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Compression Springs Compression Springs

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

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

Enter your Outside Diameter and Total Coils
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Outside Diameter
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Inside Diameter
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Total Coils
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Free Position
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Wire Diameter
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Body Length
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Max. Torque
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Max. Deflection
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Rate
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Leg Length
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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
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Large Outside Diameter
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Free Length
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Rate
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Total Coils
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Solid Height
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Wire Diameter
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Material Type
*Required Field

Compression Spring Deflection Calculation

Definition: The calculation of the spring travel, also known as spring deflection, using spring rate and a required load.

 

 

 

Example 1.)

 

A spring will deflect under any kind of load even if it is only by a few thousandths of an inch. If you require the spring to remain stationary and not travel un a certain initial load, you might want to consider making the free length a bit longer to pre-load it at the height you need it to be. To calculate the amount of deflection your spring will travel under this initial load you must divide the load by the compression spring’s rate as shown in Example 1. The result will be the amount of deflection your spring will compress under that load. Our compression spring calculator gives you two values in regards to safe deflection.

Compression Spring Deflection Calculation Example 1Compression Spring Deflection Calculation Example 1

 

Example 2.)

 

These values you are provided with are True Maximum Travel and Maximum Travel Considering Solid Height. Maximum Travel Considering Solid Height is the actual amount of safe travel you can achieve out of your latest design. True Maximum Travel, on the other hand, is the travel you will be able to achieve if the spring’s free length were longer. If these two values are different from each other, the True Maximum Travel will be a higher number. If you subtract the Maximum Travel Considering Solid Height from the True Maximum Travel, the result will be the amount of length you are still able to add to your spring to produce more travel.

 

Compression Spring Deflection Calculation Example 2Compression Spring Deflection Calculation Example 2

 

Example 3.)

 

Example 2 in the images to the right, shows a spring with a True Max Travel of 1” and a Maximum Travel Considering Solid Height of 0.5”. The Maximum Travel Considering Solid Height of 0.5” is then subtracted from the True Maximum Travel of 1” and gives you a result of 0.5” which you are able to add to the compression spring’s free length. Once you’ve added the additional length, you’ll be able to travel 1” safely all the way down to solid height. If you add more length to the spring than the 0.5”, you might still be able to travel the 1” but the compression spring will not deflect down to solid height without causing a permanent set.

 

Another value shown in the “Safe Travel” section is minimum loaded height. This is the loaded height your spring will deflect to once it travels the maximum travel considering solid height. You may calculate this value by subtracting the maximum travel considering solid height from the spring’s free length as shown in  Example 3.

 

Compression Spring Deflection Calculation Example 3Compression Spring Deflection Calculation Example 3

 

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!

 

Try Now Spring CreatorTry Now Spring Creator

 

Created by Alfonso Jaramillo Jr
President Acxess Spring
Over 40 Years of Experience in Spring Engineering and Manufacturing