Gear pumps in general
Gear pumps are the most popular pumps used in modern hydraulic systems. Marzocchi gear pumps excel in versatility, power and long life span. The simple design of a gear pump ensures relatively low maintenance costs and low purchase prices. Thanks to these properties (enriched by a continuous search into further development of the design, accuracy, choice of materials and production methods) these gear pumps are produced to the highest possible standard. Because of this a gear pump can be applied in heavy duty hydraulic applications without loss of hydraulic power. Above all our gear pumps have good mechanical and volumetric efficiencies, low noise levels, and last but not least low power to weight ratios. Marzocchi has different series of hydraulic gear pumps in their range of products which have each been designed for specific applications.
Series ALP / GHP multiple pumps
The Marzocchi ALP and GHP double pumps are also available as multiple pump. Using a modular building method front, medium and rear pumps can be connected to each other. De coupling between the different pump sections is equipped with a cast spline shaft. The ALP & GHP series Marzocchi oil pumps are ideally suited for use in both industrial as mobile applications. These series are available in different groups that can each be used as part of a multiple pump. For example it is possible to create a multiple oil pump with an ALP4 front section pump, a GHP3 medium section pump and a GHP3 rear section pump. The complete series of ALP& GHP multiple gear pumps is available from stock at Findynamica.
Recommendations for the right application of multiple gear pumps
- Make sure that the necessary capacity of the first pump section is larger than the following sections.
- Maximum pump speed is the lowest speed of the sections used.
- Operating pressures are limited by the maximum torque that can be transferred to the axle of the front (main) section.
- The torque transferred from the axle of the main pump is the total sum of the torque of each section. The maximum torque that can be transferred to the main axle of the front section is indicated in the summary table in the ALP/GHP product catalogues.
It is important that the installation instructions are followed when using a new Marzocchi pump. See the following link: Installation instructions