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Extension Springs from Lee Spring provide a solution to problems of linking components in a way that absorbs and stores energy, as well as creating resistance to a pulling force. They are pre-loaded to create an initial resistance which keeps linked components in place with a variety of end types possible. Where pre-load is not required they can be supplied with inter-coil spacing for zero initial tension.

Applications for extension springs include automotive interiors and exteriors, garage door assemblies, vise-grip pliers, carburettors and butterfly valves, trampolines, washing devices, farm machinery, toys, as well as thousands of other uses. Extension springs come in a wide array of sizes to suit everything from small medical devices to off-road machinery brake springs.

The complete Lee Spring extension spring package includes loop ends in cost-effective music wire or corrosion-resistant stainless steel.  Speciality ordering available for hook ends, extended eyes or swivel bolt fixings.

Lee Spring also offers enhanced extension performance in their Drawbar design which uses a compression spring to provide a solid stop and safety retention. The Drawbar design also enables higher loadings than are usually possible in a normal extension spring design.

Extension springs are attached at both ends to other components so that when these components move apart, the spring tries to bring them together again. Extension springs absorb and store energy as well as create a resistance to a pulling force. It is initial tension that determines how tightly together an extension spring is coiled. This initial tension can be manipulated to achieve the load requirements of a particular application. Extension Springs are wound to oppose extension – they are often tightly wound in the no-load position and have hooks, eyes, or other interface geometry at the ends to attach to the components they connect. They are frequently used to provide return force to components that extend in the actuated position.

Lee Spring

Britain’s No1 spring company…

…with over 16,000 different types of round wire compression, die, extension, torsion springs and disc springs. Our portfolio of products amounts to literally millions of springs – more stock, more choice and more product lines than any other spring supplier in the UK.

Britain’s No1 spring company…

…with over 16,000 different types of round wire compression, die, extension, torsion springs and disc springs. Our portfolio of products amounts to literally millions of springs – more stock, more choice and more product lines than any other spring supplier in the UK.

All are available for despatch on the day you order them.

Our spring ranges reflect the most commonly requested sizes but we also offer a range of specials including conical springs, swivel hook springs and drawbar springs. As always the range is supplemented by a custom spring design and manufacture service as well as selected spring kits.

Total Commitment to Quality

Our quality system is assessed by and registered with Bureau Veritas Quality International to the requirements of BS EN ISO 9001:2000 – certificate number 5692. This approval is the cornerstone of our service and commitment to total quality management.

Batch traceability is a standard procedure on all orders, regardless of quantity. Batch codes are fixed to all packages prior to despatch – the same coding appears on customers’ packing notes and our file records. Full traceability is achieved from raw material in-take to finished products. Certificates of Conformity are available.

Discounts

We are happy to offer discounts on large orders. It is also worth noting that you do not necessarily have to take your entire order in one delivery. You can total your requirements and place a scheduled order and still receive a price reduction.

Whether you are ordering one spring or thousands we welcome every enquiry and each order receives the same professional service.

Same Day Despatch

Order Today Despatch Today, that’s our service. Whatever your requirements for springs, from repairs to development, small prototype batches or production quantities, we can help you with your selection.

If you are a new customer we will open an account immediately. Credit Card facilities are available.

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