A motor assembly comprising: a stator having a rotor receptacle; and a rotor disposed in the rotor receptacle and provided to electromagnetically interact with the stator, wherein the rotor includes: a rotor shaft provided to be rotated about a rotor axis, a magnet disposed on the rotor shaft such that the rotor shaft passes therethrough so as to form a magnetic field, wherein an outer circumferential surface of the rotor shaft and an inner circumferential surface of the magnet form a magnet bonding channel along which an adhesive cures to adhere the rotor shaft to the magnet; characterised in that support members are provided which are balancers to prevent eccentricity of the rotor, wherein the rotor shaft passes therethrough, the support members comprising: a first support member adhered to an axial end of the magnet, having a first adhesive channel in which adhesive cures to adhere the first support member to one side of the magnet; and a second support member adhered to the other axial end of the magnet, having a second adhesive channel configured to communicate with the first adhesive channel via the magnet bonding channel, in which adhesive cures to adhere the second support member to the other side of the magnet. a stator having a rotor receptacle; and a rotor disposed in the rotor receptacle and provided to electromagnetically interact with the stator, wherein the rotor includes: a rotor shaft provided to be rotated about a rotor axis, a magnet disposed on the rotor shaft such that the rotor shaft passes therethrough so as to form a magnetic field, wherein an outer circumferential surface of the rotor shaft and an inner circumferential surface of the magnet form a magnet bonding channel along which an adhesive cures to adhere the rotor shaft to the magnet; characterised in that support members are provided which are balancers to prevent eccentricity of the rotor, wherein the rotor shaft passes therethrough, the support members comprising: a first support member adhered to an axial end of the magnet, having a first adhesive channel in which adhesive cures to adhere the first support member to one side of the magnet; and a second support member adhered to the other axial end of the magnet, having a second adhesive channel configured to communicate with the first adhesive channel via the magnet bonding channel, in which adhesive cures to adhere the second support member to the other side of the magnet. a rotor shaft provided to be rotated about a rotor axis, a magnet disposed on the rotor shaft such that the rotor shaft passes therethrough so as to form a magnetic field, wherein an outer circumferential surface of the rotor shaft and an inner circumferential surface of the magnet form a magnet bonding channel along which an adhesive cures to adhere the rotor shaft to the magnet; characterised in that support members are provided which are balancers to prevent eccentricity of the rotor, wherein the rotor shaft passes therethrough, the support members comprising: a first support member adhered to an axial end of the magnet, having a first adhesive channel in which adhesive cures to adhere the first support member to one side of the magnet; and a second support member adhered to the other axial end of the magnet, having a second adhesive channel configured to communicate with the first adhesive channel via the magnet bonding channel, in which adhesive cures to adhere the second support member to the other side of the magnet. a first support member adhered to an axial end of the magnet, having a first adhesive channel in which adhesive cures to adhere the first support member to one side of the magnet; and a second support member adhered to the other axial end of the magnet, having a second adhesive channel configured to communicate with the first adhesive channel via the magnet bonding channel, in which adhesive cures to adhere the second support member to the other side of the magnet.