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Apnano Material’s nanotechnology-based lubricant Nanolub has been shown to decrease damaging wear pits on gear teeth.

The FZG Gear Research Centre of the Technical University of Munich, Germany, conducted a test on oil formulated with a Nanolub additive.

The oil was evaluated according to a recognised international test-procedure for investigating the influence of lubricating oils (especially the quality of additives in the oils) on the wear and damage of gears.

In such conditions, indications of damage appear as micro-pits or small holes on the surface of the gears.

The test can differentiate between oils of varying quality and thus helps identify a high-quality lubricant additive that provides adequate resistance to pitting and wear.

The test at the FZG Gear Research Centre follows other tests performed by Dr Adrian Oila of Newcastle University, England, on gears with heavy-duty gear-oil blended with Nanolub powder.

No wear damage to the steel lubricated with the Nanolub oil could be observed with an optical microscope, while significant wear was observed for the reference oil.

The presence of a beneficial tribofilm was detected on the gears lubricated with the Nanolub formulation.

The tribofilm continues to lubricate the moving parts in cases where the oil supply is interrupted.

Nanolub is based on nano-sized particles of tungsten disulfide (WS2), which have a structure of nested spheres, called inorganic fullerenes, the lubrication mechanism of which includes the layers slipping off under loads to form an adherent film that reduces friction and wear.

These new nano spheres were first synthesized by Dr Menachem Genut during his post-doctorate research.

When these particles are added to liquid oil or grease, Nanolub significantly enhances their lubricating properties with respect to wear and friction by an order of magnitude versus the same lubricant without this additive.

Nanolub also wraps the moving parts with a lubricating thin film called tribofilm and continues to lubricate normally for a long time, as an ‘uninterruptable lubrication source’ during severe oil leakages.

Nanolub also reduces the friction between moving parts, resulting in: a smoother ignition in case of cold start; increased power; and an improved fuel economy with lower emission of greenhouse-effect gases.

Dr Menachem Genut, chief executive officer of Apnano Materials, said: ‘The test proves that Nanolub significantly enhances automotive and industrial gear oils, improving pitting resistance.

‘Gear teeth are especially vulnerable to micro-pitting and reducing this damage can save high costs of replacement and repair, making the gears operational 24/7.

‘For example, Anglo-American, one of the largest mining companies in the world, has begun to use Nanolub in its heavy mining equipment in Chile.’

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