Orbital Sieve Shakers

Gilson's Orbital Sieve Shakers are portable, easy-to-use, and outperform comparably priced sieving equipment. They are widely used in particle size testing of mineral aggregates and for sieve gradations of many other free-flowing granular materials. These cost-effective 1/4hp units are widely accepted by state transportation departments for highway materials testing. 

Both models feature a back-and-forth lateral motion combined with up/down and tilting actions. The combination of actions moves the test specimen in an orbit on the sieve cloth. Particles are exposed to the entire mesh area of the test sieve, and size fractions are quickly separated. Shakers are recommended primarily for No. 4 to No. 200 (4.75mm to 75µm) material size range but may be used with larger material sizes when specifications for sieve loading and sample quantities permit.

Both models feature Gilson's exclusive EZ-Clamp system to quickly and securely lock in sieves for testing. The easy-to-operate clamping system with an integral sieve cover slides freely up and down the clamp rods with the push of a button. Once in position, a quick twist secures the stack. When the test is complete raise just enough to remove the stack and the clamps stay in place, ready for the next test without readjustment.

All mechanical and electrical parts are enclosed in a rugged painted steel case with rubber feet. Free-standing operation is normal, but they may be securely mounted via holes provided in bottom-end flanges. Models

8 Inch/12 Inch series accommodates both 8in and 12in (200mm and 300mm) test sieves. SS-14 shakers can be purchased to operate on either 115V/60Hz or 230V/50Hz power. The 230V/50Hz powered models are shipped without an electrical plug.

• Mechanical Timer models use a classic 15-minute spring-wound mechanical timer with a manually adjustable knob-stop for improved repeatability and a “hold” feature for continuous running.
• Digital Timer models feature Gilson’s exclusive digital countdown timer with a large 0.5in (12.7mm) LED display. The timer shows precisely timed operation up to 99 minutes at ±1 second. A pause function and user-selectable modes offer greater versatility. Settings are saved between cycles for precise repeatability and easy, one-button operation.

8 Inch series accommodates 8in (200mm) test sieves. Shakers can be purchased to operate on either 115V/60Hz or 230V/50Hz power. The 230V/50Hz powered models are shipped without an electrical plug.

• Mechanical Timer models use a classic 15-minute spring-wound mechanical timer with a manually adjustable knob-stop for improved repeatability and a “hold” feature for continuous running.
• Digital Timer models feature Gilson’s exclusive digital countdown timer with a large 0.5in (12.7mm) LED display. The timer shows precisely timed operation up to 99 minutes at ±1 second. A pause function and user-selectable modes offer greater versatility. Settings are saved between cycles for precise repeatability and easy, one-button operation.