2016 Hyundai Construction Equipment Single Drum HR110C-9

The HYUNDAI vibration system consists of an exciter shaft with a rigid welded, off-center weight. In addition, there is a metallic housing containing a fl exible mass which is brought into an off-center position by means of centrifugal force. The fl exible mass consists of steel balls 3mm (roller bearings) inserted with graphite for dry lubrication. Changing the sense of rotation causes the position of center of gravity of the fl exible mass to shift. Depending on the sense of rotation of the vibration shaft, the steel ball mass is either added to or subtracted from the rigid eccentric mass via the centrifugal force. This means that a sense of rotation adds an even greater eccentricity to the existing unbalanced mass.