Abstract: The motor and gearbox combination is for use in a portable power tool having a motor section and a gearbox section. The motor section comprises a motor housing having a first end and an open second end, a first bearing supported at the first end of the motor housing, a stator fixed to the motor housing, a cap closing the open second end of the motor housing and supporting a second bearing and a motor shaft journalled at one end in the bearing and at the other end in the bearing, and a rotor mounted on the motor shaft in confrontation with the stator. The gearbox section comprises a gearbox housing accommodating a gear train and an output shaft. The cap is connected to the gearbox housing at or adjacent to the first end of the motor housing and encloses or substantially encloses the motor housing.

Abstract: The motor and gearbox combination is for use in a portable power tool having a motor section and a gearbox section. The motor section comprises a motor housing having a first end and an open second end, a first bearing supported at the first end of the motor housing, a stator fixed to the motor housing, a cap closing the open second end of the motor housing and supporting a second bearing and a motor shaft journalled at one end in the bearing and at the other end in the bearing, and a rotor mounted on the motor shaft in confrontation with the stator. The gearbox section comprises a gearbox housing accommodating a gear train and an output shaft. The cap is connected to the gearbox housing at or adjacent to the first end of the motor housing and encloses or substantially encloses the motor housing.

Abstract: A double insulated rotor (10) for an electric motor has a rotor core (14) fitted to a shaft (12) by way of an insulating sleeve (24) moulded to the shaft (12).

Abstract: A wound rotor 10 for an electric motor has a shaft 12, an insulating spacer 28 fitted to the shaft, a rotor core 18 and commutator 20 fitted to the spacer and windings 24 wound around poles of the rotor core and terminated on the commutator. A first end of the spacer 28 remote from the commutator 20 has an axially extending recess forming an annular space 30 with the shaft 12. A winding shield 32 having a tubular portion 34 and a radially extending portion 36 is fitted to the shaft 12 such that the tubular portion 34 is located within the annular space 30. The winding shield increases the electrical clearance distance and creepage distance between the windings and the shaft and/or bearing located on the shaft adjacent the shield.

Abstract: A double insulated rotor (10) for an electric motor has a rotor core (14) fitted to a shaft (12) by way of an insulating sleeve (24) moulded to the shaft (12).

Abstract: A wound rotor 10 for an electric motor has a shaft 12, an insulating spacer 28 fitted to the shaft, a rotor core 18 and commutator 20 fitted to the spacer and windings 24 wound around poles of the rotor core and terminated on the commutator. A first end of the spacer 28 remote from the commutator 20 has an axially extending recess forming an annular space 30 with the shaft 12. A winding shield 32 having a tubular portion 34 and a radially extending portion 36 is fitted to the shaft 12 such that the tubular portion 34 is located within the annular space 30. The winding shield increases the electrical clearance distance and creepage distance between the windings and the shaft and/or bearing located on the shaft adjacent the shield.