Disc Springs – FAQs
What is a disc spring?
A disc spring is a precision conical spring element designed to produce a defined spring force when compressed axially. Disc springs are manufactured to DIN 2093, which specifies dimensions, tolerances, material requirements, and load–deflection characteristics.
Disc springs are engineered spring components, not general washers.
What are disc springs used for?
Disc springs are commonly used:
- To maintain controlled preload in bolted and mechanical assemblies
- To compensate for thermal expansion, settlement, or wear
- To absorb shock or dynamic loading
- Where high spring force is required in a compact space
They are widely used in machinery, tooling, power transmission, and precision engineering.
How do disc springs work?
When axial force is applied, the conical disc elastically deflects and generates a predictable spring load.
Because their performance is defined by standardised geometry, disc springs can be engineered precisely for load, deflection, and fatigue life.
Can disc springs be stacked?
Yes. Disc springs may be stacked:
- In series to increase deflection
- In parallel to increase spring load
This allows fine control over the spring characteristics of an assembly.
Are disc springs the same as conical spring washers?
No.
Disc springs (DIN 2093) are true spring elements and should not be confused with conical spring washers manufactured to DIN 6796, which are intended specifically for bolted joints and have far more limited spring characteristics.
Are disc springs reusable?
Yes, provided they are operated within their specified elastic limits. Disc springs that have been flattened beyond their elastic range should be replaced.
What materials are available?
Disc springs are commonly supplied in:
- Stainless steel, depending on application and environmental requirements
How do I choose the correct disc spring?
Selection is based on:
- Required spring load and deflection
- Available installation space
- Static vs dynamic loading
- Environmental conditions