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Linear Vibrators generate vibratory force by producing an impact action as a result of a reciprocating piston striking a base plate within a cylindrical housing.  The larger the housing diameter and length, the heavier the piston, and faster it reciprocates — the greater the vibratory force output.  Linear Vibration is ideal where a wet bulk material flow problem is best solved by applying force in a directed and concentrated manner to a relatively small surface area, eg, 100 in² to 324 in² area of bin wall, close to the outlet.  There are two classifications of Pneumatic Linear Vibrators:  Direct Impacting and Air-Cushioned Impacting.  Each classification has multiple models that vary in:  size; mounting style; lubrication needs; noise rating; speed, amplitude and impact force output based on controlled PSI and CFM supply; manufacturing method, design, material and finish to meet the varied needs of any manufacturing, processing or packaging application, OEM Industry requirement, and environmental demand.

Types of Piston Air Vibrators

Piston Vibrators – Direct Impact

Direct Impact Vibrators use a pressure actuated piston, contained within a rugged cylinder housing, to directly strike the Vibrator's base to transmit impact energy. This type of piston vibrator provides a metal-to-metal or metal-to-polyurethane impact which transmits a shock force directly into the area of the wall of the bin, hopper, chute or railcar to which it is attached. These Vibrators are available for applications that require a single impact or applications requiring repeated impacts, and can be timed or manually operated. Impactors are typically used for wet, semi-moist and sticky materials because hammer type vibration is less likely than continuous rotary vibration to cause material packing. Direct Impact Vibrators are offered in Std-efficiency or Hi-efficiency Models which determine speed, air usage and noise levels.

Piston Vibrators – Air-Cushioned (Quiet)

Cushioned Vibrators have a pressure actuated piston, contained within a rugged cylinder housing, which either strikes a pad of air at each end of the piston's stoke or uses a rubber tip on the strike end of the piston to lessen ambient noise levels. This cushioning provides a quieter impact but still transmits a shock force directly to where it is attached to the wall of the bin, hopper, chute or railcar. These types of Vibrators can be set to provide a single impact or repeated impacts, and can be timed or manually operated. These Impactors are typically used for wet, semi-moist and sticky materials because hammer type vibration is less likely than continuous rotary vibration to cause material packing. They are offered in Std-efficiency or Hi-efficiency Models depending on plant air availability and noise limitations.

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