We design and manufacture a complete selection of constant force springs that can be used for various applications, across virtually every industry, from healthcare to aerospace and within general household items.

This blog will look at what a constant force spring is, common applications and how we design these widely used mechanisms.

What is a Constant Force Spring? 

Constant force springs (or constant torque springs) get their name because their force of motion is at constant exertion. The load is determined by the width and thickness of the material and the diameter of the coil.

The tightly wound roll works in a linear movement and does not obey Hooke’s law (F=kX) but constantly produces force throughout its deflection.

These springs provide a smooth range of motion and a constant load in extending or retracting. The full load of the spring is reached after being deflected to a length equal to 1.25 times its diameter and it can sustain a constant force regardless of the extension length.

Constant force springs can be fitted in a variety of ways and extended either partly or completely, which allows them to be used for a range of applications because of the lack of limitations on extension speed and acceleration.

Fitting a Constant Force Spring 

The fitting can be completed in a number of ways. For long extensions, the spring must be laterally guided to prevent movement in a sideways direction — suitable play on each side is 0.5 – 1.5 mm. 

When fitting on a bearing or conduit, the spring can be located using its own force providing that sufficient strip length remains on the bearing. If there is no operating extension limit in the application, we recommend that a screw or rivet is used to secure the inner end of the spring.

Our standard springs and slide bearings are normally supplied separately. Fitting is done by loosening the outer end of the spring and winding it onto the bearing (securing it if necessary), after which the complete spring is wound onto the bearing.

Constant Force Spring Applications  

A constant force spring is an excellent device for applications where a constant load is required. The many benefits of these springs make them suitable for a number of applications. 

The spring itself has a small space requirement which allows it to provide a smooth range of motion. With no inertia to overcome, constant force springs are very versatile and can mount to existing hardware, as well as create a counterbalancing effect. 

Constant force springs are widely used across the medical and healthcare industries to improve surgical devices. They are also used regularly in aviation to deploy and retract aircraft doors and efficiently counterbalance aeroplane windows.

You will also find constant force springs in many day-to-day applications, such as door closers, hairdryers, gym equipment, electric motors, cabinet furniture components and much more.

Innovative Design and Technology 

We’ve been designing springs for over 70 years, and so our range is exceptionally varied and technologically advanced. Besides our standard range, we can provide customised solutions using design capabilities that feature our advanced, proprietary spring design software.

Our software package has been developed in-house and we can simulate any type of application, which enables us to calculate the force required for your particular design. 

Our regular constant force springs are wrapped on a drum with the free end attached to the loading force. However, your preferred mounting method will impact the way we design your spring.

Our skilled design team can help by determining a suitable method to rule out any problems, even if you haven’t decided upon the exact specifications.


As an experienced spring manufacturer, we have the expertise to create a whole host of springs perfect for any application within any industry.

Take a look at our stock catalogue for more information on our range of springs and forms. Alternatively, get in touch with us directly at info.bec@oldeuropeansprings.sqsite.co.uk, we’d love to hear from you.

As bespoke spring manufacturers, we see many uses for springs throughout various industries, and it’s fair to say that the world would be a very different place without them.

The versatility and number of applications make springs and bespoke pressings particularly popular in the fitness industry. 

Springs play an essential role in a wide range of machines and equipment you’re likely to use at the gym. So, let’s take a closer look at how and where springs are used.

Resistance Training and Machinery 

Springs have an important job of creating resistance, as well as safeguarding machines during a workout.

When resistance is created with wiring or bands, it’s a form of spring. For example, when you pull on a machine and the weights lift, they reach a ceiling. High-quality machines will have springs built around the ceiling, which protect the machine so that the weights naturally push off of the spring.

Springs have an important job of creating resistance

The use of long coiled springs for resistance training can also be applied to more traditional forms of equipment, such as the spring rowing exerciser or leg foot spring exerciser.

Multi-Station Trainer  

A multi-station trainer is a form of strength and resistance training that incorporates lockable gas springs to increase pressure. 

This reliable piece of gym equipment is popular as it offers an intense full-body workout, allowing you to build muscle in various ways.

Chest Pull Expander 

Chest expander cables are an effective exercise for building strength. This versatile piece of equipment works by applying resistance to a variety of areas on the body through a simple pulling motion.

Depending on your pull’s strength, the elastic rubber cables in the chest expander provide variable resistance. 

These cables/bands became popular in lockdown due to their affordability and effectiveness in promoting ligament and tendon strength.

Personal Trampolines 

Springs are used in trampolines to provide rebound and bounce. Exercise trampolines allow you to incorporate fun into your workout, boost cardiovascular health, as well as relieve tension and improve endurance.

springs trampolines rebound and bounce

Generally, the cost of the trampoline will reflect the quality of the springs and materials used. For example, high-quality springs are manufactured at an increased cost to be longer-lasting and provide a smoother stretch, ultimately giving you a better bounce. 

Hand Forearm Grip 

Hand forearm grips are ideal for building resistance and endurance in your fingers, as well as strengthening your wrists and forearm muscles. 

