This unit features cushioned forward and reverse strokes, which together with the muffled exhaust ports make it barely audible within its frequency range of 38 to 45 cps. When air pressure from 0.35kg/cm² (5psi) is suddenly applied, it generates auto-start. However, when air pressure is applied gradually, a mechanical shock is required to start.
These vibrators are offered by Eriez-Europe.