Prepping Machine Tools with Hydraulic Oil
Hydraulic oil viscosity is chosen based on the expected operating temperature range. Higher viscosity oils (thicker) are used in warmer temperatures to ensure adequate lubrication and performance, while lower viscosity oils (thinner) are used in colder temperatures to maintain fluidity and flow. ISO VG 46 and 32 are the most recommended hydraulic fluid weights. The operating temperature range for a typical ISO VG 46 hydraulic fluid is approximately -20°C to 70°C (-4°F to 158°F) while the operating temperature range for ISO VG 32 hydraulic fluid is typically -30°C to 70°C (-22°F to 158°F). Most shops will never face temperatures below freezing inside their production areas, but those in extreme locations may. For the folks farthest from the equator or at higher elevations, confirming you’re using the correct fluid is imperative to maintaining your machines.
Hydraulic Oil Weight
In many cases, when prepping machine tools for weather changes, it is not necessary to change the hydraulic oil weight seasonally. However, it is crucial to use the appropriate viscosity for the given operating conditions. It’s important to regularly monitor the hydraulic oil and follow the manufacturer’s recommendations for oil change intervals. If there are significant changes in operating conditions, such as a shift from summer to winter or vice versa, it may be necessary to adjust the hydraulic oil viscosity. You would need to adjust it to suit the new temperature range and maintain optimal system performance.
Consulting with a hydraulic system expert or the equipment manufacturer can provide valuable insights into the ideal hydraulic oil viscosity. The different viscosity will vary for your specific application and the appropriate adjustments needed to optimize performance based on seasonal changes.