The rotary assembly unit consists of three pillar blocks which are held onto
the horizontal frame, a mandrel with rotating shaft and a small AC motor, as
shown in Fig. 5. All of the three pillar blocks are fixed in place. The shaft of the
mandrel is mounted onto the machine by pulling and pushing mechanism of the
PE shaft on the freely rotating shaft. At the other end of the mandrel, a steel shaft
is attached for AC motor coupling purposes.