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| Illustration 1 | g01071670 |
The principal working component in the CB-214E, CB-224E, and the CB-225E vibratory systems is the eccentric weight. The vibratory motor rotates on a shaft inside the drum. The rotation of the weight generates a dynamic force. The force is significantly greater than the static weight of the machine.
The centrifugal force causes the drum to vibrate with each rotation of the weight. Amplitude is the measurement of vertical travel for the drum while the vibratory system is active. The amplitude of all three models is 0.5 mm (0.02 inch). The rotational speed of the eccentric weight shaft and the frequency of the system is expressed in vibrations per minute. The frequency of the vibratory systems on all three models is 3600 to 3840 vibrations per minute. Centrifugal force is determined by the following items: the mass of the eccentric weight shaft, the distance from the rotational center of the drum and the frequency. Centrifugal force per drum for the CB-214E is 27.6 kN (6205 lb). The centrifugal force per drum for the CB-224E and the CB-225E is 31.4 kN (7059 lb).
The machines are designed to be operated with the engine at high idle when the vibratory system is activated. The vibratory system produces the rated frequency at maximum engine rpm and with maximum pump flow.