Putzmeister Hydraulic Oil

Elephant Fluid Power provides a comprehensive range of hydraulic components for the putzmeister concrete pump truck, including the original hydraulic pump and pump parts. In the process of providing hydraulic solutions, it is found that there are many cases of damage to hydraulic fittings caused by long-term incorrect use of hydraulic oil. Today, I would like to explain the selection of hydraulic oil for everyone.

Hydraulic oil has a great influence on the life of hydraulic system. In addition to the performance of accessories, it can also be selected according to the working environment. Generally speaking, the working environment of the hydraulic system can be roughly divided into the following four categories: indoor, fixed hydraulic equipment, with little change in ambient temperature; The ambient temperature of hydraulic equipment in open air, cold area or severe cold area varies greatly; Underground and water hydraulic equipment, with damp environment; The main working conditions of hydraulic system of hydraulic equipment near high temperature heat source and open fire are pressure and temperature. According to the above four environments and referring to the operating conditions, the selection of hydraulic oil will greatly reduce the wear of hydraulic parts. For example, its working environment is underground and above water. When the pressure of hydraulic equipment system is less than 7MPa and the temperature is lower than 50 ℃, HL can be selected; HL or HM can be selected when the system pressure is 7~14MPa, the temperature is lower than 50 ℃, HL or HM can be selected when the system pressure is 7~14MPa, and the temperature is lower than 50~80 ℃; HM can be used when the system pressure is higher than 14MPa and the temperature is lower than 80~100 ℃. After determining the oilgear hydraulic pump parts type, the viscosity used shall also be determined. The viscosity selection of hydraulic oil mainly depends on the starting, the working temperature of the system and the type of pump used. The working temperature of medium and low fixed hydraulic systems is usually 40~50 ℃ above the ambient temperature. At this temperature, the hydraulic pressure shall have a viscosity of 13~16mm2/s. If it is lower than 10mm2/s, it will increase the wear of the pump. In the high-pressure system (the pressure is greater than 30 MPa), the working temperature is 10 ℃ higher than the low pressure. In order to reduce the internal leakage of the pump, the working viscosity should be 25 mm2/s. To prevent wear of the pump, the minimum viscosity of the hydraulic oil used must be limited. The minimum viscosity of gear pump is generally 200 mm2/s, vane pump ≥ 10 mm2/s, and plunger pump ≥ 8 mm2/s.

The above are some suggestions on the selection of hydraulic oil. If you don't understand something, you can directly ask our staff and they will give you detailed suggestions. If you need some putzmeister hydraulic accessories, you are welcome to purchase elephant hydrodynamic components. Our quality is compatible with the original pump truck hydraulic components, and there are more than 1500 in stock, which can be shipped quickly.

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