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. Imveliso yemveli yehabhu yevili lemoto yenziwe ngeeseti ezimbini zokuthwala i-conical roller. Ukufakwa, ukugcoba, ukutywinwa kunye nokulungelelaniswa komdlalo konke kwenziwa kumgca wokuvelisa imoto.