In order to simplify the adjustment of an axial play of a rotor shaft (2.4) between the rotor shaft (2.4) and a stator (1) of a motor with the purpose of reducing the component expenditure and the assembly expenditure of the motor, a first clamp holder (3) and a second clamp holder (4) exert pressure on both sides of a plain bearing (5). In a first step, a rotor (2) of the motor is positioned relative to a housing (1.3) of the motor. A bearing receiver (1.1) is then fixed relative to the housing (1.3) of the motor by inserting, at an axially inner end of the bearing receiver (1.1), the second clamp holder (4); by moving the second clamp holder (4) to a second operating end position; and by fixing the second claim holder (4) at the second operating end position. Next, at an axially outer end of the bearing receiver (1.1), the plain bearing (5) and the first clamp holder (3) are axially inserted into the bearing receiver (1.1). The first clamp holder (3) is moved to and fixed at a first operating end position to adjust a pre-defined axial play of the rotor shaft (2.4). The spring stiffness of the first clamp holder (3) is higher than the spring stiffness of the second clamp holder (4). In addition, the first clamp holder (3) contacts one axial face side of the plain bearing (5), whereas the second clamp holder (4) contacts the other axial face side of the plain bearing (5) in order to exert an elastic pressure against the plain bearing (5) and against the first clamp holder (3).