The Difference Between Open and Closed-Center Hydraulics

There are two types of hydraulics you will most commonly find in tractors on the farm today: open-center and closed-center hydraulics.

Open-center hydraulics are usually found in older tractors because of the economical advantage as well as being a much simpler design. With this system, tractors would typically use gear pumps designed to provide continuous hydraulic flow to each tractor function. The drawback to this system is that it supplies unregulated flow to each function and these pumps typically generate lots of heat.