Flexible convoluted sections in bellows assemblies that provide axial, lateral, and angular movement compensation in industrial systems.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Leak Rate | <10^-9 mbar·l/s | |
| Spring Rate | 10-500 N/mm | |
| Fatigue Life | 10^5 to 10^7 cycles | |
| Stroke Length | 5-100 mm | |
| Pressure Rating | Vacuum to 100 bar | |
| Convolution Count | 3-20 folds | |
| Temperature Range | -200°C to +800°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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Manufacturer profiles associated with Bellows convolutions.
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Bellows convolutions refer specifically to the folded sections of a bellows assembly, while expansion joints are complete assemblies that include bellows, end fittings, and sometimes internal liners or external covers for piping system compensation.
The precision of convolution formation directly impacts hysteresis and repeatability. Well-designed convolutions provide linear displacement-to-pressure relationships with minimal hysteresis, ensuring accurate feedback signals in control systems.
Fatigue life depends on material properties, convolution geometry (radius, pitch, wall thickness), operating pressure/temperature ranges, cycle frequency, and installation alignment. Proper design can achieve 10^6+ cycles.
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