Rotary Sizing and Grading Systems, which includes Sliver Sizer Remover (SSR), Precision Size Grader (PSG), and Rotary Size Grader (RSG), enable 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, a motor mount with catch pan, and more, the Rotary Sizing and Grading Systems improve sanitation and ease maintenance while improving product quality.