Spring measurements and spring specifications for
compression, extension and torsion springs are below.
Follow the guidelines below for the type of spring you
have to determine your springs measurements and spring specifications.
How to measure Compression Springs, Coil Springs and
Helical Springs (These spring types are all the same)
To Measure your coil springs correctly
See diagram to the right for explanation. ------------------------------->
You will need to know the four (4) spring specifications below:
1. Wire diameter
2. Outer diameter
3. Free Length (length of spring)
4. Number of total coils
Also please choose the Spring End Type you desire:
Closed and Squared Ends
The last coil is closed touching the previous coil
closed and squared ends is the most economical of
all end types and works well for standing up normal size
springs. Closed and squared ends do NOT work well if
you have a spring with a small outer diameter you should
choose closed and ground ends so it will stand up vertically
Closed and Ground Ends
The last coil is closed and ground flat touching with the
previous coil. Closed and ground ends help the spring stand
up vertically straight. This type of end lets your spring stand
up straight and gives an even surface of contact to the spring
base. A good choice for precision springs though a bit more
costly than closed and squared ends because additional labor
needs to be performed to grind the ends of the spring flat.
Double Closed Ends
The last two coils on each end are closed to help stabilize
the top and bottom of the spring. Double closed ends aids
your springs footing especially when you have a large outer
diameter coupled with a fine or smaller diameter wire when
compressing or traveling to stacked height where all the
coils are touching. Double closed ends help your spring ends
from sliding over or slipping under the previous coil, it
keeps the coils stacked up on top of each other correctly.
This is an great economical choice to prevent buckling
and stabilizes your spring .
The ends of the spring are open and have space or pitch
in-between them. This is a good option if you need more force
out of your spring but don't have the room for it. An
open ended spring makes all of your coils active thus getting
the all the force out it. This kind of spring end requires that
you place it in hole or on a shaft to make it work. Their is
usually no extra cost for this type of end thus making it
an economical choice.
To measure your Helical Springs Rate or Spring Constant use our Spring Calculator here.