Spring Characteristics and Force Tolerances of Gas Springs1112228

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As opposed to most other types of springs, strut bracket possess a built-in pretension force and a flat spring characteristic. This means that there is just a small improvement in force between full extension and full compression.

As the piston and piston rod are pressed into the cylinder, volume reduces and pressure increases. This causes pushing force to boost. In conventional gas-type springs, this increase is normally around 30% at full compression.


The pushing spring movement is slow and controlled. It is dependent on the gas flow between your piston sides being able to go through channels within the piston throughout the stroke. Conventional gas springs use 'hydraulic damping', that involves a small amount of oil slowing down the speed with the stroke immediately prior to the spring reaches full extension. Thus giving the movement a braking character by the end position provided that the piston rod is within the downward direction.


Force tolerances when charging with gas along with other factors signify there might be variations in the force exerted by gas springs with the exact same nominal value.

The nominal values apply at 20° C, which is temperature where gas charging is completed. Note that if the ambient temperature rises or falls, the force of the spring rises or falls according to pressure modifications in the cylinder. As a rule of thumb, gas spring force increases by approximately 3.5% per 10° C temperature increase and reduces accordingly once the temperature falls.