Like the chest pull expander, these handy grips work by applying pressure with your hand around a resistant spring. Through resistance, you can build forearm strength and improve other muscles, like biceps, triceps, and shoulders.

Shock Absorption Treadmills 

There are plenty of shock absorption treadmills on the market, each containing springs in the belts, decks and shock systems. 

The shock absorption treadmill operates in the same way as a traditional machine, however, it is built to absorb any severe pressure increases. The springs and shock absorbers work to ensure that the rebound holds less of a negative impact on your joints.

It’s important to choose a quality shock absorption treadmill if you wish to protect your joints and reduce the risk of injury or pain in the long term.

Shock Absorption Treadmills

Shock Absorbing Running Shoes 

It may not seem obvious at first, but some shoes also use a traditional spring to protect your foot from continued heel strike — heel striking can lead to additional strain on your knees.

Many shoe manufacturers are now incorporating springs into their design, with some having been accused of “technological doping” in the world of athletics.

In particular, Nike has received scrutiny over their Alphafly running trainer. Athlete Eliud Kipchoge became the first person to run a marathon in under two hours, and he did so in a prototype of the Nike Air Zoom Alphafly Next%.

The World Athletics President commented, saying that “It is not our job to regulate the entire sports shoe market, but it is our duty to preserve the integrity of elite competition by ensuring that the shoes worn by elite athletes in competition do not offer any unfair assistance or advantage”.

While this is fascinating stuff for the use of springs in technology and the fitness industry, regulations have now been brought in due to revolutionary new foams and the development of shoes containing carbon fibre plates.


With over 70 years of experience as a spring manufacturer, we have the expertise to create a whole host of springs perfect for any application within any industry.

If you’d like to find out more, please look at our brochure (PDF) or contact our experienced team today to discuss your next project with us. We’re here to help!

With many businesses in the manufacturing and engineering sector heading back to work in recent weeks, there has been some trouble getting back to normal working practices for some. With social distancing measures a requirement within the workplace, it has been challenging for many in the sector to maintain high production standards.

Businesses who had previously invested in robotics and AI technologies prior to the outbreak have found the transition a much smoother process, and in this article, we will explore some of the reasons why. We will also take a closer look at how robotics are already being used within a number of industries around the world to minimise the risk of infections.

Manufacture robot

Robotics Leading The Way In Deep Cleaning Practices

One of the main ways that robotics is helping to tackle the COVID-19 outbreak is by assisting in deep cleaning methods in premises throughout the world. In some areas, it is simply too dangerous for humans to go in and deep clean all areas of a premises, and this is where robots come in.

Danish manufacturer, UVD Robots, has seen a huge spike in the number of machines being ordered across Europe and in China. The company specialises in ultraviolet-light-disinfection robots, which are capable of replacing cleaners in many settings. There is obviously worldwide demand for robots with cleaning capabilities, as they are far more likely to maintain more rigorous cleaning regimes than their human counterparts; all of which is required in a pandemic such as this.

Outside of manufacturing, American retail giant, Walmart, are using robots to scrub their floors instead of humans during the coronavirus outbreak. There is plenty of evidence to suggest that many other industries and companies around the world will adopt similar measures in the coming months to reduce the chances of cleaners coming into contact with harmful bacteria on a daily basis.

With robots now capable of leading the way when it comes to deep cleaning practices, employees can rest assured that each day after they finish their shift, a robot will have effectively cleaned up their workspace by the next morning. This will give all employees peace of mind that they are working in as safe an environment as possible, whilst also giving employers confidence they are continuing to abide by social distancing and cleaning best practices during the coronavirus pandemic.

Concept of a Robot that vacuums digits on the floor. 3D illustration. Isolated. Contains clipping path

Robotics Helping Businesses Prepare For The Future

With social distancing measures set to stay in place for the foreseeable future, with some experts stating they could roll over well into 2021, robotics is set to play a vital role in manufacturers getting back to normal operational levels in the coming months. AI technologies have long been used within the engineering and manufacturing industries, but now is the time to review existing processes and identify opportunities for machines to take on some of the more menial tasks normally carried out by humans in the workplace.

One of the main way’s robotics can help businesses in the short term is by taking on the role of some employees, to aid with social distancing measures in the workplace. If manufacturers are able to ensure that robots successfully carry out repetitive tasks that were once carried out by employees, they can reduce the need for as many employees in the business at any one time. This is a vital step for employers to take, and could help minimise the risk of transmission of coronavirus within the workplace.

It’s also worth noting that manufacturers who already have robotic technologies integrated within their existing business model will have a kickstart when they get back to work. All tasks that were originally carried out by robots can continue to be carried out right away, meaning that no social distancing measures are required to be put into force. Productivity can pick up exactly where it left off for some components, whilst managers focus their attentions on enabling employees to come back to work in a safe environment.

At the Factory: Automation Engineer Uses Laptop for Programming Robotic Arm. New Era in Automatic Manufacturing Industry.

