Li-gears tsa spur ke karolo ea khaba ea baesekele e sebelisoang lisebelisoa tsa indasteri ho fetisetsa ts'ebetso ea mochini hammoho le lebelo la taolo, matla le torque. Liraka tsena tse bonolo li theko e boima, li tšoarella, tse tšepahalang le tsa ho fana ka koloi e nepahetseng, e sa lebelloang ho tsamaisa lits'ebeletso tsa indasteri tsa letsatsi le letsatsi.

Ha re etsa lisebelisoa tsa rona, re re fa matla a rona ho fetoha le maemo kapa ho bata ho batangli-geres gearsE etselitsoe ho kopana le litlhaloso tse ntle ka likopo tse fapaneng tsa indasteri.

Litoro tsa sper ke e 'ngoe ea mefuta e tsebahalang haholo ea ho nepahala ha li-cylindrity cylindrical. Li-gears tsena li bontša moralo o bonolo oa meno a otlolohileng, a tšoanang le ho potoloha 'mele oa mohloa o nang le sere se bohareng se lekanang le moqomo. Litorong tse ngata, lisebelisoa li entsoe ka sebaka se nang le kobetla e tolang 'mele o pota-potileng hlooho ntle le ho fetola sefahleho sa gear. Bore e bohareng e ka boela ea petan'o ba le ho lumella gear ea spur hore e lekane seretse se chesang kapa shaft e kentsoe.

Litoro tsa SPUR li sebelisoa likopo tsa mochini ho eketsa kapa ho fokotsa lebelo la sesebelisoa kapa matla a ho fetisetsa motsamao le matla ho tloha letotong la li-gear tse ling.