... type trailer mechanical suspension: 1, there are with 2 or 3 and 4 axles. 2,Leaf spring 12 PCS and 14 PCS trailer ... 6 spoke bogie,Germany suspension system,bogie suspension axles. Germany type trailer mechanical suspension:1, there are with 2 ... ,Leaf spring 12 PCS and 14 PCS 1. HJ bogie&trailer axle beam, which has the advantages of small, high intensity ...