spring measurements

As the design of custom springs evolves, so too must the processes and techniques that go into testing them. Whether testers are using load and free length testing on compression springs or any other process, the methodology must be updated to keep up with new spring designs.

How Springs Are Tested

The testing method applied depends on the spring and its desired application. In general, spring performance testing involves load/rate testing — a methodology that measures the spring’s load and length at 20 and 80 percent, respectively, of the either the spring’s rated load or length. The measuring system that test load/rate should be accurate to at least +/- 0.5% of full scale. If being used to determine length at a variety of load limits, measurements need to be compensated for the deflection of the load application and measurement system along with the spring when loads are applied.

Testers also use the load/rate testing on extension springs, with the difference being that the measurements are taken while the spring is in extension, rather than when compressed. Extension springs also have initial tension since they are in a compressed state at rest. The load that is applied to extension springs separates the active coils.

Innovation in Spring Testing

Newer spring testing innovations are used in high-volume testing environments and specially designed to take precise measurements that are repeatable. Because these systems use new measurement software, operators can easily perform testing faster but with the same reliable results. The sophisticated spring measurements taken by testers ensure that each custom spring fits the desired application and measurements provided by spring customers.

Ensuring Quality

As precision spring manufacturers, it’s our pleasure to deliver precise wire products made from quality materials, all while ensuring that the final product meets our customers’ precise specifications.

We will work with you to create a custom spring design that fits your application. Simply fill out our request a quote form to tell us more about what you need in your custom springs.