How to choose hydraulic oil for excavator
Posted: Feb 11th, '25, 21:16
According to statistics, about 70% of the failures of the hydraulic system of the excavator are caused by improper selection of hydraulic oil, careless use, and untimely replacement. Therefore, the correct and reasonable selection and replacement of hydraulic oil is an important condition for exerting the working performance and economic performance of the excavator and extending the service life of the hydraulic system and its components.
Generally, the hydraulic equipment manufacturer specifies the type, brand and viscosity level of hydraulic oil used in the equipment system in the equipment manual or user manual. Users should first select hydraulic oil according to the recommendations of the equipment manufacturer.
However, there will be many occasions where the working conditions and use environment of the system used by the user are somewhat different from those specified by the equipment manufacturer. It is necessary to select hydraulic oil by yourself, and you should also choose a regular oil agent.
Factors to note when selecting hydraulic oil by yourself
01 Environmental conditions
Rationally select hydraulic oil for the characteristics of the ambient temperature of the excavator underground, on water, indoors, outdoors, in cold areas, or in severe cold areas with large temperature changes, as well as whether there are high-temperature heat sources or open flames nearby.
02 Working conditions
Oil pump type, working pressure, temperature, speed, system operation cycle and working characteristics, etc.
If the working conditions have higher requirements for actuator speed, system pressure and mechanism movement accuracy, the requirements for wear resistance and load-bearing capacity of hydraulic oil will also be higher. According to the possible operating temperature of the system, continuous operation time and the sanitation of the working environment, attention should be paid to the viscosity, high temperature performance and thermal stability of the oil when selecting oil to reduce the formation and deposition of sludge, etc.
03 Oil tank size
The smaller the oil tank, the higher the requirements for oil's antioxidant stability, extreme pressure anti-wear, air release and filterability.
04 Hydraulic parts
Different hydraulic components have a minimum configuration requirement for the hydraulic oil used. Therefore, when selecting hydraulic oil, attention should be paid to the type of hydraulic parts and the compatibility of the materials, seals, coatings or paints used with the hydraulic oil to ensure good lubrication of each moving pair, so that the components reach the design life and meet the requirements of performance.
05 Properties of hydraulic oil
Check its source, viscosity, quality, usage characteristics, scope of application, and compatibility with system and component materials to see whether each indicator can fully meet the use requirements.
06 Economic efficiency
It is necessary to comprehensively consider the price and service life of the hydraulic oil, as well as the maintenance and safe operation cycle of the hydraulic system, and focus on brands with good economic benefits.
Warm Tips
For hydraulic systems with high temperature and pressure, hydraulic oil with higher viscosity should be selected to obtain better lubricity; on the contrary, for low temperature and pressure, lower viscosity should be selected to save energy. In addition, it should also be considered that the working viscosity of the hydraulic oil at the lowest temperature of the system should not be greater than the maximum viscosity of the pump.
keywords：multifunctional skid loader，Multifunctional skid steer loader attachments，Skid Steer Loader Attachments
Choose BONOVO for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!
for more info just visit our website at www.bonovogroup.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com
Generally, the hydraulic equipment manufacturer specifies the type, brand and viscosity level of hydraulic oil used in the equipment system in the equipment manual or user manual. Users should first select hydraulic oil according to the recommendations of the equipment manufacturer.
However, there will be many occasions where the working conditions and use environment of the system used by the user are somewhat different from those specified by the equipment manufacturer. It is necessary to select hydraulic oil by yourself, and you should also choose a regular oil agent.
Factors to note when selecting hydraulic oil by yourself
01 Environmental conditions
Rationally select hydraulic oil for the characteristics of the ambient temperature of the excavator underground, on water, indoors, outdoors, in cold areas, or in severe cold areas with large temperature changes, as well as whether there are high-temperature heat sources or open flames nearby.
02 Working conditions
Oil pump type, working pressure, temperature, speed, system operation cycle and working characteristics, etc.
If the working conditions have higher requirements for actuator speed, system pressure and mechanism movement accuracy, the requirements for wear resistance and load-bearing capacity of hydraulic oil will also be higher. According to the possible operating temperature of the system, continuous operation time and the sanitation of the working environment, attention should be paid to the viscosity, high temperature performance and thermal stability of the oil when selecting oil to reduce the formation and deposition of sludge, etc.
03 Oil tank size
The smaller the oil tank, the higher the requirements for oil's antioxidant stability, extreme pressure anti-wear, air release and filterability.
04 Hydraulic parts
Different hydraulic components have a minimum configuration requirement for the hydraulic oil used. Therefore, when selecting hydraulic oil, attention should be paid to the type of hydraulic parts and the compatibility of the materials, seals, coatings or paints used with the hydraulic oil to ensure good lubrication of each moving pair, so that the components reach the design life and meet the requirements of performance.
05 Properties of hydraulic oil
Check its source, viscosity, quality, usage characteristics, scope of application, and compatibility with system and component materials to see whether each indicator can fully meet the use requirements.
06 Economic efficiency
It is necessary to comprehensively consider the price and service life of the hydraulic oil, as well as the maintenance and safe operation cycle of the hydraulic system, and focus on brands with good economic benefits.
Warm Tips
For hydraulic systems with high temperature and pressure, hydraulic oil with higher viscosity should be selected to obtain better lubricity; on the contrary, for low temperature and pressure, lower viscosity should be selected to save energy. In addition, it should also be considered that the working viscosity of the hydraulic oil at the lowest temperature of the system should not be greater than the maximum viscosity of the pump.
keywords：multifunctional skid loader，Multifunctional skid steer loader attachments，Skid Steer Loader Attachments
Choose BONOVO for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!
for more info just visit our website at www.bonovogroup.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com