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Medium pressure pump added to hydraulic portfolio

May 23, 2016 By Mike Santora

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liebherr-axial-piston-pump-LH30VO-72dpiLiebherr component division presents at the Bauma 2016 the newly developed LH30VO axial piston pump of swash plate design. The medium pressure pump complements the existing product portfolio in the range of 280 barnominal pressure and is suited for use in mobile machinery. The pump for all mobile applications with open circulation has a specific delivery rate of 45 cm³ per rotation and is already available with two of the most common controls.

Production-optimised design

The new medium pressure pump LH30VO for open circulation is distinguished by its compact and dynamic housing design. The design and production process were closely coordinated. High efficiency levels are thus possible with the use of new procedures in the rotary group area. Several patentable solutions contribute to an optimised production and assembly process. Not only current market requirements, but also experience in the high-pressure pump area, were taken into account during the development.

Controls and sizes according to customer requirements

Since the market launch, the LH30VO is fitted with two controls – an electric proportional pressure control with negative characteristic curve (DE) and a Load-Sensing control (LS-DA), i.e. a pressure cut-off or pressure restriction. The swash plate adjustment is extremely precise and robust. More controls are gradually being added, whose priority is determined by customer requirements. A proportional volume control (VE), a power control (LR) and an electronic pressure control with positive characteristic curve are envisaged. The pump was designed as a modular system right from the start. Larger and smaller sizes will be added to the currently available size of 45 cm³ delivery volume for each rotation. Here Liebherr also responds flexibly to customer requirements.

Further important parameters are, for example, the maximum speed of 3,000 revolutions per minute in the standard version. A 130% through-drive option is another notable highlight. Years of experience for applications in mobile machinery.

Liebherr has already been producing hydraulic pumps and motors since 1978, up to now primarily in the high-pressure pump area from 400 bar. The product portfolio is constantly being expanded. With the new medium pressure pump, on the one hand Liebherr-Components is responding to the needs of the Liebherr Group. On the other hand, the company opens up further customer potential on the international market as a flexible provider of hydraulic components. The LH30VO is mainly designed for applications in mobile machinery. It is suitable for excavators, wheel loaders and many other construction machinery – for example, as a steering pump, fan drive or as a drive for equipment cylinders.

Liebherr
www.liebherr.com

Filed Under: Pumps / Motors Tagged With: liebherr

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