Open Wound Springs

Definition - Open wound springs are springs that were wound in a machine to have pitch or space in between their coils. Such space allows the spring to compress under a force or load.

All compression springs are open wound springs. A compression spring is actually the most common type of open wound spring. The rest are still other types of compression springs, both linear and non-linear. Magazine springs are a type of linear open wound spring.

Magazine springs may have oval or rectangular shaped coils but they are all the same size thus making this a linear spring. The coils in this spring type are open wound so that they can be pushed/compressed as you start adding new rounds into the magazine. Like compression springs, they also have a constant spring rate so that the travel increases proportionally as more force is applied.

linear open wound springs

There are more types of non-linear open wound springs than there is linear ones. This isn’t because they are more popular, but because of functionality. You are able to do more variations to a compression springs which make it non-linear, and therefore more abundant. That includes playing with the outer diameter and pitch.

There are four types of non-linear open wound coil springs. These are conical/tapered springs, barrel springs, barbell springs, and dual pitch springs. They all have variable outer diameters except for the dual pitch spring.

Conical tapered springs have a large coil diameter on one end and a smaller coil diameter on the other end. This spring`s coils gradually close/open until they get to the last smaller/larger coil.

Barrel and barbell springs are similar except they look like they are made of two conical springs. Barrel springs will have the large outer diameter in the middle of the spring’s body thus having a barrel shape.

Barbell springs are the opposite, they have the smaller coil diameter within the spring’s body and large coil diameters in the end. This makes them have a type of hourglass shape.

Dual pitch open wound springs are very similar to your average compression spring. The different amounts of pitch between the coils of the body are what makes this a non-linear open wound spring. The side of the spring with less pitch will have more elasticity and less force than the side with more pitch. You may also find springs with variable pitch that have more than 2 sections of spring pitch but they are not very common.

non-linear open wound springs

Compression Spring Finder

Find and buy stock compression springs in two simple steps using Spring Finder. This easy to use search engine makes it easy to find and buy the stock spring you need.

The following simple steps will get you started:

In the basic search, you can enter:

For the advanced search, you must select “Search More Fields”. Here you can enter:

Once you’ve entered your spring’s specifications, click “Search”.

The following are the specifications you can select to organize your search:

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Extension Spring Finder

Find and buy stock extension springs in two easy steps using Spring Finder. This simple tool makes finding the stock tension spring you need a fast and productive task. Search through over 4,000 designs off the shelf.

The following simple steps will get you started:

In the basic search, you can enter:

To access the parameters in the advanced search, click on “Search More Fields” where the following dimensions will be available:

The fields are not mandatory so you can choose whatever dimension you feel needed and click “Search” once you have done so.

These are the specifications you can organize your extension springs by:

Spring Finder Results in Table

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Torsion Spring Finder

Find and buy stock torsion springs in two easy steps using Spring Finder. This simple tool makes finding the stock torsion spring you need a fast and productive task. Search through about 1,000 designs off the shelf.

The following simple steps will get you started:

In the basic search, you can enter:

To access the parameters in the advanced search, click on “Search More Fields” where the following dimensions will be available:

The fields are not mandatory so you can choose whatever dimension you want and click “Search” once you have done so.

These are the specifications you can organize your torsion springs by:

Spring Finder Results in Table

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Conical Spring Finder

Find and buy stock conical springs in two simple steps using Spring Finder. This easy to use search engine makes it easy to find and buy the stock spring you need.

The following simple steps will get you started:

In the basic search, you can enter:

For the advanced search, you must select “Search More Fields”. Here you can enter:

Once you've entered your spring's specifications, click “Search”.

The following are the specifications you can select to organize your search:

Spring Finder Results in Table

Spring Finder Results in Grid View

Open Wound Springs

Definition - Open wound springs are springs that were wound in a machine to have pitch or space in between their coils. Such space allows the spring to compress under a force or load.

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