The Grain Grade Cleaner is mainly used to size the different sizes of seeds, kernels, nuts, beans, etc. Automatic cleaning & grading procedure adopts dual vibrating motors, rubber shock absorbers, different sizes of sieves, and rubble balls. Materials are vibrated along a sieving deck which has multi-layers, and then are graded to different levels by size, while oversized and undersized impurities get removed. Customized various screen mesh and amount of sieve layers that make the vibrating grader have a wide range of applications and high grading efficiency. Carbon steel or stainless steel can be chosen for the quality standard of the screen materials. The product is installed behind the color sorting machine for final quality control, or in front of the seeds shelling machine for pre-cleaning. An optimal design, efficient grading operation, and compact structure make it an ideal grading equipment.