Walther Trowal offers a line of CB circular vibrators designed to enhance surface finish and productivity. They each feature a slightly inclined, spiral-bottom process channel of more than 180 degrees that enables gentle processing combined with a high metal removal rate. A gate-clearing feature that runs prior to the screening cycle ensures that workpieces and media cannot be caught between the separation flap and the bottom of the process channel. The flap is only lowered when the gate area is completely free of components and media, helping to prevent damage to workpieces during the separation process. Separation can be done manually or automatically via a separate timer. Seven models are available, with useable volume ranging from 4.4 to 42.4 ft.3.