... caliper disc brake, drum brake&handbake Widely used in loaders,cranes, aerial platform,fire tr Cylinders: 4 & ... device and brake cylinder. The drum brake is used for automobile crane QY12T, QY16T, QY20T, QY25T, ... CNC lathe and special purpose machine tool is used to process the brake shoe and brake ... bracket. The traditional riveting technology is used to process the friction plate and brake ...