After homogenisation, OELCHECK looks at 27 elements. These provide information in mg/kg about wear, impurities, thickeners and additive levels in the sample.
Wear metals: Iron, chromium, tin, copper, lead, nickel, aluminium, molybdenum and zinc as well as possible levels of vanadium, titanium, silver, antimony, manganese and tungsten.
Impurities: Silicon, calcium, sodium, potassium, aluminium, cadmium, bismuth.
Additives, thickener or soap levels: Lithium, magnesium, calcium, phosphorus, zinc, barium, silicon, aluminium, molybdenum and boron.
- Increased iron and chromium values indicate that a rolling bearing has been subject to wear; copper, lead and tin show corrosion or abrasive wear from bearing cages.
- Possible impurities, such as silicon (dust), calcium (lime) or hard water deposits help to identify the causes of wear.
- Deviations between fresh and used grease in terms of the content and composition of the additive package or the thickener show that another grease is being used.