Ma bearing a roller ozungulira mzere umodzi ndi gawo la gulu la ma bearing a roller ozungulira. Ma bearing awa ali ndi mphete zakunja zolimba, mphete zamkati ndi ma seti azinthu zozungulira zonse. Chifukwa chosakhala ndi khola, bearing imatha kulandira zinthu zambiri zozungulira.
