Uncheck tables are used to shake the frames or for casting/sand separation on heavy castings. According to the casting program, the tables are equipped with perforated sheets and impact bars that also ensure intensive crushing of the pieces of sand. The uncheck tables perform a circular or linear vibration motion. The drive is provided by directed cells that are connected to the drive motor by means of standard drive shafts or also by means of unbalance motors. The tables are designed according to the mould dimensions or the frames. The load can reach 60 tons, and the surface of the table can reach 40 square meters. Compression springs are used to support the tables and isolated from vibrations.