The Machine consists of rectangular table rigidly connected by four support arms to two spindles at a horizontal distance of 600 mm from the centre of the table. The table can be raised and allowed to fall freely by a cam which is connected to a motor, through a distance of 25mm. The cam rotates at a rate of 60 rev/min. You can vary from 60 strokes to 240 strokes per minute by means of a controller.
The jolts are provided by a heavy duty vibratory motor, fixed to the top table. The amplitude and the frequency of jolts can be changed from 10 to 50 jolts per second by the controller. A stroke counter fitted with micro- switch is provided, which stops the machine after the predetermined Bumps. 

The Article to be tested is clamped on to the top table by means of adjustable slings.