In addition to matching all performance levels of the SS-20 Rotary Sifter, Gilson Silent Sifters® significantly reduce operational noise levels while performing accurate separations. These units are built by Gilson using better design and better materials to produce sound levels lower than any other rotary sifter available today. Faster conversion from 8 to12in or 200 to 300mm diameter sieves, easier set up, and much quieter operation are all improvements over classic rotary sifters. Sieve stack capacity ranges from six 12in diameter full-height sieves with pan, or up to twenty 8in diameter half-height sieves with pan.
Enclosed cabinets allow safe, dust-free operation. Sieve stacks are simply placed inside and the cabinet is rotated back to the testing position using an ergonomic knob, no clamping is required. A drive roller system continuously rotates the sieve stack with particle separation assisted by tapping against the stack. The digital countdown timer with large LED display precisely times operation up to 99 minutes at ±1 second. Pause function allows the cycle to be suspended and resumed with no loss of test time, and a five-second audible alarm sounds at completion of the interval. The controller is simple to program and the large, bright 0.5in (126mm) LED display is easy to read.
Hammer assemblies are 6061 aluminum alloy with Ultra High Molecular Weight (UHMW) Polyethylene heads. Rugged painted case is dense, impact-resistant MDF board and is mounted on a sturdy, powder-coated ASTM A 513 heavy steel tubing stand. The system is driven by a dependable 1/4hp continuous-duty motor.
SS-21 Silent Sifter® exhibits noise levels 7-10dB lower than any other rotary sifter for enhanced worker protection. Floor stands feature Locking Swivel Casters for easy mobility in the lab.
SS-22 Silent Sifter II ® is the newest and most unobtrusive member of the Gilson Rotary Sifter line. This Sifter uses advanced, soundproofing materials and techniques for models 16 to 18dB quieter than standard rotary sifters and 8-10dB quieter than our SS-21 Silent Sifter®. Heavy-duty, over-center lever latches pull doors tightly against case gaskets, ensuring a tight, dust-proof seal that enhances noise control. The floor stand includes 4in hard rubber Locking Casters to keep units in place during testing.
“F” suffix specifies models with 230V/50Hz voltage.
- Lower operational noise levels than any other rotary sifter on the market
- Advanced design and materials for better performance over classic sifters
- Locking Casters promote easy mobility but lock securely
- Compliant with multiple ASTM and AASHTO standards; Contact us for specific standards requirements