Constant Force Springs
De Spiraal's constant force springs deliver a consistent, reliable force over a considerable length. Ideal for applications such as hydraulic systems, safety belts and space restrictions, both standard and customised.
De Spiraal's constant force springs deliver a consistent, reliable force over a considerable length. Ideal for applications such as hydraulic systems, safety belts and space restrictions, both standard and customised.
The constant force spring is a commonly used type within our range of technical springs. It is a flat, coiled strip that offers uniform resistance as it uncoils. As a result, the spring exerts a constant force over a considerable length, rather than the increasing force seen in a extension spring. This difference makes the constant force spring the right choice whenever smooth, predictable movement is more important than an increasing tension force.
Our constant force springs offer the ideal solution for a wide range of applications where uniform force is essential.
From hydraulic systems and safety belts to cable reel systems, window mechanisms, measuring and fitness equipment, and applications in the automotive and aerospace industries, our springs deliver reliable, consistent performance. Constant force springs are also used in sectors such as mechanical engineering, mobility, medical technology and industrial automation for controlled movements and precise force build-up.
Are you facing challenges such as inconsistent forces, limited installation space or the need for efficient energy storage and release? Our constant force springs offer the solution. They deliver constant force over the entire length of the spring and are designed to function effectively in compact spaces.
What's more, they are energy-efficient: they store energy during extension, which is then released powerfully and in a controlled manner during return.
Constant force springs provide stable, uniform resistance throughout their entire stroke length. Unlike conventional springs, the force does not increase as the spring extends further. This makes them the ideal choice for precision systems where smooth and predictable movement is essential, from medical equipment to industrial automation.
We combine a compact footprint with maximum energy efficiency:
The lifespan and reliability of a constant force spring are directly related to the quality of the strip steel and its surface condition. Based on your usage intensity, we recommend the appropriate material:
Type: Stainless steel spring steel
Material number: 1.4310 / 1.4301 / 1.4401
Characteristics: Excellent corrosion resistance; ideal for the medical and food industries.
Is your material not listed, or are you unsure about the right choice for your application? Please contact our team; we'd be happy to help.
Are you working with variable loads or critical installation constraints? Our engineers will work with you to determine the material width, thickness, and drum diameter to achieve the precise force transmission your project requires. Whether it's for a safety system or a precision measuring instrument, we're happy to collaborate with you from the initial sketch. This applies to both single units and larger production runs.
Need immediate technical advice?
Call our specialists at +31 (0)74 291 45 08 or send an email to info@despiraal.nl. We'd be happy to review your specifications.
A constant force spring is a coiled metal band that exerts a constant pull over the entire stroke. They are used in systems such as cable guides, weighing systems, elevators or medical devices.
The spring develops a constant force because the strip continuously unrolls with an equal resistance. This is ideal for smooth, controlled movements.
Yes, we design and deliver customer-specific constant force springs, tailored to force, stroke length, lifespan and installation method.
Applications include monitor arms, display systems, counterweights, locking mechanisms and automatic retractors.
We use high-quality spring steel or stainless steel with a special surface finish for a long and reliable life.
