The invention relates mainly to a rotary electric machine (10), notably for a motor vehicle, comprising a stator (11) and a rotor (12) which are mounted inside a casing (16) and a shaft, this shaft (13) comprising: • - at its first end, a coupling member (24) comprising a pinion, notably for coupling the said rotary electric machine (10) to a corresponding pinion of a host element (20), and • - at its second end, an adjusting portion (65) designed to allow the said shaft (13) to be turned, notably when the said rotary electric machine (10) is being inserted into a housing (21) of the said host element (20).
From the international application WO2017009547