Quick answer
DIN 2093 is a useful starting point for standard disc springs, but A, B and C series should not be read as simple size groups. They also point to different proportions and load behavior.
In a simplified view, A series springs are generally thinner with more relative travel, C series springs are generally thicker with higher load capacity, and B series sits between them. The actual choice still depends on the specific size and working point.
Why similar dimensions can behave differently
OD, ID and thickness are necessary starting points, but they do not tell the full selection story. Two disc springs with similar OD and ID may still have different free height, cone height and load curve.
Replacing by size alone can lead to a part that fits but does not produce the correct load or fatigue margin.
A practical selection flow
Start by checking whether the part fits the available space. Then confirm working height, read the load at the working point, and review material and application conditions.
Valve, flange, high-temperature, corrosive or cyclic applications need closer review because a standard group does not automatically solve the service risk.
Frequently Asked Questions
What is the difference between DIN 2093 A, B and C series?
They differ in geometry, thickness, cone height, load and deflection characteristics, not only in OD and ID.
Can DIN 2093 disc springs be replaced by dimensions only?
No. Working height, load, material, temperature, stack method and guidance should also be checked.
How do you choose A, B or C series?
Start with space and target load, then check the working point and operating conditions.
Need FeTech to review your disc spring application?
Send the drawing, stack envelope, load target, temperature, media and quantity. Our team can check material direction, stack logic and quotation readiness.
- DIN 2093 replacement or custom geometry
- Valve, flange, actuator and severe-service stacks
- Material review for stainless, Inconel, Hastelloy, titanium or heat-resistant steel
Final geometry, fatigue life, K4 source, friction and support-face conditions still require engineering confirmation.