Sometimes copies of vibratory equipment or drives can create trouble, as some details are not easy to copy.

The vibratory cells developed by former partnes Uhde GmbH from Germany and build in Brazil since 1989 are a standard of quality.

Nowadays similar products are being marketed in Brazil, of sometimes unknown or obscure origin, obviously a lot cheaper.

But the copies tend to create some problems, as the materials quality is not always analysed when faking the original. Gears loose their shape, cracks appear, badly manufactured roller bearings tend to brake apart.

The natural frequency vibratory conveyor for example is a specially designed product and the relation of masses and number of springs (flat and coil) is determining for the optimum operation.

The computer assisted calculation has managed to streamline longer machines with smaller drives, saving energy. Not easy to copy, despite some unfruitful attempts.

Know-how are the words.