Assortment of Bellows

Bellows Cross Section

Hydrodyne designs and manufactures bellows for many special applications.  They have many unique characteristics.

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 Design Freedom

Material choice not limited by forming or welding parameters.

Wide range of configurations

Optimize material thickness based on stresses in convolution.  Bellow cross-section can be of variable thickness to account for stress distribution

Bellows can be machined with thicker walls that can be formed or welded

Flanges or other end fittings can be integral with the bellows

Linear spring rate

Custom designed

 Maximum Reliability

Elimination of weld in critical areas – No distortion or concerns about metallurgical and other defects related to weld areas.

Machined from solid stock

Optimized design for fatigue resistance and endurance

Dimensional control and precision machining provide perfect concentricity

o        No thinning of the convolutions or loss of ductility in high stress areas

o        No asymmetry

One ply – No fretting

Inspected with special gauging equipment to insure conformity with customer requirements

Hard vacuum to 10,000 psi

Liquid hydrogen temperatures to 1800°F

High spring rate in a small package

Wide choice of materials

1/8” to 58” diameter

Bellows Engineering Data Sheet