Abstract: A motor armature includes radially projecting laminations having T-shaped electrical steel strips including recesses on a front surface of its short part, and projections on a rear surface of the short part aligned with the recesses wherein each of the two outermost electrical steel strips further has an arcuate first through hole proximate either side; and a plurality of front and rear interconnection groups comprising first, second, and third interconnections wherein each of the first and the second interconnections includes two cavities on a front surface and two protrusions on a rear surface aligned with the cavities, and the third interconnection includes two second through holes, two arcuate left and right grooves on a front surface and two protuberances on a rear surface aligned with the grooves. A method of manufacturing the motor armature is also disclosed.