As a supplier of Ashless Hydraulic Oil HM68#, I often encounter inquiries from customers in the food - processing machinery industry about the suitability of our product for their hydraulic systems. In this blog, I will comprehensively analyze whether Ashless Hydraulic Oil HM68# is appropriate for hydraulic systems in food - processing machinery.


Characteristics of Ashless Hydraulic Oil HM68#
Ashless Hydraulic Oil HM68# is a high - performance lubricant within the Ash - free Anti - wear Hydraulic Oil series. It is formulated with advanced additive technology to provide excellent anti - wear protection, oxidation stability, and demulsibility.
The anti - wear property of Ashless Hydraulic Oil HM68# is crucial for hydraulic systems. In a hydraulic system, the moving parts such as pumps, valves, and cylinders are subject to high - pressure and high - speed contact. The anti - wear additives in HM68# form a protective film on the metal surfaces, reducing friction and wear. This helps to extend the service life of the hydraulic components and maintain the efficiency of the system.
Oxidation stability is another important characteristic. Over time, hydraulic oil can oxidize when exposed to oxygen and high temperatures. Oxidation can lead to the formation of sludge, varnish, and acids, which can damage the hydraulic components and reduce the performance of the system. Ashless Hydraulic Oil HM68# has excellent oxidation stability, which means it can resist oxidation for a long time, ensuring the long - term reliability of the hydraulic system.
Demulsibility is also significant. In some operating environments, water may enter the hydraulic system. If the hydraulic oil cannot separate from water effectively, it can cause corrosion, reduced lubrication performance, and even system failure. Ashless Hydraulic Oil HM68# has good demulsibility, allowing it to separate from water quickly and maintain its lubricating properties.
Requirements of Hydraulic Systems in Food - Processing Machinery
Hydraulic systems in food - processing machinery have some specific requirements due to the nature of the food - processing industry.
Food Safety
The most critical requirement is food safety. Any lubricant used in food - processing machinery must comply with relevant food safety regulations. There is a risk of incidental contact between the hydraulic oil and the food products. Therefore, the hydraulic oil should be non - toxic and non - harmful to human health.
Cleanliness
Food - processing environments demand high levels of cleanliness. The hydraulic oil should be free from contaminants such as dirt, dust, and metal particles. Contaminants in the hydraulic oil can not only damage the hydraulic components but also pose a risk of food contamination.
Compatibility with Seals and Materials
The hydraulic oil should be compatible with the seals and other materials used in the hydraulic system. Incompatible oils can cause seal swelling, shrinking, or hardening, leading to leaks and system failures.
Suitability Analysis of Ashless Hydraulic Oil HM68# for Food - Processing Machinery
Food Safety Considerations
Our Ashless Hydraulic Oil HM68# is formulated with ingredients that meet strict food - safety standards. It is designed to minimize the risk of incidental food contact. Although it is not a food - grade lubricant in the strictest sense, it is formulated to be non - toxic and have low potential for harm in case of accidental contact with food. However, for applications where direct food contact is possible, a dedicated food - grade hydraulic oil should be used.
Cleanliness
We ensure the high cleanliness of Ashless Hydraulic Oil HM68# during the manufacturing process. It is produced in a clean environment and undergoes strict quality control to minimize the presence of contaminants. Additionally, the oxidation stability and anti - wear properties of HM68# help to reduce the generation of internal contaminants within the hydraulic system.
Compatibility with Seals and Materials
Ashless Hydraulic Oil HM68# has been tested for compatibility with a wide range of seals and materials commonly used in hydraulic systems. It has good compatibility, which means it will not cause significant damage to the seals and other components, ensuring the long - term stability of the hydraulic system.
Comparison with Other Grades in the Series
In our product series, we also offer Ashless Hydraulic Oil HM32# and Ashless Hydraulic Oil HM46#. The main difference between these grades lies in their viscosity.
Ashless Hydraulic Oil HM32# has a lower viscosity compared to HM68#. It is more suitable for hydraulic systems operating at lower temperatures or with high - speed components. HM46# has a viscosity between HM32# and HM68#.
For food - processing machinery, the choice between these grades depends on the specific operating conditions of the hydraulic system. If the system operates at relatively low temperatures or requires high - speed response, HM32# may be a better choice. If the system operates at medium temperatures and normal operating conditions, HM46# can be considered. Ashless Hydraulic Oil HM68# is more suitable for hydraulic systems operating at higher temperatures or with high - pressure requirements.
Case Studies
We have received positive feedback from some food - processing machinery manufacturers who have used Ashless Hydraulic Oil HM68# in their hydraulic systems. One customer, a meat - processing plant, reported that after switching to HM68#, the wear of their hydraulic pumps was significantly reduced, and the frequency of system maintenance was also decreased. Another customer in the dairy - processing industry found that the oxidation stability of HM68# helped to keep their hydraulic system running smoothly for a longer time, reducing the risk of product contamination due to system failures.
Conclusion
In general, Ashless Hydraulic Oil HM68# can be a suitable choice for hydraulic systems in food - processing machinery under certain conditions. Its excellent anti - wear, oxidation stability, and demulsibility properties meet the basic requirements of hydraulic systems. It also meets the food - safety and cleanliness requirements to a large extent. However, for applications where direct food contact is possible, additional precautions or the use of food - grade lubricants should be considered.
If you are a food - processing machinery manufacturer or operator and are interested in our Ashless Hydraulic Oil HM68#, we welcome you to contact us for more information and to discuss your specific requirements. We can provide detailed product specifications, technical support, and samples for your evaluation. Let's work together to ensure the reliable operation of your hydraulic systems.
References
- "Hydraulic System Design and Maintenance Handbook", [Author's Name], [Publication Year]
- "Food Safety Regulations for Lubricants in the Food - Processing Industry", [Regulatory Body], [Publication Year]
- "Lubricant Technology and Applications", [Author's Name], [Publication Year]




