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Gravity Separators - A Full Line, to Cover Every Need

Gravity Separators, also known as gravity air tables or density separators, use a combination of air for weighing, vibration for fluidization and conveying and tilt (or slope) for separation. Made for ease of use, longevity and above all, accuracy, Oliver Gravity Separators sort dry, granular, free-flowing material into streams according to particle density. This density separation can effectively separate like-size particles with as little as 0.5% difference in specific density.

Oliver offers a full line of gravity separators and gravity tables covering 11 models in several sizes and varieties, to cover the broadest possible requirements for sizing contaminant removal.

Every Oliver gravity separator is backed by the longest warranty in the business: 3 years.




Taking productivity to a whole new level. The Oliver Voyager is the first automated gravity separator with some important plusses: heavier frame to essentially eliminate vibration, quieter fans that create more air for a cleaner, healthier working environment and more precise separation. Plug and play electrical design to simplify both ease and cost of installation. Better maintenance access and improved serviceability. And the automated controls promote precision, repeatability and ease of use.


Maxi-Cap Platinum

Adding automation, memory and calibrated power control to our highest capacity gravity separators. Programmable logic puts control over every parameter in a single, central pedestal, for instant setup and 100% precision repeatability. All on the same solid frame and mechanicals that have made Maxi-Cap Gravity Separator the first choice for large volume installations.


Almond Maxi-Cap Platinum

We’ve applied our reliable and predictable automated separation technology to this Maxi-Cap Platinum, specifically for the needs of the almond industry. This is the first fully dedicated memory-driven gravity table just for almond processing.



The highest capacity gravity table available in the marketplace. Complete with hydraulic adjustments and electronic controls, these units are capable of replacing multiple unit lines with a single machine. Capacities up to 42,000 lbs/hr.



The workhorse of the separation industry from seed to coffee and beyond. Our standard time-tested design offers simple adjustments and the opportunity for multiple upgrades to make even 20-year-old bulk density machines as productive as factory new units. Running capacities up to 15,000 lbs/hr.



Our smallest precision gravity separator, built on the Hi Cap framework. Used in laboratories and universities worldwide for trial or research applications. Capable of upgrade to electronic controls.



Want more information about the benefits of gravity separation. Click here to watch our educational video on seed separation and the automation technology behind it.