Circulation Lubrication system

The circulation lubrication system is a closed circuit. The so called circulation lubrication system guaranties a continuous lubricant support and a constant lubricant inflow as well as a lubricant return. The pre-defined lubricant quantity is running to the lubrication points and is led back into the lubricant tank and brought back into the circulation again. The lubricating process for all connected lubrication points recurs as long as the pump supplies lubricant to the lubricant distributor.

The lubrication procedure is mostly realised with lubricating oil. Lubricating oils have a higher viscosity and therefore they are better suited for this lubrication system than greases. The best known example is the four stroke cycle engine.


These circulation lubrication systems mostly consist of the following components:


lubricating tank

Is a reservoir for lubricants, for example oil and grease


Lubricant pump

The pump sucks the lubricant from the tank via the distributors to the lubrication points.


Progressive distributor

Lubricant distributor supplies lubrication points in a progressive order with lubricant. It consists of progressive metering elements and line elements. All components can be combined into one component.


Pipe work

Pressure pipe lines for supplying the lubrication points with the necessary lubricant quantity and return pipe lines for returning the lubricant back to the tank. The high pressure hoses have to be dimensioned according to the  pressure and flow rates.


Control and cooling devises

Pressure gauge (manometer), universal controller and cooling devise for controlling the flow rate, the pressure and the lubricant level in the tank. A cooling aggregate can be inserted in order to lubricate and cool the lubrication points.


Filter and other accessories

Cleaning tools like filters are required to eliminate the impurities as completely as possible from the lubricant before it is sucked again into the circulation. According to the application, a cooling aggregate can be still inserted.

It is absolutely necessary that the working area is completely clean before the first filling of the tank and before refilling the tank. 

Closed lubrication circulation systems need less lubricants. The re-use of lubricants and the little loss rate contribute to environment protection.


Advantages of circulation lubrication: 

  • easy construction
  • low number of construction elements
  • low costs
  • mainly a closed circuit
  • low lubricant  losses
  • cooling for the lubrication points is possible