Zomangira zozungulira za pulaneti zimasinthira kusuntha kozungulira kukhala koyenda mzere. Chigawo choyendetsa galimoto ndi chodzigudubuza pakati pa screw ndi nati, kusiyana kwakukulu ndi zomangira za mpira ndikuti gawo loyendetsa katundu limagwiritsa ntchito roller yopangidwa ndi ulusi m'malo mwa mpira. Zomangira zozungulira mapulaneti zimakhala ndi malo angapo olumikizirana ndipo zimatha kupirira katundu wamkulu wokhala ndi malingaliro apamwamba kwambiri.