A winding roller motor for driving a bobbin to rotate, which is comprised of a spinning station of a textile machine, wherein the winding roller motor comprises a fixed shaft , two bearings mounted on the fixed shaft and disposed to sleeve both ends of the fixed shaft , a drum casing , end caps at both ends of the drum casing , a motor stator fixed on the fixed shaft by means of a stator shaft sleeve , a driving magnetic ring disposed on an inner wall of the drum casing at a position corresponding to the motor stator , wherein the drum casing is disposed to sleeve the bearings , wherein the end caps are disposed on the fixed shaft at the outer side of the two bearings to close the drum casing , and the winding roller motor comprises a speed measuring unit having - a speed measuring circuit board with a speed measuring circuit element , wherein the speed measuring circuit board is adapted to be connected to a control unit outside the winding roller motor via a lead and wherein the speed measuring circuit board being fixed on the fixed shaft or on an outer surface of a speed measuring shaft sleeve being press-fitted and fixed on the fixed shaft , and - a speed measuring magnetic ring being provided on the inner wall of the drum casing at a position corresponding to the speed measuring circuit element on the speed measuring circuit board , wherein the driving magnetic ring and the speed measuring magnetic ring are provided on the inner wall of the drum casing at such a certain distance with respect to each other that the speed measuring effect of the speed measuring unit is prevented from being influenced by heat generated by the motor stator. a fixed shaft , two bearings mounted on the fixed shaft and disposed to sleeve both ends of the fixed shaft , a drum casing , end caps at both ends of the drum casing , a motor stator fixed on the fixed shaft by means of a stator shaft sleeve , a driving magnetic ring disposed on an inner wall of the drum casing at a position corresponding to the motor stator , wherein the drum casing is disposed to sleeve the bearings , wherein the end caps are disposed on the fixed shaft at the outer side of the two bearings to close the drum casing , and the winding roller motor comprises a speed measuring unit having - a speed measuring circuit board with a speed measuring circuit element , wherein the speed measuring circuit board is adapted to be connected to a control unit outside the winding roller motor via a lead and wherein the speed measuring circuit board being fixed on the fixed shaft or on an outer surface of a speed measuring shaft sleeve being press-fitted and fixed on the fixed shaft , and - a speed measuring magnetic ring being provided on the inner wall of the drum casing at a position corresponding to the speed measuring circuit element on the speed measuring circuit board , - a speed measuring circuit board with a speed measuring circuit element , wherein the speed measuring circuit board is adapted to be connected to a control unit outside the winding roller motor via a lead and wherein the speed measuring circuit board being fixed on the fixed shaft or on an outer surface of a speed measuring shaft sleeve being press-fitted and fixed on the fixed shaft , and - a speed measuring magnetic ring being provided on the inner wall of the drum casing at a position corresponding to the speed measuring circuit element on the speed measuring circuit board , wherein the driving magnetic ring and the speed measuring magnetic ring are provided on the inner wall of the drum casing at such a certain distance with respect to each other that the speed measuring effect of the speed measuring unit is prevented from being influenced by heat generated by the motor stator. <EOS>