaging also available?
Yes. Packaging solutions can be tailored to logistics, assembly, or further processing and are provided on a project-by-project basis upon request.
