API fotary tricone bit IADC645 don haƙa ramin hakar ma'adinai

Bit ɗin tricone wani rami ne mai haƙori wanda aka raba shi zuwa manyan sassa uku. Bit ɗin tricone ya ƙunshi mazugi uku masu juyawa waɗanda ke aiki a cikin juna kuma kowannensu yana da nasa jerin haƙoran da aka yanke.
Samfurin yana rufe diamita na ramuka daga milimita 200 zuwa 311 (inci 7 7/8 zuwa inci 12 1/4). Ana samun bearings masu sanyaya iska da kuma waɗanda aka rufe, da kuma nau'ikan nau'ikan carbide da geometries masu sassaka tare da tsarin yankewa da aka inganta don duk yanayi.
Hakowa daga Far Eastern na iya samar da wani yanki mai faɗi na tricone wanda galibi ake amfani da shi don hako ma'adinai a cikin rami mai buɗewa, lambar IADC ta bambanta daga jerin 4 zuwa 8 wanda ya ƙunshi galibin amfani da hako ma'adinai.