Main specifications
Material
Polyurethane.
Standard executions
Pass-through hole.
- PES-80: hardness 80 Shore A, blue colour.
- PES-90: hardness 90 Shore A, orange colour.
- PES-92: hardness 92 Shore A, red colour.
Working temperature
- Maximum continuous working temperature: 60°C.
- Minimum continuous operating temperature: PES-80 and PES-90: -20°C, PES-92: +15°C.
Use at temperatures between 60 and 100°C is tolerated but involves a significant reduction in the features.
Prolonged exposure to the maximum operating temperature may also lead to a significant deterioration in the mechanical characteristics compared to the nominal values indicated in the technical data (see technical data).
General information
Features and applications
Perforated springs are an excellent alternative to traditional metal springs. They guarantee high resistance to axial load, avoiding sudden breakage in the event of overload.
They can be used as load dampers or as forming elements, in particular they are widely used in processes such as deep drawing (fig.1), sheet metal deformation, and ejectors.
They are also resistant to chemicals such as acids, greases, and oils (for details on chemical compatibility, please refer to the table Resistance to chemical agents).
During the application of the load (F1) the spring has a non-deformation zone (h1) and a maximum deformation (d3) proportional to the applied force F1.
Specific load curve for each diameter.
