OLEO-PNEUMATIC SPRINGS

Oleo-pneumatic springs for a wide range of forces, up to 2,000 kg, by varying the gas pressure of the accumulator.

Suitable for vehicles with a fully loaded/empty ratio equal or higher than 2.5.

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springs-1Apart from their general standard application in vehicles, oleo-pneumatic springs can also be used in more specific applications, like the one in the photograph, giving suspension to a tractor front ballast holder.

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ADVANTAGES OF HIDRACAR OLEO-PNEUMATIC SPRINGS:

Compared to conventional coil springs:

  • They require less space to be installed.
  • No need for a spring-compressing device to provide the initial force.
  • If you don’t know initially the exact force that must be applied, it is not necessary to change the spring for a stronger one later on; you just increase the gas pre-charge of the accumulator.

Compared to springs that operate only with gas:

  • Shorter and heavier-duty.
  • There is no way the gas can leak through the rod seals, as those are always lubricated in HIDRACAR oleo-pneumatic springs and the gas is contained inside the bladder of the accumulator.
  • No rebound effect is produced, unlike with gas-only cylinders and coil springs.

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COMPARATIVE GRAPHIC BETWEEN A HIDRACAR OLEO-PNEUMATIC SPRING AND TWO DIFFERENT COIL SPRINGS

Comparative graphic between a HIDRACAR oleo-pneumatic spring and two different coil springs

Explanation of the graphic:
The red line (1) corresponds to a coil spring that applies an initial force of 500 kg and a final force of 800 kg with a 100 mm stroke.
The blue line (2) corresponds to another coil spring applying an initial force of 1,000 kg and a final force of 1,600 kg with a 100 mm stroke.
Curves (1.C) and (2.C) are the equivalent for a HIDRACAR CS.SE.D40x110 + U003 oleo-pneumatic spring with the same stroke and forces applied. Only the gas pressure of the accumulator has been modified.
The other curves (3) and (4) are the corresponding to the same oleo-pneumatic spring, but with different gas pre-charges.

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PRODUCT SHEETS:

Oleo-pneumatic springs (pdf file).