Hydraulic oils are graded according to their viscosity, an important property that determines their performance in hydraulic systems. Viscosity is often expressed as a number, such as ISO 32, ISO 46, or ISO 68. The higher the number, the thicker the oil.
In hydraulic systems, the viscosity of the oil plays a critical role in the operation and efficiency of the system. Oil needs to be of appropriate thickness to effectively lubricate and protect moving parts while also allowing for efficient flow and transmission of pressure within the system.
Comparison of the consistency of hydraulic oil 68 and 46
Hydraulic oil is an important part of the mechanical hydraulic system. Its function is to transmit power, lubricate and cool the hydraulic system. Among them, viscosity is an important indicator of hydraulic oil, which determines the fluidity and lubricity of hydraulic oil. In the model of hydraulic oil, the smaller the number, the greater the viscosity and the higher the consistency. Therefore, among hydraulic oils 68 and 46, 68 has a higher consistency.
Applicable occasions of hydraulic oil 46 and 68
Hydraulic oils 46 and 68 have different consistencies and are therefore suitable for different working environments. No. 46 hydraulic oil is generally suitable for systems with higher operating temperatures because it has a relatively lower consistency and better fluidity. In low-temperature environments, due to its higher consistency, No. 68 hydraulic oil has better lubricity and sealing properties, so it is more suitable for hydraulic systems in cold environments.

How to choose hydraulic oil
Choosing the right hydraulic oil is critical to the proper operation of your hydraulic system. When selecting hydraulic oil, the appropriate model needs to be determined based on the actual working environment and equipment requirements. For example, if the operating temperature of the hydraulic system is high, you can choose No. 46 hydraulic oil with a relatively low viscosity. And if the hydraulic system works in a low temperature environment, you can choose No. 68 hydraulic oil with a higher consistency.
In short
Hydraulic oil 68 is thicker than hydraulic oil 46. Both oils are commonly used in hydraulic systems, and the choice between them depends on the specific requirements and characteristics of the system, such as operating temperature, load and performance. speed. Thicker oils, such as Hydraulic Fluid 68, are typically used in systems that operate at higher temperatures, are heavier loaded, or are slower because they provide better lubrication and withstand higher pressures. Thinner oils, such as Hydraulic Fluid 46, are typically used in systems operating at cooler temperatures, with lighter loads, or at higher speeds because they flow better and offer less resistance.
Hydraulic oil 68 and 46 have different consistencies and are suitable for different working environments. In actual applications, the appropriate hydraulic oil needs to be selected according to specific conditions. If you are unsure about how to select and use hydraulic fluid, consult a professional hydraulic system supplier or technician.

