Spring Characteristics and Force Tolerances of Gas Springs965807
As opposed to most other types of springs, strut bracket possess a built in pretension force along with a flat spring characteristic. Which means that there's 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 will cause pushing force to increase. In conventional gas-type springs, this increase is normally around 30% at full compression.
The pushing spring movement is slow and controlled. It really is reliant on the gas flow between your piston sides being permitted to go through channels in the piston through the stroke. Conventional gas springs use 'hydraulic damping', involving a modest amount of oil slowing down the speed from the stroke immediately prior to the spring reaches full extension. This gives the movement a braking character at the end position so long as the piston rod is within the downward direction.
Force tolerances when charging with gas and other factors mean that there could be variations in the force exerted by gas springs with similar nominal value.
The nominal values apply at 20° C, which is the temperature where gas charging is completed. Note that if the ambient temperature rises or falls, the force with the spring rises or falls based on pressure alterations in the cylinder. Usually of thumb, gas spring force increases by approximately 3.5% per 10° C temperature increase and reduces accordingly once the temperature falls.