>>> Improved performance of centrifuge operations
Since the gearbox is not used, with shear pins, overload couplings, reset mechanisms, or pinion drive systems (when gearboxes have back drives fitted) - a common source of breakdown is eliminated. Viscotherm drives are more responsive to scroll torque fluctuations, and because of the exact control of differential speed, with built-in safety features, the whole centrifuge operation can be improved-both in throughput and sedimentation efficiency, with drier solids discharge and cleaner centrate.

>>> Simplicity and reliability
Decanter centrifuges are often place in a harsh environment (Dust, humidity, heat and so on). The hydrostatic drive system is especially suited to harsh environmental conditions since it is strongly constructed, stable under fluctuating loading conditions, and reliable. it is especially suited to explosion proof applications, as it contains a minimum of electrical components, which are easily obtainable in ex-proof version, unlike electrical back drives.

>>> Excellent weight/torque ratio
The product overview shows the complete range of Viscotherm Rotodiffs and their advantageous weight/torque ratios. On an average, hydrostatic drives have, in comparison with a standard gearbox, about half the weight of same torque capacity. This means that higher bowl speeds can be achieved, because the reduced overhung loading, together with its reduced moment of inertia, considerably extends the vibration limits of the machine.

>>> Behavior of drives during particular operations
Due to the cinematic linkage, as mentioned at the beginning, the hydrostatic scroll drive system will operate:

The danger of plugging (and therefore a total disassembly of the centrifuge) is almost eliminated. Flushing is also assisted, since a high differential speed can be obtained at near-zero bowl speed.

>>> Reduction or elimination of 'chatter'
Some products when sedimented in a centrifuge, have a tendency to cause 'chatter', or torsional vibration (Starches, Cellulose derivatives, some crystalline products, PVC, Casein, Co-agulated blood etc.) The Viscotherm Drives have an inherent damping effect on torsional vibration, since the power is transferred by oil, which is slightly compressible. The damping effect can be enhanced, or 'tuned', by addition of hydraulic accumulators if necessary.