Coil Compression Spring Search Finder Locator
Definition: Coil compression spring finder search engine used to locate a specific coil compression spring which meets the dimensional ranges specified by the user to accomplish their needs.
Search for your springs and locate them FAST using The Spring Store’s Spring Finder. Spring finder allows you to find the ideal stock spring for your mechanism, device, invention, etc amongst over 17,000 stock compression springs in our coil compression spring catalogue store. You only have to input one dimension and enter the ranges in which the dimension will be searched by. The options for a quick, basic search are outer diameter, free length and rate. There is more, though. You are able to click on the option “Search More Fields” at the bottom of the Finder. These spring specifications include load, deflection (travel), total coils, solid height, inner diameter, wire diameter, or material type. You may input all of these dimensions in either the english or metric units of measurement. The following diagrams and examples will show you the step by step process of finding your spring.
With Spring Finder, you are able to search for your standard compression springs in whichever unit of measurement you find best. Whether it is in english (inches and pounds) or metric (millimeters and newtons) units.
Spring Finder is a fast and easy to use search engine. It is user friendly and provides you with a how-to-measure diagram as well as icons for each respective compression spring dimension. The following are the spring dimensions Spring Finder allows you to use when locating your stock compression springs.
Outer Diameter - Is your coil spring being placed in a hole? Make Sure that the width (outer diameter) of your spring’s coils aren’t either too tight or too loose inside the hole.
Free Length - The length of your compression spring’s body in its free state.
Spring Rate - The constant amount of force it takes for your coil spring to travel one unit of measurement (lbf/in or N/mm)
Load - The amount of load your compression spring will be required to resist.
Deflection (Distance Traveled) - The traveled distance between your coil spring’s free length and loaded height.
Total Coils: The total amount of coils that make up your compression spring’s body.
Solid Height: Also known as “coil bind height”. The maximum solid height your coil spring should achieve. It must be less than your desired loaded height.
Inner Diameter: Is your spring going over a shaft? Make sure your inner diameter won’t be either too tight or too loose around it.
Wire Diameter: Affects spring force and determines an approximate range of your coil spring’s size.
Material Type - The type of wire used to manufacture the spring. You may choose from music wire (MW), stainless steel 302 (SST), stainless steel 17-7 (17-7), beryllium copper (BC), hard drawn (HD), chrome silicon (CS), oil tempered (OT), and phosphor bronze (PB).
Step 3.) Search, Find, and Locate Your Coil Spring
This is where you click on the “Search” button and get all the stock compression spring results that Spring Finder was able to locate in our compression spring catalogue. Locate the compression springs which might work best and find the ideal coil spring for your mechanism.
Select the springs which you find the closest to your design. Then you may compare the dimensions and specifications like rate, maximum deflection (travel), and maximum load. If the free length varies, you might want to calculate the working loads to make sure you will be able to meet your loaded height under the load you will be applying. This formula may be broken into three separate formulas depending on what it is you want to calculate; rate, load, or travel. In this case, you are already provided with the spring rate so you will be wanting to calculate either load or travel. Below are these formulas.
Maximum deflection is the maximum amount of travel you can achieve under the maximum load possible based on your compression spring rate.
To calculate a working load you must multiply the coil spring rate by the distance traveled. To calculate distance traveled you must subtract your desired loaded height from the free length. Please note that you must stay within the suggested max load because that is the elastic limit of the spring. Going further than the suggested max load, can cause your spring to take a permanent set thus losing load, travel, and shorten its free length.
F = kx
F = Load
k = Rate
x = Travel
To calculate the amount of travel your spring can achieve under a certain load, divide the required load by the spring rate. Please note that you must stay within the suggested max deflection because that is the elastic limit of the spring. Going further than the suggested max deflection, can cause your spring to take a permanent set thus losing load, travel, and shorten its free length.
x = L÷k
F = Load
k = Rate
x = Travel
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