Here at European Springs & Pressings, we have been fortunate enough to continue working safely throughout the entirety of the pandemic thanks to a combination of forward planning and robotic technologies we have invested in over the years. Our team have adapted well to working under new social distancing guidelines, whilst continuing to provide vital components for a variety of healthcare equipment, such as ventilators.

As one of the country’s leading spring manufacturers with over 70 years’ experience in the industry, we realise just how important it is to continually invest in the very latest technologies to continue expanding our output capabilities on a consistent basis. That’s why we have always taken steps to purchase the very latest manufacturing equipment and robotic innovations that are capable of assisting us with manufacturing processes, which has allowed us to be in the position we are in today.

With the recent release of the IDC report “IDC FutureScape: Worldwide Manufacturing Predictions 2018”, the team here at European Springs couldn’t help but think about what the future holds for the industry. When this firm conjured up its predictions they examined experiences and ecosystems, greater intelligence in operational assets, processes, data and convergence of IT.

While many of these predictions consisted of a change in digital transformation on a wider scope, there will be many impacted technologies; a prominent one being the evolution of cloud-based technologies. With this in mind, what are some of the notable changes and developments we will see, not just in 2018, but beyond?

Continue reading “2018 and Beyond: 5 Predictions for Manufacturing and Engineering”

Springs are a fascinating creation which are used throughout the world on a daily basis. One of the great things springs offer is their functionality for numerous industries, from engineering, to automotive and healthcare. Springs are hidden in many medical applications, contributing greatly to our health. Continue reading “How Springs Can Help Your Health Part 2”

Springs. They are a humble invention which we may not realise serve us in more than engineering and science. They are an extremely vital part in our health care and believe it or not are hidden in many utensils and items which help us towards being healthier and happier! From medical assistance to sporting equipment, the modest spring is a secret part of us staying fit, healthy and having a spring in our step.

Here at European Springs we care about all our customers; your health, happiness and keeping you on top of all the exciting news and innovation around the wonderful world of springs. So, how can springs really help your health?

Help Your Health

Trampolines

No matter how young or old, we all love a bounce on a trampoline. Some people do it for fun, however some do it for fitness, which is a huge part in staying healthy. And if it wasn’t for the marvel of the spring, we wouldn’t have trampolines!

You can burn a huge 160 calories per every half an hour of bouncing on a mini trampoline and unlike any other forms of cardiovascular exercise, such as jogging, trampolining has less impact (thanks to the springs) therefore has less chance of the bouncer generating any bone or joint injuries. Not only is it super fun, but it can improve your balance, coordination, your fitness and ultimately your health!

common4

Inhalers

You may not think that inhalers have a spring in them, but believe us, they do! An internal compression spring is what assists the mechanism, so you can relax and breathe easy. Any typical inhaler consists of three components- a metal spring, a metal ferrule and the remaining parts which are either metal or moulded plastic. The spring is compressed and pushes the canister, where energy is stored and thus the dose is given to the user.

Our inhalers help us in our health in many ways. For some, they are a true lifesaver and for others they provide relief. These devices deliver medicine straight to your lungs and are used for most commonly, asthma and COPD.

inhaler

Mattresses

We all know that springs are in most of our mattresses, which we use every single day when we go to sleep. A good night’s sleep is vital for our health, as it is a key player in healing and repairing your heart and blood vessels. Not only does sleep have many benefits for our health, but it makes you feel refreshed and in a more positive mood. Other research says that a good night’s sleep can improve memory, curb inflammation and even spur creativity.

In terms of our health and in healthcare, don’t forget that hospital beds contain springs. These beds are even more important as they facilitate recovery, and the compression springs make sure we are comfortable and correctly positioned.

sleep

Syringes to Surgery

Innovation is a vital driver in the world of healthcare, and without the modern technology and resources we could not have the medical miracles we have seen lately. Not only are coil compression springs and prototype springs used in auto injector syringes, retractable syringes and epi pens, but they are also important in the surgical operating theatre.

Other important items such as tweezers, grips, surgical scissors and even braces rely on internal springs. Machinery such as X-ray machines also depend on springs to work efficiently.

When you take a step back and look at all the medical instruments which make use of spring mechanisms, there may be more than you expected. Where would we be in the world of surgery without the spring?

surgeons

Artificial Limbs

As time has progressed, so has technology, which means our prosthetic and artificial limbs are increasing in quality and strength. Springs are a main component in many artificial limbs, such as arms and hands. Springs are needed to create a joint like movement, such as in the fingers for grip.

Many prosthetic limbs use a spring-loaded shock absorber and flat springs, especially in shins, feet and heels which can act as an Achilles tendon. Springs are becoming the forefront of technology in this field, as people with disabilities are having their lives transformed through the power the spring can have on such technologies.

prosthetic leg

Whatever the project is, European Springs is here to provide the solution, through springs. We always ensure our products are of the highest quality, so no matter if being used for a trampoline or for surgical instruments (or gardening), we can guarantee only the best.

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