A core concept in fluid selection is understanding the temperature operating window (TOW), which is essentially the range of temperatures in which the viscosity of the fluid remains suitable for the hydraulic system. In other words, it is the range where the oil’s...
The breakdown of the lubricating film caused by insufficient viscosity is a critical factor that pump manufacturers address by specifying a maximum viscosity limit for the fluid used at startup. This is particularly important because, without this precaution,...