![]() ![]() It has noise levels of 16–18dB quieter than standard rotary sifters and 8–10dB quieter than the SS-21 Silent Sifter®. SS-22 Silent Sifter® II is the newest and quietest rotary sifter using advanced soundproofing materials and cabinet design with heavy-duty, over-center latches to pull doors tightly against cabinet gaskets to ensure a tight, dust-proof seal and enhanced noise control. SS-21 Silent Sifter® noise levels are 7–10dB lower than any other rotary sifter. A five-second audible alarm sounds at completion. The mechanical hammer assembly then taps against each sieve to aid the passage of particles through the sieve cloth. Two rubber-covered stainless-steel drive rollers continuously rotate the test sieve stack. The ASTM or ISO test sieves are placed in the cabinet, then tilted back to the testing position using the side knob. Rotary sifters do not require the sieve stack to be clamped in place. A sieve stack is capable of reaching up to 26in (660mm) high, and it can include from six 12in diameter full-height sieves to twenty 8in diameter half-height sieves, including a pan. Silent Sifters® can instantly convert between 8in, 12in, 200mm, or 300mm test sieve diameter size. The optimum size range of the Silent Sifter® is from 1in-No. ![]() State departments of transportation often prefer the rotary sifter for aggregate gradations. Time is shown on a large, bright 0.5in (12.7mm) LED display. The timer features a pause function so the test cycle can be postponed and resumed with no loss of test time. Silent Sifter Rotary Sieve Sifter, Original Design Products Description Product Options Part Number & Name Price QTY H-4317 Silent Sifter, 8' Sieve Dia, 120V 60Hz 2,295.00 H-4317.5F Silent Sifter, 8' Sieve Dia, 220V 50Hz 2,554. A safety interlock switch disables the sifter and resets the timer if the door is opened during testing.Ī digital countdown timer/controller precisely controls operation up to 99 minutes and 59 seconds. 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. Bearing and rod safety covers further eliminate exposed moving parts below the cabinet for greater compliance with OSHA regulations. Silent Sifter® II 1. Test sieves and drive mechanisms are enclosed by the cabinet to safeguard against injury. The cabinet sits atop a sturdy powder-coated stand constructed of heavy ASTM A513 steel tubing and rolls on 4in hard rubber locking swivel casters for easy mobility in the lab. The full-width cabinet door swings open fully on heavy-duty commercial-grade hinges to permit easy loading and unloading of test sieves. The cabinet is a high-quality CNC machined MDF board, precisely fitted to confine and control airborne respirable quartz, silica, crystalline particles, and other nuisance dust to further protect personnel and permit easy cleanup. The tightly sealed cabinet uses sound-deadening materials and a proprietary design to limit noise during operation. ![]() Gilson's proprietary silencing technology has resulted in units with noise levels 7–18dB quieter than standard rotary sifters. They significantly reduce operational noise levels with no loss of particle sizing accuracy and performance. Locking 4in hard rubber Swivel Casters make for easy portability in the lab.Gilson Silent Sifters® are the newest laboratory sifter models that reflect today's emphasis on noise reduction and worker protection in the laboratory environment. A side knob allows ergonomic tilt control of the cabinet between the loading and testing positions. The rugged, impact-resistant MDF board cabinet is totally enclosed for safe, dust-free operation. Settings are saved for precise repeatability between cycles and easy, one-button operation. Test cycles up 99 minutes at ☑ second can be performed, including pause functions in user selectable modes. Operation is controlled by a digital countdown timer with large LED display. Sieves continuously rotate with tapping from plastic-faced hammers to assist separation. Operation is simple and efficient stacks of test sieves are placed inside and the cabinet is tilted back. Sieve stack capacity ranges from six 12in diameter full-height sieves with pan, or up to twenty 8in diameter half-height sieves with pan. The Silent Sifter accepts 8in, 12in, 200mm or 300mm diameter test sieves for maximum versatility. The Silent Sifter ® II is the newest and most unobtrusive Rotary Sifter available today. Gilson’s innovative design delivers the same accurate separations, yet produces lower levels of nuisance noise in the lab. The Gilson Silent Sifter® improves on the popular and widely accepted rotary sieve shaker design by making it 7 to 10dB quieter than competitive models. Provides rotating and tapping action to test sieves for accurate, repeatable separations of dry granular materials and powders ![]()
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