Hey there! As a supplier of Aerial Work Platform Cylinders, I often get asked about how to choose the appropriate working medium for these cylinders. It's a crucial decision that can significantly impact the performance and lifespan of your aerial work platform. So, let's dive right in and explore this topic together.
Understanding the Basics
First off, let's talk about what a working medium is. In the context of an Aerial Work Platform Cylinder, the working medium is the substance that transfers force and enables the cylinder to operate. The most common working mediums are hydraulic oil and water-glycol mixtures, but there are also some specialized options out there.
The choice of working medium depends on several factors, including the operating environment, the load requirements, and the type of aerial work platform you're using. Each medium has its own set of advantages and disadvantages, so it's important to understand these before making a decision.
Hydraulic Oil
Hydraulic oil is by far the most popular working medium for aerial work platform cylinders. It has several key benefits that make it a top choice for many applications.
Lubrication: Hydraulic oil provides excellent lubrication for the moving parts inside the cylinder. This reduces friction and wear, which helps to extend the lifespan of the cylinder and other components of the aerial work platform.
Sealing: It also helps to maintain a good seal between the piston and the cylinder walls. This is crucial for preventing leaks and ensuring that the cylinder operates efficiently.
Temperature Resistance: Hydraulic oil can withstand a wide range of temperatures, making it suitable for use in both hot and cold environments. It has good viscosity stability, which means it maintains its performance even as the temperature changes.
However, there are also some drawbacks to using hydraulic oil. It can be expensive, especially if you need a high-quality synthetic oil. It's also flammable, which can be a safety concern in some applications. Additionally, hydraulic oil can be harmful to the environment if it leaks or is not disposed of properly.


If you're interested in learning more about Aerial Work Platform Cylinders, you can check out our Aerial Work Platform Cylinder page.
Water-Glycol Mixtures
Water-glycol mixtures are another option for working mediums. These mixtures typically consist of water, glycol (such as ethylene glycol or propylene glycol), and additives.
Fire Resistance: One of the biggest advantages of water-glycol mixtures is their fire resistance. Unlike hydraulic oil, they are non-flammable, which makes them a safer choice for applications where there is a risk of fire.
Cost-Effective: Water-glycol mixtures are generally less expensive than hydraulic oil. This can be a significant factor if you're working on a tight budget.
Environmental Friendliness: They are also more environmentally friendly than hydraulic oil. Water-glycol mixtures are biodegradable and have a lower impact on the environment if they leak.
On the downside, water-glycol mixtures have some limitations. They have lower lubricating properties compared to hydraulic oil, which means they may not be suitable for high-load applications. They also have a higher freezing point than hydraulic oil, so they may not be suitable for use in very cold environments without additional heating.
Other Specialized Working Mediums
In addition to hydraulic oil and water-glycol mixtures, there are some specialized working mediums available for specific applications.
Synthetic Fluids: Synthetic fluids are designed to offer superior performance in extreme conditions. They can have excellent temperature resistance, high lubricity, and good chemical stability. However, they are usually more expensive than traditional hydraulic oil.
Compressed Air: In some cases, compressed air can be used as a working medium for aerial work platform cylinders. This is known as a pneumatic cylinder. Pneumatic cylinders are relatively simple and inexpensive, and they can operate at high speeds. However, they have lower force capabilities compared to hydraulic cylinders, so they are typically used for lighter-duty applications.
Factors to Consider When Choosing a Working Medium
Now that we've covered the different types of working mediums, let's talk about the factors you should consider when making your choice.
Operating Environment: The temperature, humidity, and presence of contaminants in the operating environment are important factors. If you're working in a hot environment, you'll need a working medium that can withstand high temperatures without breaking down. If there is a risk of fire, a fire-resistant medium like water-glycol may be a better choice.
Load Requirements: The amount of force the cylinder needs to generate is also a crucial consideration. High-load applications typically require a working medium with good lubricating properties, such as hydraulic oil.
Cost: Cost is always a factor. You'll need to balance the upfront cost of the working medium with its long-term performance and maintenance requirements.
Safety: Safety should be a top priority. Consider the fire risk, toxicity, and environmental impact of the working medium.
Compatibility: Make sure the working medium is compatible with the materials used in the cylinder and other components of the aerial work platform. Some materials may react with certain working mediums, which can lead to corrosion or other problems.
Conclusion
Choosing the appropriate working medium for an aerial work platform cylinder is a complex decision that requires careful consideration of several factors. By understanding the different types of working mediums and their advantages and disadvantages, you can make an informed choice that will ensure the optimal performance and longevity of your aerial work platform.
If you're still not sure which working medium is right for your application, or if you have any other questions about Aerial Work Platform Cylinders, feel free to reach out to us. We're here to help you find the best solution for your needs. And if you're in the market for a Crane Hydraulic Cylinder, you can check out our Crane Hydraulic Cylinder page.
We're always happy to discuss your requirements and help you with your procurement. Whether you're a small business or a large corporation, we can provide you with high-quality Aerial Work Platform Cylinders and the support you need. So, don't hesitate to contact us for more information and to start the procurement process.
References
- Fluid Power Handbook
- Hydraulic and Pneumatic Systems: Theory and Applications

