As a spring manufacturer with over 70 years of expertise, we create long lasting, high-quality constant force springs designed for various applications. ISO 9001 certified production, end-to-end capabilities, and precision engineering ensure the highest standards in our components.
We understand that there are some applications that require an entirely bespoke product, whereas others can be fitted with standard stock solutions – which is why we offer both custom and stock springs. Our catalogue contains all the technical information you might need to place an order, including required dimensions, application methods, and fitting details.
Alternatively, if you require a tailored constant force spring, our end-to-end process means you have a say from initial design right up until final quality checks. We can advise you on whether you need a bespoke spring, the material choice, and any other considerations, including surface treatments.
We’re able to produce custom constant force springs for applications that have specific requirements, such as exposure to extreme temperatures, corrosive elements, or tight spaces. When making a custom component, we collaborate with you at every stage from initial consultation to final results, ensuring complete customer satisfaction.
Constant force springs have a force of motion that’s at constant exertion. Constant force springs get their name as their force of motion is at constant exertion. The tightly wound roll works in a linear movement and does not obey Hooke’s law (F=kX), which allows it to constantly produce force throughout deflection.
Our stock constant force springs are made from steel strip (either texture rolled carbon steel or stainless steel).
Because the restoring force of a constant torque spring is concentrated in the portion of the ribbon nearest the roll, these springs have practically no limitations on extension speed or acceleration, making them highly versatile for a range of industrial applications. In our spring catalogue, you’ll find more details on:
For more technical information on our constant torque springs, please visit pages 108-112 of our catalogue.
As experienced constant force spring manufacturers, we engineer constant force springs of the highest possible quality, and are dedicated to providing our customers with the best service possible. We’re a part of the international Lesjöfors Group, meaning we have access to a global network of expertise, advanced materials, and state-of-the-art manufacturing technology.
If you’d like more information about any of the springs or pressings we manufacture, whether compression springs, torsion springs, or other products from our catalogue, please contact our knowledgeable team, who can provide helpful advice. Whether you need small-batch custom designs or high-volume production, European Springs & Pressings is your trusted partner for reliable constant force spring solutions.
Beyond spring manufacturing, we offer a full suite of supporting services to streamline your project from design to delivery, including surface treatment, sub-assembly, and prototyping.
Our constant force springs are used in many industries, including;
A constant force spring is made from pre-tensioned strip material wound into a coil. It provides a nearly constant force throughout its linear motion and can be extended partly or fully.
Spring life is cycle-dependent rather than time-dependent. It is determined by the ratio of spring diameter to material thickness. For high-cycle applications, the spring may need replacing after reaching the recommended number of oscillations.
Constant torque springs can be mounted on shafts, bearings, conduits, in location pockets, or on movable devices. Long extensions require lateral guidance (0.5-1.5mm play) to prevent sideways movement. Inner ends may be secured with screws or rivets if there is no fixed extension limit.
Here is an inclusive list of the main sectors and applications where Constant Torque Springs improve designs and make a positive difference.
And even if we don’t have exactly the tool we need, European Springs’ in house technology enables us rapidly to design and make complex tools, allowing us to offer more competitive prices.
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