What this calculator does
A wave spring replaces a coil spring with a wave-shaped ring, saving height in axial space. Stiffness depends on the number of waves, wave height, wire section and number of turns. The calculator reports load at a given deflection and checks that the spring can be compressed to solid height without exceeding the allowable stress.
Inputs and outputs
Inputs
- Outside and inside diameter
- Wire diameter or strip thickness and width
- Number of waves
- Wave height
- Number of turns
- Working deflection
Results
- Load at the working deflection
- Stiffness curve
- Stress
- Solid height
- Required spring cavity
Typical applications
- Bearing preload
- Clutches
- Seals
- Connectors
- Downhole tools and compact actuators
Design notes
Wave springs are sensitive to the parallelism of the mating surfaces. Specify flat, parallel faces and avoid bearing the spring directly against a rough cast surface, which will flatten the waves unevenly.
The interactive calculator interface is currently in Chinese. Enter your values there, or send us the load, travel and space constraints and our engineers will return a checked calculation sheet in English.
Frequently asked questions
What is the advantage of a wave spring?
It produces the same force as a coil spring in a much shorter axial length, which makes it useful where the housing height is fixed.
Round wire or flat strip?
Flat strip gives a higher load in the same radial space but is stiffer and less tolerant of misalignment. Round wire is more forgiving and easier to source in small quantities.
How many waves should I use?
More waves reduce the stiffness and increase the number of contact points. The calculator lets you compare wave counts against the required load and cavity height.
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Need this spring manufactured?
Send a drawing, a sample or the parameters from this calculator. We will review manufacturability and reply with a quote and a sample lead time.