Frequently asked questions
The application of a film of grease between moving parts in a machine or vehicle. The film of grease prevents any metallic contact between moving parts, like pins and bushings, bearings and steering knuckles. It also stops dirt, water and dust entering the lubrication point and prevents corrosion. Inadequate lubrication causes wear and tear, machine and vehicle failure and increases costs.
Grease is a thickened oil and always consists of two different components: oil and a thickener. The oil is the actual lubricant, while the thickener ensures that the oil remains in place.
Two factors determine the type of grease applicable: the thickener-oil ratio and the type of thickener used. The NLGI classification is the globally recognised standard for specification of the oil-thickener ratio. NLGI-0 grease is frequently use for transport applications, while NLGI-2 grease is the standard for earthmoving and construction equipment. The thickener type determines the application area.
There are three different ways in which grease can be applied: 1) manually, 2) automatically 3) centralised.
The application of grease to the surface of the pins and bushings to be lubricated. This could be done with a manual grease gun, for example.
Automatic lubrication involves pumping the grease from the reservoir of the lubrication system to the lubrication points. The quantity of grease per lubrication point and the interval can both be set in advance.
When using a centralisation system, lines are used to relocate all of the individual lubrication points to one easy-to-reach point. A grease gun can then be used to pump grease to all of the various lubrication points from the point in question.
- Progressive systems. All lubrication points are consecutively lubricated with the predetermined amount of grease.
- Parallel systems. All lubrication points are administered the predetermined amount of grease at the same time.
A pump, a controller (a timer, for example), a grease reservoir, divider blocks and lines to the lubrication points.
A pump, a controller (a timer, for example), a grease reservoir, distribution blocks, metering units, lines from the pump to the distribution blocks and lines to the lubrication points.
For all situations in which moving parts need to be separated from each other by means of a film of grease. Groeneveld lubrication systems are most frequently used for wheel loaders, excavators, trucks, trailers, buses, port equipment, mining machines, forestry equipment and agricultural equipment.