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.
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.
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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