Abstract: A wheel balancing device. The device is provided with a pulley rotated by a rotation of a motor through a belt. The device includes a main shaft adapted to rotate with said pulley, a first bearing housing mounted around the main shaft to guide the main shaft, a second bearing housing rotatably supporting the main shaft, a pulse generator mounted near the second bearing housing and a plurality of slots for generating a pulse. A pulse detector is mounted near the pulse generator to detect the pulse signal from the pulse generator. A wheel support on which a wheel is closely supported thereon includes a hollow space. The device includes a deviation stop for preventing the wheel from deviating from the wheel support.