It is called crawler type machine because it has a moving track system that moves along the workpiece to ensure complete coverage. The machine consists of a blasting wheel responsible for propelling the abrasive media at high speed, a bucket elevator system for continuous circulation of the abrasive media, a separator for removing impurities from the abrasive media, and a dust collector for capturing and collecting the generated abrasive. . . Dust and debris. Tumble belt shot blasting machines are designed for heavy-duty applications and are commonly used in industries such as automotive, foundry, construction and shipbuilding. It is particularly effective at removing scale, rust, paint and other surface contaminants from small and irregularly shaped parts.