Table talk

Friday, 13 July, 2007 | Supplied by:

Using two electric vibrating motors has long been the usual method of getting a true vertical action in a vibrating table. This is a good system when the application doesn't change, but often the table may be used for many purposes. This then means that either a compromise is needed between the various applications or a variable speed motor is required.

Using a single pneumatic linear vibrator automatically gives a true vertical action but can also be easily adjusted while running if required.

With the Netter NTS series from Vibration Systems & Solutions, the frequency of vibration is changed by adjusting the inlet air pressure, while the amplitude of vibration is reduced by throttling the exhaust ports. Because these models have a self-generated air cushion at each end of the piston stroke, they are very quiet with no metal-to-metal impact noise.

An additional benefit is that they do not generate heat, so they are especially suited on tables handling products which are heat sensitive, such as chocolate.

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