search
Loading...
Compression Springs Compression Springs

Enter your Outside Diameter and Free Length
Hint: For larger search results, enter a bigger range of Min and Max Inputs

Outside Diameter
to
Inside Diameter
to
Free Length
to
Wire Diameter
to
Total Coils
to
Rate
to
Material Type
Max. Load
to
Max. Deflection
to
Solid Height
to
*Required Field
Extension Springs Extension Springs

Enter your Outside Diameter and Length Inside Hook
Hint: For larger search results, enter a bigger range of Min and Max Inputs

Outside Diameter
to
Length Inside Hook
to
Wire Diameter
to
Max. Load
to
Max. Deflection
to
Initial Tension
to
Rate
to
Material Type
*Required Field
Torsion Springs Torsion Springs

Enter your Outside Diameter and Total Coils
Hint: For larger search results, enter a bigger range of Min and Max Inputs

Outside Diameter
to
Inside Diameter
to
Total Coils
to
Free Position
to
Wire Diameter
to
Body Length
to
Max. Torque
to
Max. Deflection
to
Rate
to
Leg Length
to
Material Type
*Required Field
Conical Springs Conical Springs

Enter you Small Outside Diameter, Large Outside Diameter and Free Length
Hint: For larger search results, enter a bigger range of Min and Max Inputs

Small Outside Diameter
to
Large Outside Diameter
to
Free Length
to
Rate
to
Total Coils
to
Solid Height
to
Wire Diameter
to
Material Type
*Required Field

Fatigue Life of a Compression Spring

Definition: The life cycle (fatigue life) of a spring is its life expectancy before taking a set or breaking during deflection.

When a spring breaks or takes a permanent set, it is because it is under a lot of stress. Our spring calculator can help solve that problem. It does so using your spring’s physical dimensions to provide accurate specifications and valuable information regarding the limits and safe use of your specific spring.

The proportion of the spring's dimensions are what can cause it to be stressed. The spring index is the first indicator of this. If you have a tight index, your spring will be stressed and have a low elastic limit. This happens when your wire diameter is very large in proportion to your outer diameter. The same happens with the free length and total coils. The more pitch you have in between your spring’s coils, the more stress your spring will have. This means you have too little coils in proportion with the free length.

Having a stressed spring is fine when you don’t need a lot of travel or your spring is initially used to absorb shock. If you want your spring to travel a considerate amount compared to its free length, you will need to keep a balance between force and elasticity. You do this by avoiding a tight spring index and having a good amount of coils; not too many, but just enough.

Compression Spring long life CycleCompression Spring long life Cycle
Compression Spring Short life CycleCompression Spring Short life Cycle

Our spring calculator, Spring Creator, will calculate your spring’s elastic limit. To find it, go to the “Answers” section after calculating a design. You will see the Maximum Travel Considering Solid Height as well as the Maximum Load Considering Solid Height. These values will tell you if your spring is relieved enough to travel as much as you need or be able to undergo the required load. If the Potential Travel is higher than the Max Travel Considering Solid Height, you can increase the Free Length a little to be able to get more force out of your spring through more travel. The only way this value might be higher is if you have a relieved spring.

To relieve your spring from stress and increase its fatigue life, you can make the following adjustments:

  • Increase the Outer Diameter
  • Decrease the Wire Diameter
  • Increase the Active Coils
Spring Force ChartSpring Force Chart

Feel free to contact our engineers to learn more about the subject or get spring design help. We have over 30 years of experience in the industry and have come across some very intricate designs so regardless of how complicated your spring can make it happen or be very honest with you as to whether it is doable or not.

Invest in precision and quality

Spring Creator 5.0 offers you the possibility to design springs that perfectly fit your needs. Our platform not only allows you to design various types of springs but also provides advanced tools like the Online Spring Force Tester to simulate and evaluate spring performance. Visualize your design in 3D, download detailed blueprints, and get instant quotes. Try it for free and discover why we are the preferred choice of engineers and makers!

Invest in precision and quality

Spring Creator 5.0 offers you the possibility to design springs that perfectly fit your needs. Our platform not only allows you to design various types of springs but also provides advanced tools like the Online Spring Force Tester to simulate and evaluate spring performance. Visualize your design in 3D, download detailed blueprints, and get instant quotes. Try it for free and discover why we are the preferred choice of engineers and makers!

Spring Creator tool - Try it now

Created by Alfonso Jaramillo Jr

President Acxess Spring

Over 40 Years of Experience in Spring Engineering and Manufacturing