These equipment are well suited for polishing or deburing.

The working tank consists of two parts : the upper part is fixed and the bottom plate is rotating.

The gap seal must be rigorously controlled ; the use of abrasive or parts whose size approaches that of the joint must absolutely be avoided ; for example, abrasive powders are forbidden with this equipment.

During treatment, the movement of the workpieces is of the vortex type, due to the movement of the plate.

The energy generated by this type of equipment is approximately 5 times greater than in a vibrator.

However, it is about 5 times lower than in centrifugal barrel, which has not the drawback of having a seal to maintain.