spring dimensions

The length of a spring is essential to a mechanical spring. It’s also a component of spring design that is no problem for our experts at The Yost Superior Co. for two reasons:

#1 We Have Over a Half Million Pounds of Wire Onsite

We have a huge selection of materials, allowing you to choose the right wire for your spring. We also have enough of it that we can make any number of springs for you at any length.

Learn more about our types of spring wire.

#2 We Can Help You Determine the Length Your Springs Need to Be

Determining the length of a spring is more complex than taking a ruler and measuring from one end of the coiled spring to the other. There are many ways to measure a spring:

Length of the Spring Wire Per Coil

What we will need to do is calculate the spring wire length per coil. This can be done by subtracting the wire diameter of the spring from the outer diameter. This will give you the mean diameter of the spring.

Now that you have the mean diameter, you can multiply it by Pi (3.14) to get the length of the wire per coil.

Calculate the Spring Wire’s Length

Getting the length of the spring wire depends on the type of spring you are working with:

  • Compression Springs: multiply the length of the spring wire per coil by the total number of coils.
  • Extension Springs: multiply the length of the spring wire per coil by the total number of coils. Then add two coils to the active number of coils to get the total length.
  • Torsion springs: multiply the length of the spring wire per coil by the total number of coils. Then add the leg lengths to get the total.

Converting Your Measurements to Feet

Because you are using Pi, the total length of your spring measurements will not be in the standard system of measurement (inches and feet). To convert your total number to feet, divide your final number by 12.

How Long Do Your Springs Need to Be?

Remember that the length of your springs is only one part of the equation. To get more information on spring pricing, request a quote from us today.