TFC Ltd

All Springs Are Not Equal
Wave Springs offer the unique advantage of space savings when used to replace coil springs. With their smooth, circular coiled sinusoidal wave form, and rolled round edges of pre-tempered wire, Smalley’s edgewound Wave Springs offer many advantages:

  • Reduced spring height by 50%
  • Same force and deflection as coil springs
  • Fit tight radial and axial spaces
  • Over 4,000 standard sizes in carbon and stainless steel.
  • No Tooling Charges for special designs
  • Exotic alloys for all environments 
Have you got the right spring for your application?

Have you got the right spring for your application?

TFC’s engineers answer commonly asked Retaining Ring and Wave Spring questions.  Our Product Manager, Simon Ward, describes how to properly measure your Wave Springs to ensure that you have the right part for your application.

What is the free height?

It is sometimes important to know how to properly measure the free height of our Crest-to-Crest® wave springs in order to verify the correct part is being used for the application. However it is essential to understand what is meant by the term 'free height' and this is defined as the height at which a wave spring is measured in its free state.

Insert free height image.

 

How should you measure the free height of your Smalley Wave Springs?

When done correctly, it can save valuable inspection time but, because of the finished form of our multi-turn Smalley springs, this is not always easily achieved. The following guidelines should help to correctly assess the free height of our springs:

1) Ensure the spring is sitting on a flat surface between two parallel plates.

2) Lower the top measuring surface until it touches the spring.

3) Apply a slight force to deflect the spring until the crests of all waves come in contact with the loading surfaces (top & bottom).

4) The distance between the two parallel plates is the free height.

 

That’s all for now, check back next time when the team will answer more Smalley product related questions. You can see more blog entries and other application examples on our technical articles page

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