Matching a sieve shaker to material characteristics saves time and effort, and ensures superior accuracy and repeatability. The tapping function enhances performance of many premium sieve shakers. Pause is a function on better quality Vibratory Shakers with an effect similar to tapping. Programming a pause into the test cycle causes particles to briefly stop, and then reorient themselves when agitation resumes. Gilson offers a diverse line of Sieve Shakers suited to your material characteristics.
View Sieve Shaker Comparison Chart
- Mechanical Tapping Sieve Shakers offer a performance-enhancing feature included on many premium sieve shakers with vibratory, circular, orbital, or other primary actions. Repetitive mechanical tapping of the sieve stack reorients particles, aids passage, and prevents blinding. Tapping sieve shakers improve the passage of fines for nearly any material.
- Rotary Sifters with Tapping hold a sieve stack in an enclosed cabinet tilted at an angle while rollers rotate the sieves to continuously reorient particles. Individual hammers tap on each sieve to enhance passage of near-size particles. Rotary sifters have few exposed moving parts and are relatively quiet and dust-free. Clamping systems are not required. Rotary Sifters work well for mineral aggregates and other materials from No.4 to No.635 (4.75mm to 20µm).
- Orbital Sieve Shakers mimic the motion of hand sieving and are an economical choice for free-flowing materials. The particles are essentially rolled around on the mesh surface until they fall through an opening. The sieve stack is suspended from a single point at the top while the base is moved in an orbital motion. A bumping action is sometimes introduced as the sieve stack oscillates. Orbital shakers work well for most materials between No.4 and No.200 (4.75mm to 75μm).
- Vibratory Sieve Shakers use electromagnetic energy to agitate particles. An ideal setting creates a fluid bed of material moving across the mesh. This optimizes the number of openings tried by the sample material. Adjustments for vibration amplitude and frequency on some shakers allow optimization for a wider range of materials. Vibratory Shakers perform well on most materials between No.10 to No.635 (2mm to 20μm).
- Sonic Sieve Shakers use up to 3,600 sonic energy pulses per minute to oscillate an air column enclosed within the sieve stack. This continuous agitation excites the particles and continuously reorients particles to the mesh surface. Programmable horizontal and vertical tapping clears the sieves and allows accurate separations down to 5μm.
- Circular Sieve Shakers move the sieve stack on a flat, circular plane. Particles are evenly distributed around most of the sieve surfaces, and randomly fall through openings. Units with circular action alone are adequate for coarser free-flowing materials between No.4 and No.100 (4.75mm and 150μm). Addition of a tapping mechanism enhances performance and allows efficient separation over a wider range of materials from 1 or 2in (25 to 50mm) to No.635 (20µm).
- Mikro Air Jet Sieves™ use positive air pressure through a rotating slotted nozzle to gently fluidize samples in a single 200mm diameter sieve. Fines are collected in a canister with a vacuum system. The Air Jet is best for materials finer than No.4 (4.75mm).
- Gilson Wet-Vac® Sieve Shakers are completely self-contained wet-sieving particle sizing systems and are widely used in testing applications for coal and coke. Water tanks, pumps, and spray heads are built-in to these vibratory shakers and fines are collected in filter paper assemblies.