At a relatively low working pressure the system does not suffer the traditional breaking down of the grease structure associated with progressive systems, eliminating the possibility of oil and soap separation, and  avoiding system blockages. Grease delivery is accurately controlled with the use of dedicated metering units feeding individual grease points. Optimal lubrication is achieved by using dual main lines, operating under a parallel principle. The patented volumetric system also allows accurate dosage per lubrication point. Well suited for large hydraulic excavators and wheel loaders with long booms and sticks, the system operates even at extremely low temperatures over long distances.