Relatively small bearing surfaces lead to specific loads up to 50N/mm². Even higher loads can occur for a short time due to edge loads. Overhead conveyors for transporting packaged goods within the factory are used to transport a wide variety of goods: car doors, electrical units, phone booths, housings, casings. With the weight of the goods, the load on the bearing points of the cardan joints also increases. The bearing points are designed for loads of up to 50 N/mm².