Umsebenzi ophambili wokuthwala i-hub yevili kukuthwala umthwalo kunye nokubonelela ngesikhokelo esichanekileyo sokujikeleza hub.Iyinxalenye ebaluleke kakhulu enokuthi ithwale zombini umthwalo we-radial kunye nomthwalo we-axial.Ukuthwala kwemveli kwihabhu yevili lemoto yenziwe ngamaqela amabini okuthwala i-conical roller.Ukufakwa, ukugcoba, ukutywinwa kunye nokulungelelaniswa komdlalo konke kwenziwa kumgca wokuvelisa imoto.