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A J&H Velocity Breaker is shown installed onto the feed inlet of a J&H Vibrating Screen Feeder in the image at upper-right. Vibrating Feeders. J&H Vibrating Feeders use J&H JHV 1800 Vibrator motors to create a high frequency, small amplitude vibration in the spreader pan or trough. This vibration produces a fluidized zone of product material at ...