HES System

We were the pioneers of the servo-hydraulic technology

Ripress has been the first European maker to implement a servo-proportional system (composed by inverter, servomotor and gearpump) on an injection moulding machine for thermoplastics
The Ripress solution, called H.E.S. System, anticipates the times regarding the energy saving, dynamics and noise reduction. The virtually immediate response of the servomotors, compared with the traditional variable displacement pumps with electro-mechanical drive, allows an improvement in performance, efficiency and – especially – reliability. The perfect management of pressures and deliveries of the fluid, instantly adjusted to the actual need, prevents the waste of energy and allows a considerable rationalization of the hydraulic circuit. A simplification that also pays off in terms of a matchless value per money, due to the significant cost saving in the making.

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HES System

Energy Saving

Actual monitoring show that the energy saving granted by the HES application ranges from 30% to 75% in compare with the traditionan hydraulics. Such a performance is comparable to those of the electric machines.

Repeatability and reliability

Repeatability and precision of the P&Q parameters, whose tolerance is granted as inferior to 1% in compare with the input value

Dynamic and quick servo-hydraulic response

Response (intervention speed) comparable to those of the electric machines

Unmatchable simplicity

The hydraulic system is simplified through the elimination of all proportional P&Q valves

Super-compact design

The system needs 35% less space in compare with a traditional hydraulic system of equivalent performance

Low operating noise

Average reduction of 30% in all operating conditions

Low heating of hydraulic fluids

Even in the harshest operating conditions the temperature of hydraulic fluid remains perfectly controlled, as the system prevents any chance of overheating and, in general, obtains a power saving for the cooling of the fluids up to 80% in compare with the traditional fixed-pump hydraulic systems.

Low heating of the working environment

The efficient control of the fluid temperature and the low interchange of heat prevent the uncomfortable warming of the operating area