ROLLER AS-BRG& 5282932 - Caterpillar

Illustration 1 g00942762
Support and vibratory drive
(1) Drum motor
(2) Eccentric weights
(3) Vibratory motor
(4) Coupling shaft The drum assembly contains two eccentric weights (2). The eccentric weights are connected to individual splined shafts. Vibratory motor (3) is splined to the shaft of the right eccentric weight, and the shafts of the right and left eccentric weights are connected by coupling shaft (4).When the vibratory system is ON, the vibratory motor rotates the eccentric weights by rotating the splined shafts. Since the center of gravity of the eccentric weights is not at the center of the shafts, rotation of the eccentric weights causes the drum to vibrate.
Illustration 2 g00942763
Eccentric weight cross section (High amplitude)
(2) Eccentric weight
(5) Steel shot Eccentric weight (2) is partially filled with steel shot (5). When the vibratory switch is placed in the HIGH AMPLITUDE mode, the eccentric weight rotates in one direction. The steel shot is captured in one area of the weight compartment, as shown above.The weight of the steel shot in this position increase the fixed eccentricity of the weight. The drum assembly will then vibrate in the HIGH AMPLITUDE mode.
Illustration 3 g00942765
Eccentric weight cross section (Low amplitude)
(2) Eccentric weight
(5) Steel shot When the vibratory switch is placed in the LOW AMPLITUDE mode, eccentric weight (2) rotates in the opposite direction. This causes steel shot (5) to be captured in the opposite area of the weight compartment, as shown above.The weight of the steel shot in this position offsets the fixed eccentricity of the weight. This causes the drum assembly to vibrate in the LOW AMPLITUDE mode.