What do the terms convoluted, rolling lobe, and tapered sleeve mean?
Convoluted refers to an air spring constructed with one, two, or more convolutions, which are defined by the end plates and equally-spaced dividing rings which have a lesser diameter than the rubber membrane. This construction forms a bellows, or “donut” shape. Rolling lobe and tapered sleeve air springs are cylindrical in construction. Typically sleeves have a lower rate curve than bellows, which provides a more comfortable ride when carrying for lighter loads.
