Progressive lubrication system can be used for oil or grease lubrication when it is required to provide a positive displacement with visual or electrical monitoring.

A centralized lubrication system is described as Progressive when it contains metering pistons, which can operate in a sequence thereby giving measured amounts of lubricant to each lubrication point. As each piston in a distribution block is moved it opens the passageway for the following piston which can therefore distribute pre-determined amounts. Each lubrication point receives a measured amount of lubricant and this can normally be varied by changing the values of the individual metering screws.