I-Downhole Motor iwuhlobo lwethuluzi lamandla embobo ephansi elithatha amandla oketshezini bese lihumusha umfutho woketshezi ube amandla emishini. Lapho uketshezi lwamandla lugelezela ku-hydraulic motor, umehluko wengcindezi owakhiwe phakathi kwe-inlet ne-outlet ye-motor ungazungeza i-rotor ngaphakathi kwe-stator, unikeze i-torque nesivinini esidingekayo ku-drill bit yokubhoboza. Ithuluzi le-screw drill lifanele imithombo eqondile, eqondisayo kanye nevundlile.