Schnorr Disc Springs
Features and Benefits of a Disc Spring Stack
Disc Spring Engineering
Maximum load - minimum space - maximum flexibility
Understanding the Advantages of Disc Spring Stacks
The best spring arrangement is the one which uses the least number of individual disc springs. In order to achieve this goal, the outside diameter should always be as large as possible. This automatically keeps the disc spring stack length short.
With an increasing number of disc springs, the friction and the uneven deflection of individual discs within the stack increases. We recommend Lo<3.De as the approximate spring stack length.
If it is not possible to avoid a longer stack, then it should be divided into 2 or possibly 3 partial disc spring stacks with suitable washers. These washers should be guided as exactly as possible.
In order to keep the friction within reasonable limits, no more than 2 or 3 springs should be stacked in parallel unless a large friction loss is expressly desired. Particularly in the case of dynamic loading, considerable warming must be expected with 2 or more springs in parallel. Whenever possible, the abutments of a disc spring stack should contact the outside diameter, however, this is only possible at both abutments with an even number of individual disc springs or spring sets.
Advantages of Disc Spring Stacks
- Efficient Load Distribution: Disc spring stacks provide uniform load distribution, minimising the risk of uneven deflection.
- Space Efficiency: Using larger outside diameters in disc spring stacks helps in keeping the stack length short, saving valuable space in assemblies.
- Enhanced Performance: Properly guided washers within disc spring stacks reduce friction and increase the overall efficiency of the system.
Dynamic Load - Management: Disc spring stacks are effective in managing dynamic loads, although it’s important to monitor potential warming when using multiple springs in parallel.
Best Practices for Using Disc Spring Stacks
- Optimal Stack Length: Aim for an approximate stack length of Lo<3.De to minimise friction and uneven deflection.
- Divide Long Stacks: If a longer disc spring stack is unavoidable, divide it into 2 or 3 partial stacks with guided washers for better performance.
- Friction Management: Limit the number of parallel springs to 2 or 3 to keep friction within reasonable limits unless higher friction is desired.
- Abutment Contact: Ensure that the abutments of the disc spring stack contact the outside diameter, which is achievable with an even number of springs or spring sets.
By following these guidelines, you can optimise the performance and longevity of your disc spring stacks. Whether used in static or dynamic applications, disc spring stacks are an excellent solution for efficient load management and space-saving in mechanical assemblies.
