Key Technology, Walla Walla, Wash., expanded its family of rotary sizing and grading systems for green beans, which includes its Sliver Sizer Remover (SSR), Precision Size Grader (PSG) and Rotary Size Grader (RSG).

The new 14-roller PSG provides four rollers more than previous systems to improve grading performance, and separates beans by diameter, maintaining accuracy over time.
Ideal for grading snipped and unsnipped whole and cut green beans for fresh pack, frozen and canned product applications, this rotary sizing and grading system is available in widths of 2, 3, 4 or 5 feet (0.6 to 1.5 meters). All are 100% metric, with metric fasteners, bearings, shafts and sprockets, and achieve capacities of less than 4,000 and up to 13,000 pounds per hour.
After snippers, RSGs remove stems and small pieces prior to digital sorting to maximize the performance of the sorter. Featuring a series of rollers with gaps in between, thin and curled beans fall through as thicker beans are conveyed across the top. The rollers spin at progressive speeds, e.g., the second spins faster than the first to spread product and optional deflectors turn beans, ensuring every bean has the chance to fall through. Rollers are faceted and textured to create gentle agitation so product is lively across the top to either find a gap or roll along.
Key Technology, Inc.