Bayani dalla-dalla na'urar nada layi biyu

Takamaiman sarƙoƙin naɗawa masu layi biyu galibi sun haɗa da samfurin sarka, adadin hanyoyin haɗi, adadin naɗawa, da sauransu.

1. Tsarin Sarka: Tsarin sarkar nadi mai layi biyu yawanci ya ƙunshi lambobi da haruffa, kamar 40-2, 50-2, da sauransu. Daga cikinsu, lambar tana wakiltar tushen ƙafafun sarkar, naúrar tana da inci 1/8; harafin yana wakiltar tsarin sarkar, kamar A, B, C, da sauransu. Nau'ikan sarka daban-daban sun dace da kayan aikin injiniya daban-daban kuma suna buƙatar a zaɓa su gwargwadon yanayin da ake ciki.
2. Adadin hanyoyin haɗi: Adadin hanyoyin haɗin sarkar nadi mai layi biyu yawanci lamba ce mai daidaito. Misali, adadin hanyoyin haɗin sarkar 40-2 shine 80. Adadin hanyoyin haɗin kai tsaye yana shafar tsayi da ƙarfin ɗaukar kaya na sarkar, kuma yana buƙatar a zaɓi shi bisa ga ainihin buƙatun.
3. Adadin na'urorin naɗawa: Faɗin hanyar haɗin sarkar naɗawa mai layuka biyu yawanci inci 1/2 ne ko inci 5/8. Faɗi daban-daban na hanyoyin haɗin sun dace da kayan aikin injiniya daban-daban. Girman faɗin hanyar haɗin zai kuma shafi ƙarfin ɗaukar kaya na sarkar. Ƙarfi da tsawon lokacin sabis.