A vibro sifter machine is a type of industrial equipment used for separating or grading powders, granules, or liquids based on their particle size. It is commonly used in the pharmaceutical, food, chemical, and cosmetic industries.

The machine consists of a vibratory motor that generates vibrations and transmits them to a screen or sieve. Material is fed onto the screen, and the vibration causes particles smaller than the screen openings to pass through while larger particles are retained on the screen. The machine may have multiple screens with different mesh sizes to allow for multiple separations or gradations.

Vibro sifter machines can be used for a variety of applications, such as removing oversize particles, separating different sizes of particles, and de-dusting or de-lumping materials. They can also be used for quality control purposes, ensuring that only particles of the desired size or consistency are included in a product.