1.I-Frequency quenching kunye ne- tempering sprocket surface, ukwenzela ukuba ubunzima bunokuba yi-HRC48-52.
I-2.Supply kwi-stock yethu okanye yenziwe ngokuyalela ngokomzobo womthengi.
I-3.Ukumelana nokunxiba okugqwesileyo ukuphucula ubomi be-sprocket.