Tapping Sieve Shakers delivers sharp, repeatable separations quickly over a broad range of particle sizes and material types. The exclusive Gilson circular rotation is superior to inefficient back-and-forth actions that create dead spots and prevent complete separation. Particles roll in all directions while up-taps reorient and redistribute particles to present new orientations to sieve surfaces. Down-taps help near-size particles clear the mesh openings. This vertical two-way tapping operates at 48 taps per minute. These high-capacity shakers can hold as many as twenty sieves, depending on model and sieve frame dimensions and feature a counter balanced mechanism design for stable operation, along with the EZ Clamp system to secure sieve stacks for testing. The EZ Clamp knobs with integral sieve cover slide freely up and down the clamp rods with the push of a button and secure with just a twist. The assembly stays in place for fast and easy change-out of sieve stacks. The precision digital controller features push-button start and automatically resets to programmed test time for exact repeatability. Tapping Sieve Shakers are powered by a 1/3hp heavy duty motor and housings are rugged painted steel. Available in models with 115V/60HZ or 230V/50Hz power supplies. Holds up to twenty 8in (203mm) half-height sieves or ten full-height sieves with pan. Recommended particle size range is 1in to No. 635 (25mm to 20µm). Characteristics of individual materials may affect the useful particle size range.