The Ling Model 330 Shaker is designed to provide a convenient means for high level vibration testing under conditions of high static loads, high altitudes, and high humidity. It is a wide frequency band electro-dynamic force transducer capable of producing a force of 4000 pounds (sine vector). The shaker operates in a 5 to 3000 Hz frequency range from either sine or random waveform input, converting the electrical current supplied into mechanical force.
The shaker consists of a magnetic structure which houses and supports an armature assembly and field coils. The structure is mounted on trunnion assemblies which allow ±180° rotation of the thrust axis. The trunnion assemblies are mounted on a base equipped with casters for portability.
The shaker contains armature overtravel and overtemperature protection switches and a field overtemperature protection switch.
The shaker employs a completely sealed cooling system designed to cool directly from a clean raw-water supply.
|Rated force (sine vector)
|Useful frequency range
||5 to 3,000 Hz
|Rated acceleration (bare table)
||70 in. per sec.
||1 in. peak to peak
|Fundamental resonant frequency (bare table)
||530 lbs. per in.
|Effective overtravel limits (from the neutral horizontal position)
||0.5 inch in the outward direction
|0.6 inch in the inward direction
|Body suspension natural frequency
|Maximum load 10g vector
|Maximum load 20g vector
|Maximum load 100g vector