Air Springs Twicepower Technology Convoluted Air Spring 2B 200-19 air ballons

OEM NUMBER

DESCRIPTION

The two major types of air spring are the rolling lobe (sometimes called reversible sleeve) and the convoluted bellow. The rolling lobe air spring uses a single rubber bladder, which folds inward and rolls outward, depending on how far and in which direction it is moved. The rolling lobe air spring is available with very high usable stroke length—but it is limited in strength because of its tendency to bulge, and therefore, has limited force capacity. The convoluted bellow type air spring uses one to three shorter bellows, with the multiple units being reinforced by a girdle hoop. Convoluted air springs are capable of ten times the force of a rolling lobe version and twice the life cycle rating, but have less usable stroke to work with.

What's the Purpose of an Air Bag Suspension System?

Air bag suspensions are used to achieve smooth ride quality by replacing the conventional steel-spring suspension in heavier vehicle applications like trucks, tractor-trailers, passenger buses, and even passenger trains.

The ECAS (Electronically Controlled Air Suspension) includes several features such as:

• Vulcanized, heavy-duty rubber air springs at each of the vehicle's wheels
• A storage tank for compressed air which stores air at an average of 150 psi
• Valve blocks that direct air to the four springs from the storage reservoir
• Air pipes connecting the storage tank to the air bags
• ECAS* computer that communicates where to direct more or less air pressure.

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