Ropo ke mochini o sebetsang ka har'a mochini o mong-ea sheave le drum system. Geometry ea sheave groove ke eona ntho e ka sehloohong e khethollang bophelo ba mokhathala oa thapo. Ha groove profile e sa tsamaisane le bophara ba thapo, letoto la matla a mahlakoreng a mabeli-a tsejoang ka "pinching"-a potlakisa ho senyeha ha likhoele.

Radius ea Ho hloleha:

Sebaka se phetseng hantle sa sheave groove se tlameha ho ba le radius ea makhetlo a 0.525 ho isa ho 0.550 ho feta bophara ba ropo. Haeba groove e le thata haholo, e "pinches" thapo, e thibela lithapo tsa motho ka mong hore li se ke tsa thella nakong ea ho kobeha. Sena se notlela likhoele tsa ka hare 'me se lebisa mokhathala o potlakileng o phatlohileng "inter{4}}lintlha tsa ho kopana." Ka lehlakoreng le leng, haeba groove e le bophara haholo, thapo e batalla tlas'a mojaro, e lebisang ho senyeha ha mohaho kapa "ho koahela linonyana."

Phapang ea Hardness:

Ka mokhoa o loketseng, sheave groove e lokela ho ba bonolo ho feta likhoele tsa terata ho thibela thapo ho "seha" mochining. Leha ho le joalo,{1}ka har'a li-cranes tse boima, hangata re bona li-grooves tse thata. Maemong ana, bokaholimo ba thapo bo fetoha karolo ea sehlabelo. Ho SOLITE, re fana ka litlhahlobo tsa sheave-bakeng sa bareki ba rona, re sebelisa li- gauge tse nepahetseng ho netefatsa hore khokahanyo e teng lipakeng tsa tšepe le sheave ke tšebelisano e ntlafalitsoeng ea jiometry le fisiks.