Contemporary gear trains are faced with increasing expectations pertaining high kinematic accuracy and non-backlash operation in precision lathes and indexing heads [1], geardrives [2], especially inside mechanisms dealing with accuracy of motion as well as positioning systems [3,4]. Even the most precise conventional spur gear drives cannot provide nonbacklash operation of a machine. This results in the pursuit of backlash elimination by executing new designs [5–7], as well as manufacturing gear train components with high accuracy [5,8]. These factors should be accompanied by optimal working conditions, so as to diminish the wearing of components [9,10]. The presence and variations of backlash in a drive is a typical situation resulting from manufacturing inaccuracy ofthe drive's components [5], imprecise installation [11–13], conditions of operation [14,6], drive components' thermal expansion [15], wear of some of the components [9,10], etc. And so the strive to eliminate the backlash in kinematic systems and drives is an important technological and design task.