Abubuwan nadi na Spherical na juzu'i suna jujjuyawa tare da layuka ɗaya ko biyu na rollers masu siffar ganga da aka sanya a kusurwar zuwa kusurwar ɗamara. kwanciyar hankali mai girma, zai iya tallafawa manyan nauyin radial da matsakaicin nauyin axial.
