Axial Piston Pumps and Motors

Axial piston pumps and motors by Liebherr Axial piston pumps and motors by Liebherr

At the Bulle location in Switzerland, Liebherr has been manufacturing axial piston pumps and motors in swashplate design for more than 40 years. Development and production of the components is supported by decades of experience and stateof-the-art technologies. In order to meet the requirements of every customer optimally, the components can be put together flexibly and individually thanks to modular systems. Furthermore, the product range offers various application-specific options. Advantages Key factors for success such as durability and availability lead to high cost-effectiveness and efficiency...

The foundation for the quality and performance of Liebherr hydraulic components is laid right at the point of product development. The combination of proven design features and innovative ideas leads to products with a long service life. The use of modern development and simulation software also contributes to the optimal design of the components. 4 Axial piston pumps and motors by Liebherr

Designed to specific requirements for reliable components Optimised efficiency and high power density The axial piston units from Liebherr offer a swivel angle of up to 22 degrees. A higher swivel angle increases the conversion range and the efficiency of the pumps and motors. Furthermore, the compact rotary group and the high pressure level up to 450 bar rated pressure contribute to the high power density. Optimised flow Thanks to the use of modern flow simulation software (CFD), various simulations and measurements, pressure losses in the channelling are minimised and the flow characteristics...

Manufacturing know-how Liebherr has always attached great importance to a high level of vertical integration in the group of companies. This also applies to the components division. As such, many parts that are decisive for the quality and performance are produced for the axial piston units inhouse at the Bulle site in Switzerland. To ensure a consistently high level of quality and reliability of the high precision hydraulic components, Liebherr constantly improves all production processes and continually invests in the most advanced manufacturing facilities. Axial piston pumps and motors by...

Ideal availability for each application Function test for each component Modern quality assurance measures and state-of-the-art measuring equipment ensure early detection of faults during the entire production and assembly process, thereby following a zero defect strategy. Without exception, every axial piston unit is subjected to a functional test before delivery during which, among other things, the torque and efficiency are checked. Only absolutely flawless components leave the factory. Continuous quality assurance To ensure quality, Liebherr uses an up-to-date computerassisted quality management...

Due to the diverse range of machines and applications in the group's product portfolio, Liebherr has an extensive application experience, which is used to good effect in new and further developments. The results for the customer are optimally matched components with a range of integrated functions, optimal use of installation space and a high power density of the units. 8 Axial piston pumps and motors by Liebherr

Co-ordinated integration in the customer machine Integrated functions Thanks to optimal harmonisation between splitter box, hydraulic pumps and valve technology as well as ideal adaptation of hydraulic motors and drives, there is an increase in performances, in operating comfort and a space saving integration of components possible. Travel motors for example use an integrated brake valve, a holding brake in combination with an adequate control and can be installed as plug-in motors. High power density The DMVA double motor comprises two individually controllable rotary groups in a back-to-back...

Wide product range All hydraulic pumps and motors from Liebherr are developed in swashplate design. The product portfolio comprises pumps and motors both for open as well as closed hydraulic circuits. The pumps are designed as single, double or parallel pumps. The motors are available as single or double motors. A modular concept for controls, through-drive and mounting flanges creates flexibility and versatility in use. Axial piston pumps and motors by Liebherr

Maximum flexibility and modularity Controls Each nominal size can be equipped with a variety of controls, such as electric-proportional, pressure cut-off, load sensing, speed-dependent or torque controls. Safety valves in poppet valve design can cut-off the control pressure and centre the axial piston unit in this way. Through-drive modular system The modular system of through-drives is facilitated by a common drive design, standard flanges and coupling sleeves. In this way, it is easy to connect a hydraulic pump to other units, it can even be bigger than the one in front. Standardised mounting...

Product overview hydraulic pumps DPVG variable displacement, closed circuit, nominal pressure 450 bar, maximum pressure 500 bar Nominal size Displacement Max. speed Drive power Drive torque Volumetric flow Available controls EL, EL-DA, ELS-DA, TCE, TCH, ELS, DS, DS-DA DPVD variable displacement, open circuit, nominal pressure 400 bar, maximum pressure 450 bar (all data for each rotary group) Nominal size Displacement Max. speed Volumetric flow Drive power Drive torque Available controls EL-DA, EL-LS DPVP variable displacement, open circuit, nominal pressure 400 bar, maximum pressure 450 bar (all...

DPVO variable displacement, open circuit, nominal pressure 400 bar, maximum pressure 450 bar Nominal size Displacement Max. speed Drive power Drive torque Volumetric flow Max. through drive torque Available controls LU, EL-DA, EL-LS, LR-LS, LR-SD-DA, LS-DA LH30VO variable displacement, open circuit, nominal pressure 280 bar, maximum pressure 320 bar Nominal size Displacement Max. speed Volumetric flow at Vg max, nmax [rpm] 3,300 at nmax, qv max [l/min] 94.7 Drive power Drive torque Max. through drive torque Available controls LS-DA, LS-DE, DF-DA, DE-DA, DA, DE, VE, VK, LR Axial piston pumps and...