SIEBTECHNIK circular-motion screening machines are freely vibrating machines, that is, the vibration circle diameter adjusts itself freely in accordance with the mass ratio of screen box and unbalance mass. Circular-motion screens have a steep throw angle and therefore require a screen panel tilt of between 10° and 18°. Exceptions to this are dewatering screens with a tilt of between 3° and 5° and steeply tilted screens, e.g. sand screens, with a tilt of between 25° and 40°.
The screen box, consisting of side walls and cross-members, can withstand all static and dynamic forces. The drive shaft with the unbalance masses runs in two rolling bearings that are arranged at the centre of gravity of the screen box. The screening machine is drive by V-belts or by a flexible coupling. Larger screening machines are additionally fitted with an intermediate transmission shaft. Bearings are either oil- or grease-lubricated. The screen box is elastically supported against the substructure on 4 spring elements. It is optionally set up to hold lengthways or crossways tensioned screen panels or for level screen decks. For dusty screening material we supply on request circular-motion screens with a dust cover or a closed dust protection box.
Screening machines for the most varied applications have formed part of our production range for many years.
Even if your screening problems seem unsolvable, you should consult us. A well-trained team of engineers and almost 100 years’ industry-specific experience are at your service.
There is a comprehensive range of accessories available for all SIEBTECHNIK screening machines. Whether it’s a spraying system, wear protection, counter-vibration frame, air suspension, dust guard, dust covers, drive consoles, double unbalance gear units, hybrid suspension or special screen cloths – thanks to its decades of experience SIEBTECHNIK gets you the best result for your requirement
Naturally our machines can be perfectly combined and offer the optimum solution as a package.
Ask us, we’re there for you.