The Model 9155D-779 Low Frequency Long Stroke Calibration Shaker, option to the 9155 Accelerometer Calibration Workstation, represents a new level of performance in calibration grade long stroke shakers with SmartStroke™ technology. Option 9155D-779 continues the award winning PCB Group tradition of providing superior performance characteristics and ease of use while offering exceptional value and simplicity. Optical encoder and linear motor technology allow automated armature position, eliminating the suspension adjustments that plague users of traditional long stroke shakers
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