Mpekere ezé API Mill IADC217 12 1/4 inch (311mm) maka igwu olulu mmiri

Tricone bit bụ ngwa ọrụ dị mkpa maka igwu mmanụ, arụmọrụ ọrụ ya ga-emetụta kpọmkwem ogo igwu ala, arụmọrụ igwu ala na ọnụ ahịa igwu ala. Ịgba mmanụ na igwu ala bụ ihe a na-ejikarị eme ihe ma ọ bụ obere obere cone bit. Obere obere cone nwere mmetụta nke ịma jijiji, ịgwepịa na ịkpụ nkume nhazi na ntụgharị, yabụ enwere ike ịgbanwe obere obere cone ahụ ka ọ bụrụ oyi akwa dị nro, ọkara na siri ike. Karịsịa na obere obere jet cone bit na ogologo nozzle mgbe mmalite nke obere obere cone bit gasịrị, ọsọ igwu cone drill bit ka mma nke ukwuu, akụkọ ihe mere eme nke mmepe nke obere obere cone bụ nnukwu mgbanwe. Enwere ike kewaa obere obere cone ahụ n'ime ezé (ezé) site na ụdị ezé, ezé (bit) (ezé e tinyere ezé carbide) obere obere cone bit; dịka ọnụọgụgụ ezé si dị, enwere ike kewaa otu obere obere, okpukpu abụọ, obere atọ na ọtụtụ obere obere. N'ụlọ na mba ofesi, a na-ejikarị ọtụtụ, nke kachasị bụ obere obere Tricone.