For trailer
Air springs of a suspender of trailers of trucks are used for increase in loading capacity of the trailer and reduction of its wagging, thereby facilitating trailing of such trailer.
For a suspender of trailers of auto trucks the Aignerr company provided kosntruktion of springs from vulcanized by the top plate which forms strong joint of rubber with metal.
Now the range of the Aignerr company contains a number of products which are offered as in collecting (with the established lower base) and without the base.