Ụlọ ọrụ mmepụta ihe eji egwu olulu mmiri IADC126 17 1/2 inch (444.5mm)

Mkpụrụ tricone ezéa na-akpọkwa ya obere ígwè cone cone), e ji ihe alloy siri ike nke sitere n'aka ndị na-emepụta obere tricone cone mee ya. Anyị anaghị agbalị naanị ime ka ezé ghara iguzogide mmetụta ya, kamakwa anyị na-eme ka mmetụta ịkpụcha ezé na anya mmịfe nke ihe eji egwu mmiri dịkwuo mma. Ugbu a, enwere ike iji ngwa a nke ọma na injinịa ịgba mmiri ọgbara ọhụrụ, nke nwere ike ọ bụghị naanị ibelata ohere nke ezé gbajiri agbaji nke ọma, kamakwa ime ka nhazi nke ọnụọgụ ezé na ọnụọgụ ezé dịkwuo mma, ma jiri ọrụ nke obere ezé igwe egweri ezé mee ihe nke ọma.

N'usoro mmepụta nke bit cone, ọ na-eji ihe mgbochi esemokwu dị n'ime oghere, nke nwere ike ime ka ikike nta nke ihe na-ebu ibu dịkwuo mma ruo n'ókè ụfọdụ, ma tinyekwa ya iji belata ọdịiche nrụgide ma gbochie apịtị ịbanye na sistemụ mmanụ. Ngwaọrụ mkpuchi roba. Enwere ike ime ka ikike na ndụ ọrụ nke sistemụ mmanụ akara nke bit ahụ ka mma nke ukwuu.