An integrated motor-gear drive unit, for example an in-wheel motor, for transmitting rotational movement from a motor output shaft with cycloidal reduction to an outer rotatable body includes a mounting carrier body (3) and a secondary carrier body (2) structurally connected by at least two carrier pin devices (4, 11) forming a combined carrier body (2, 3, 4, 11); an outer rotatable body (1) rotatably supported on the mounting carrier body (3) and on the secondary carrier body (2); a motor (5) and a rotatable motor output shaft (6m), at least one cycloidal gear disc (10) and an eccentric body (8), wherein the eccentric body (8) is rotatably supporting the cycloidal gear disc (10) and wherein the motor output shaft (6m) is arranged for rotating the eccentric body (8) within the cycloidal gear disc (10), and a device to which such a unit is connected.