Simplify Your Compression Spring Calculations with Spring Creator 5.0

ENTER YOUR DIMENSIONS

Select Your Spring Type

compression

COMPRESSION

extension

EXTENSION

torsion

TORSION

Select Your Unit of Measurement

Attention:

Input results shown will be +/- 10% from middle value.
Hint: The closer your min and max inputs are, the more accurate your results will be!

Wire Diameter

Wire Diameter

Design type  
Min Max - IN

Outer Diameter

Outer Diameter

Inner Diameter

Design type  
Min Max - IN
Free Length

Free Length

Design type  
Min Max - IN
Total Coils

Total Coils

Design type  
Min Max -  
Material Type

Material Type

spring-wire-diameter

End Types

Wind Direction

Wind Direction

Wire Diameter

Wire Diameter

Design type  
Min Max - IN
Outer Diameter

Outer Diameter

Design type  
Min Max - IN
Length Inside Hooks

Length Inside
Hooks

Design type  
Min Max - IN
Material Type

Material Type

Hook Types

Hook Types

Wire Diameter

Wire Diameter

Design type  
Min Max - IN

Outer Diameter

Outer Diameter

Inner Diameter

Design type  
Min Max - IN
Leg Length 1

Leg Length 1

IN
Leg Length 2

Leg Length 2

IN
Free Position

Free Position or Leg Position in degrees

Design type  
Min Max -  
Total Coils

Total Coils

Design type  
Min Max -  
Material Type

Material Type

Wind Direction

Wind Direction

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Warning Messages

Table of Content:

 

Introduction

In today's era of Industry 4.0, where technology and innovation reign supreme, product designers and engineers are constantly seeking ways to work more efficiently. A vital aspect of their work involves ensuring that the spring components in their designs not only fit seamlessly but also perform optimally. This is where Spring Creator 5.0 comes into play. What is Compression Spring Calculation? Compression spring calculation is the process of determining crucial spring properties, including shear modulus and Young's modulus of the spring wire, Poisson's ratio for the spring wire, spring wire diameter, outer diameter, and the number of active coils. These values are essential for designing and manufacturing compression springs that meet specific performance requirements. Simplify Your Spring Calculations with Spring Creator 5.0 Say goodbye to the complex, time-consuming calculations of compression springs. Spring Creator 5.0 is your free online spring calculator that simplifies the process and provides you with a comprehensive 3D spring analysis. By entering a few key spring dimensions, you can obtain all the information in real time visual 3D so you can ensure your spring functions flawlessly in your application.

Basic Compression Spring Calculation Formulas:

In some cases, you might only have partial information about your compression spring's dimensions. To calculate vital parameters such as spring rate and spring maximum travel, you need to know additional details. Let's explore some fundamental compression spring calculation formulas:

To Calculate Wire Diameter:

If you have the Outer Diameter (OD) and Inner Diameter (ID) and need to find the Wire Diameter (WD), follow this straightforward formula:

a coil with lines and arrows signaling where the wire diameter is

 

 

Wire Diameter (WD) = (Outer Diameter - Inner Diameter) ÷ 2
WD = (OD - ID) ÷ 2


To Calculate Outer Diameter from Inner Diameter:

To derive the Outer Diameter (OD) when you know the Wire Diameter (WD) and Inner Diameter (ID), use this formula:

Compression Spring Outer Diameter

 

 

Outer Diameter = 2 * Wire Diameter + Inner Diameter
OD = 2WD + ID


To Calculate Inner Diameter from Outer Diameter:

If you have the Outer Diameter (OD) and Wire Diameter (WD) and need to find the Inner Diameter (ID), apply this formula:

a coil with lines and arrows signaling where the inner diameter is

Inner Diameter = Outer Diameter - 2 * Wire Diameter
ID = OD - 2WD


To Calculate Mean Diameter:

The Mean Diameter (MD) is essential for spring design and can be calculated by subtracting one wire diameter from the Outer Diameter (OD) or adding one wire diameter to the Inner Diameter (ID) as follows:

Mean Diameter

Mean DiameterOuter Diameter - Wire Diameter
MD = OD - WD


To Calculate Your Spring's Index:

The spring index (I) is a critical parameter to ensure manufacturability. To find it, divide the Mean Diameter (MD) by the Wire Diameter (WD) using this formula:

Spring Index

 

Index = Mean Diameter ÷ Wire DIameter
I = MD ÷ WD


Advanced Compression Spring Calculations

The next step in designing your compression spring involves determining the spring rate, which dictates how your spring will react to applied loads and its potential travel. These advanced compression spring calculations are essential:

To Calculate Compression Spring Constant K / Rate:

Calculating your compression spring's rate (k) is a multi-step process that considers material properties, wire diameter, outer diameter, and the number of active coils. Here's the formula:

k = G*(d^4) / [8*D^3 * n_a]

Where:

k = Spring Constant (Rate)
G = Shear modulus of material
d = Spring Wire Diameter
D = Outer diameter of spring
n_a = Number of Active Coils


How to Calculate Your Compression Spring's Load:

Your compression spring's load (L) is determined by multiplying the spring's rate (R) by the distance you expect the spring to travel (DT):

Load = Rate * Distance Traveled
L = R * DT


How to Calculate Your Compression Spring's Distance Traveled:

To find the distance your compression spring will travel (DT), divide the load (L) by the spring's rate (R):

Distance Traveled = Load ÷ Rate
DT = L ÷ R


How to Calculate Your Compressions Spring's Rate From Load and Travel:

If you know the load you'll apply and the distance your spring should travel but can't calculate the rate directly, use this formula:

Load ÷ Distance Traveled = Rate
L ÷ DT = R

Conclusion:

Spring Creator 5.0 is a powerful spring design tool designed to simplify the complex process of compression spring calculations. Whether you're a spring engineer, designer, or anyone working with compression springs, this free online spring calculator empowers you to make informed decisions quickly and efficiently. Say hello to precision and goodbye to manual calculations.

 

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

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