Isanduku ya rotary yamashanyarazi nigice cyingenzi cyibiti bizunguruka bikoreshwa mubikorwa bitandukanye byubuhinzi nko guca nyakatsi cyangwa gutema ibihingwa.Nibikoresho byingenzi byogukwirakwiza imbaraga zatewe nimbaraga za traktori ziva kumurongo wicyuma.Hamwe na gearbox ikora neza, icyuma gishobora kuzunguruka ku muvuduko mwinshi kugirango ugabanye ibimera byuzuye kandi vuba.Isanduku ya rotary yamashanyarazi isanzwe yubatswe mubyuma biremereye byuma cyangwa aluminiyumu kugirango ihangane nibikorwa bibi n'imitwaro ihura nabyo mugihe cyo gutema.Gearbox igizwe ninjiza yinjiza, ibisohoka, ibikoresho, ibyuma, kashe nibindi bice.