The device is a small to cherries, blueberries, walnuts grader picture, large pineapple, grapefruit are new grading grading equipment. And step size and grade level can be adjusted continuously in the classification range. Cherry tomatoes cherry tomatoes grader grader The device is suitable for spherical or round fruit and vegetable grading. Can be designed according to the type of classification, design hollow screw conveyor, Jining walnut grading machine, use of variable speed. Rollbar classifier suitable for round, oval fruit and vegetable grading and double roll gap can be adjusted by adjusting the frame roll bar between the rails, so as to achieve an adjustable grading sizes.