Contact Details:

Parker Hannifin (Africa) (Pty) Ltd

Parker Place
10 Berne Avenue
Aeroport
Kempton Park
Gauteng
South Africa

Tel: +27 (0)11 961-0700
Fax: +27 (0)11 392-7213

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Parker Hannifin has introduced a full range of Electro-Hydraulic Pump (EHP) kits which will make it easier for OEMs in mobile markets to create more energy-efficient, greener machines. Designed for use with medium and high power hydraulic cylinders and power steering systems, the new kits provide intelligent control in applications such as materials handling and construction, buses, coaches, trucks, wheel loaders, excavators, street sweepers, reach stackers and mobile cranes.

 

EHP kits comprise an electric motor coupled directly to a hydraulic pump controlled by a high performance hardened drive enabling the power used by a machine to be matched to the exact amount of energy required for a given task. Unlike conventional systems, which permanently rotate with a variable displacement pump connected to a PTO (power takeoff), Parker’s EHP solution rotates only when needed and at the required speed using a fixed displacement pump. On top of that, when comparing the fixed displacement pump technology with variable speed electric motors, to the usual load sensing (LS) variable displacement pump technology fitted on the ICE, there is significant saving of to 20 to 30 bars during movement and stand-by, and no more LS hydraulic lines.

 

Specifying the correct EHP could not be simpler. In fact, just three application specifics are required: flow, pressure and voltage. The pump kits are offered in flow rates up to 300 l/min, pressure up to 300 bars, and up to 640 VDC rated voltage to adapt to every battery pack.

 

These new variable speed, CE-marked systems consist of a low or high voltage drive, a synchronous motor (asynchronous motor available on request), and a T7 hydraulic vane pump (other technologies on request) all perfectly matched, optimizing performance and removing the need for adaptor kits

 

Among the many benefits of this highly flexible system are: low inertia; pressure and flow (PQ) control; closed-loop control with configurable drives; regenerative capability for better efficiency; and improved control of acceleration and deceleration.

 

Ultimately, Parker’s EHP offers OEMs a multi-technology solution from a single supplier, helping to meet the demand for power system downsizing. What’s more, as well as reduced fuel consumption and emissions, the end user also enjoys lower noise levels and maintenance costs.