**3. Bifurcation diagram**

The contrast in angular displacement for the cam and the follower is used in the calculation of bifurcation diagram [10, 11]. **Figure 4** is built at the follower guide's from inside (I.D. = 19 mm) when the follower offsets to the right and left (O = 50 mm).

The periodic motion is shown in **Figure 4** in which it has the blue trend at cam speeds (N = 100–300 rpm) while the quasi-periodic motion of the follower has red trend at cam speeds (N = 100 rpm). The transition to chaos for the system when the follower offsets to the left is grown faster than the system when the follower offsets to the right as indicated in **Figures 5** and **6**. It can be concluded that the transition to chaos is incremented with the increment in cam speeds.
