Key Technology Rotary Sizing and Grading Systems

Key Technology has enhanced its Rotary Sizing and Grading Systems including the Sliver Sizer Remover (SSR), Precision Size Grader (PSG) and Rotary Size Grader (RSG). The family of equipment enables fruit, vegetable and potato processors to size and grade product by diameter or length while conveying and removing field debris, slivers, small pieces, fines, seeds, juice and other targeted material.

With a fully welded framework, one-piece block pan, improved water and product deflection, and motor mount with catch pan, the systems improve sanitation and ease maintenance. The framework features integral formed mounting flanges and blind back standoff bosses for mounting the discharge shear. This design creates a rigid frame and enhances hygiene by reducing threaded fasteners and eliminating lamination points between surfaces to minimise areas where water can be trapped and bacteria can grow.

The motor mount features a drip pan below the gearbox with integrated standoffs. The single square tube support is positioned at a 45° angle to shed product and water.

Standard Rotary Sizing and Grading Systems that are adjusted manually feature a hard stop mechanism that prevents an operator from overtightening the adjustment blocks while closing the gap between the rolls, which prevents the blocks from being damaged. The optional Auto Adjust has been improved with the addition of electronic limit switches for full-open and full-closed positions and a mechanical fail-safe detent clutch to prevent blocks from being damaged.

Other features include: on-the-fly tuning, no pinch points, self-cleaning stainless steel rollers, sealed corrosion-resistant bearings for low maintenance and easy cleaning for quick product changeover.