Buy Extension Springs Online

Order Monday-Thursday before 15:30 and Friday before 14:45 and we&#;ll dispatch your order the same day with expected delivery within 2-4 days. This applies to all stocked extension springs

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See quantity discounts and prices by clicking on the shopping cart next to the required product.

With the help of our range sliders, we&#;ve made it quick and easy to navigate our range of standard extension springs in more than 3,000 different sizes.

We have everything from small extension springs to large extension springs used throughout industry and privately. The selection of standard extension springs is provided in lengths ranging from 6.35 mm to 377.00 mm (unloaded state).

The selection is produced in accordance with current DIN standards with the highest quality demands in Europe and America.

What is an extension spring?

An extension spring is used where traction is needed, for instance in industrial and agricultural machinery. Both large and small constructions.

An extension spring accumulates a force when the spring is pulled apart. The longer you stretch it, the more force is accumulated. The force is released when the spring is allowed to return to its original length. If an extension spring is designed and used correctly, it can be used for a prolonged period. For further information, see under &#;Service life&#; in the technical information below.

Piano wire: dry environment

Piano wire springs are recommended for use in dry environments. The material offers no protection against rust. Piano wire springs are approximately 10% stronger than stainless steel springs.

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Electrogalvanised extension springs are made from piano wire, which is then electrogalvanised. This gives the extension springs an attractive, shiny surface. Electrogalvanisation only provides moderate corrosion resistance, but if the spring is used in a humid environment, the service life will be prolonged compared to the same spring made from piano wire without surface treatment.

Stainless steel wire: humid environment

For humid environments we recommend springs made from stainless steel wire. Stainless steel extension springs are approximately 10% weaker than piano wire springs.

If you use springs in environments where they are exposed to harsh chemicals or salt water, we recommend springs in a specific type of stainless steel (AISI 316). We do not keep these in stock, but we can custom-produce them on request. Contact us for further information.

Springs for cutting and testing

If you are unsure about the length/travel you need, we have springs in lengths of 300, 500 and 1,000 mm manufactured specifically to be cut to length and used for prototypes and testing. Sort by lengths using the slider below.

Note: These springs do not have loops. They must be bent up by the customer, following cutting to the desired length, if necessary. To extend the service life, we recommend that the bends are made as soft bends, not sharp bends or notches.

After sorting the products in the order of your choosing, you can start looking through the list to decide which spring will work best. You can find the spring based on the maximum load or the maximum deflection. When you find the spring that meets your load and travel requirements, you can then check whether the spring rate meets your working loads. Furthermore, you can check pricing at different quantities by clicking on the Quick View icon.

If you still need help deciding select your springs and &#;Add to Compare&#; by clicking on the icon of two circles joined together on each product. This is to be able to compare them side by side in a more efficient manner. To enter the Compare Products page, find the link at the top of the page. Then, just quickly add them to your cart to complete your order. If you need further assistance finding your springs, you may contact our team of experts to help you out. Our engineers can help answer your questions and assist you in finding the correct spring for your application.

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