... compensation device and brake cylinder. The drum brake is used for automobile crane QY12T, QY16T, QY20T, QY25T, QY30T, QY50T and QY75T ... , etc., big tonnage cargo truck, pavers, graders, road rollers and excavators and so on. Both ... . There are more than 20 kinds of products for you to choose. Disc Brake SOMA Diameter 75x 4 for cranes, dump truck and compactors