These weights can be adjusted to give different force outputs within the range of the motor but the speed of rotation (frequency) remains constant, unless an external speed controller is used (VFC drive).
2 pole motors are used as flow aids, with 4, 6 and 8 pole motors being most commonly used as drives for various machines.
Vibrating motors from VSS are all IP66.7 rated (except for 5 of the smaller models), with many of the 2 pole models being available in either single or three phase.
Electric External Vibrators - Netter NEG Series
Nominal frequency from 750 min-1 to 3,600 min-1
Centrifugal force from 40 N to 217,700 N
Smooth housing surface
Stainless steel weight covers up to housing size 133
Ex II 2 GD (ATEX) available
Protection IP 66-7, Insulation class F
Stainless steel versions available
Applications Series NEG electric external vibrators are used whenever, for example, conveyor chutes or sieves need to be driven. In addition, these devices can loosen material blockages and adhesions in silos. When used on concrete forms, the especially even vibration produces high surface quality and compaction of the concrete.
The special feature of the NEG is its maintenance-free operation, even in rough environmental conditions.
Design and functioning principle Electric external vibrators are unbalance motors, and, apart from a few significant differences, are very similar to conventional electric motors. The 3-phase NEG units run at 750, 1000 or VSS provides solutions. 3000 min-1 with a 230/400V, 50Hz power supply, depending on the number of poles.
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Vibration Systems & Solutions | Flow Aid Solutions
For over 40 years we have supplied flow aid solutions to keep product moving from hoppers, bins and chutes. Whether pneumatic rotary, pneumatic linear or electric rotary, the right vibrators, mounted correctly, will give just the right force to move your product smoothly and effectively. Damage to bins is eliminated and a continuous flow of product is assured. Nothing is added to your product stream, as in the case with air injection devices.
Operator "damage" is eliminated with no more hammer swinging, and noise is down to acceptable levels with most vibrators, usually far lower than noise levels of other flow promoting devices.
Vibrator mounting is non-invasive and doesn't require the cutting of your bins, with the subsequent clean up costs and risk of product contamination. There is no need for installation technicians to enter the hopper. Vibrators can often, depending upon the product, be installed without any interruption to your process.
Many types of vibrators are also used as drives for vibrating feeders and vibrating tables, especially pneumatic linear models which have very good control features.