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Rotary Vibrators

Rotary Vibrators For Circular Vibration

Within the range of pneumatic vibrators, the rotary vibrators are the most widespread and NetterVibration is the European leader in their application know-how.

Pneumatic Rotary Vibrators produce a circular vibration created by a rotary unbalance.

Depending on the kind of unbalance there are different Series of Rotary Vibrators:

  • Series NCB: A steel ball running on a polished race.
  • Series NCT: Turning of a turbine loaded with eccentric unbalances.

All of them have a similar operating principle. When compressed air is supplied, the unbalance (ball, roller, turbine or rotor) is accelerated to the nominal speed, creating a circular vibration with a sinusoidal shape.

Pneumatic Rotary Vibrators generate high centrifugal forces, high frequency vibrations with small (Series NCB, NCR and NCT) or medium unbalances (Series NTV).

In the following video, the result of applying a rotary vibrator (Series NCB) under a vibrating plate mounted on coil springs is shown. The movement generated is totally circular and sinusoidal.

Features and advantages:

  • Compact and robust design
  • Light weight
  • Low maintenance
  • Long lifespan
  • Frequency continuously adjustable via air pressure
  • High power to weight ratio
  • Special versions avaIlable

Tasks Performed:

  • Cleaning
  • Conveying
  • Loosening and Releasing
  • Sorting and Separating
  • Testing
  • Compacting
  • Sieving
  • Emptying

Industries Served:

  • Automotive
  • Construction
  • Food
  • Pharmaceutical
  • Chemical
  • Plastics
  • Machinery
  • Foundry
  • Manufacturing

In the chart bellow, the most significant data for pneumatic rotary vibrators are shown, along with a comparison of ball (Serie NCB), roller (Serie NCR), turbine (Series NCT) and rotor vibrators (Series NVT, NVG, NVR and NQT):

From To From To From To From To
Frequency [min-1] 7,220 42,340 10,140 34,304 5,100 45,460 9,000 17,500
Centrifugal foce [N] 222 4,866 878 9,100 288 8,659 7,130 62,260
Unbalance [cm·kg] 0.005 0.808 0.031 1.2 0.006 5 0.45 9.8
Air Consumption High Medium Low High
Noise level Medium High Low High
Lubrication Recommended Recommended Not necessary Recommended
Performance Low Medium High Very high

Contact us! We will recommend the best vibrator for your application.

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    Series NCT Pneumatic Turbine Vibrators

    Pneumatic turbine vibrators of the series NCT are particularly suitable for moving bulk materials. They can be used for emptying containers and big bags, driving chutes, sieves and vibrating tables and for the mechanical stimulation of processes.

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    Series NCB Pneumatic Ball Vibrators

    Pneumatic ball vibrators of the series NCB can be used wherever bulk materials need to be moved. They serve in the emptying of bunkers, for preventing bridging, rat-holing and adhesion. When used to drive chutes, sieves and vibrating tables, they ensure that material flow in maintained.

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    Series NCR Pneumatic Roller Vibrators

    Pneumatic roller vibrators of the series NCR are particularly suitable for the elimination or reduction of friction. They can be used for emptying bunkers and preventing adhesion to pipes and plates.

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    Series NTV Pneumatic External Vibrators

    Pneumatic external vibrators of the series NTV are especially suitable for compacting, conveying and loosening bulk material. The circular vibration is produced by eccentric rotating rotors.