It precisely controls operation up to 99 minutes ☑ second for precise repeatability. The digital countdown timer has a large and bright 0.5in (126mm) LED display. Bearing and rod safety covers eliminate exposed moving parts below the cabinet for greater compliance with OSHA regulations.
A dependable 1/4hp continuous-duty motor drives the system. Tapping hammer assemblies are 6061 aluminum alloy with Ultra High Molecular Weight (UHMW) Polyethylene heads. A door safety interlock switch stops the sifter if the door is opened during testing and resets the timer. Test sieves and drive mechanisms are enclosed by the cabinet for safe operation.Īn ergonomically positioned side knob allows for easy tilting of the cabinet between loading and testing positions. The cabinet is mounted on a sturdy, powder-coated stand constructed of heavy ASTM A513 steel tubing. The full-width door is attached with heavy-duty commercial grade hinges to permit easy handling of the sieve stack.
The totally enclosed cabinet is constructed of a high-quality CNC machined MDF board, precisely fitted to confine and control airborne respirable quartz, silica, crystalline particles, and other nuisance dust. Sieve stack capacity ranges from six 12in/300mm diameter full-height sieves with a pan, or up to twenty 8in/200mm diameter half-height sieves with a pan. Gilson Rotary Sifters convert in seconds to accept 8in, 12in, 200mm, or 300mm diameter test sieves with a simple turn of a spring-loaded knob and repositioning of the turntable. The SS-20 performs accurate particle size testing on construction aggregates and other granular materials in the 1in-No. Many state departments of transportation prefer the rotary sifter for aggregate gradations. These quiet, high-quality models are safer to operate and have a longer service life.
The innovative design puts the SS-20 model a step above ordinary rotary sifters while maintaining compliance with specification requirements. Gilson Rotary Sifters have an advanced classic design with upgraded materials and efficient operation.
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