Multiple research reports cite gearbox failure as the most common single cause of wind turbine breakdown. Our products extend the service life of gears and bearings to improve reliability, remove previous damage and increase efficiency.
REWITEC is an innovative phyllosilicate-based nano- and micro-particle surface treatment technology. The active particles use the lubricant as a carrier and build through adsorption a protective and repairing silicon-based coating in gears or bearings of the wind turbine. In this way it reduces friction, wear, surface roughness and temperature. These effects provide a longer lifetime and higher efficiency for wind turbines.
REWITEC products have been extensively tested by independent third parties and we have treated more than 3000 wind turbines around the world. We offer treatments for the gearbox oil, as well as the greases used within pitch, generator and main bearings as well as azimuth and pitch gears.
Not only can already stressed systems and components benefit from the surface refinement of our patented silicate formulation, our products can also be used preventively. The reduction in friction and the resulting smoothing of the surfaces prevents damage even in new or nearly new drivetrains.
The results, like the extended service life of components, removal of previous damage and the positive impact on bearings, convince not only owners, operators, technical and commercial managers but also those companies involved in the service and maintenance business of wind turbines. This is why many renowned service firms use our products and services
Repair and protect gearbox surfaces with our gearbox oil additive.
DuraGear W100 is a gearbox oil additive concentrate specifically designed for wind turbines. One litre of DuraGear® W100 treats 100 litres of gearbox oil. DuraGear W100 is REWITEC silicate particle technology dispersed in a compatible oil which is applied directly into the gearbox of a wind turbine.
DuraGear W100 offers the following benefits:
Repair and protect bearing surfaces with REWITEC high temperature grease.
GR400 is a high temperature grease, suitable for pitch, generator and main bearings and azimuth and pitch gears. It contains our patented silicate technology to reduce friction and wear. Suitable for complete replacement of an existing bearing grease and especially suitable where the existing grease has contamination from dirt or metal particles.
Suitable for treating main bearings, pitch bearings, pitch gears, generator bearings and azimuth gears. GR400 can easily be applied on site, up tower.
For existing greases with no contamination, we offer two concentrated versions, suitable for top treating existing greases:
We continuously receive test results which analyse and confirm the effectiveness into the wind power industry. The following application examples give a little insight.
The analysis of the main gearbox of a GE 1.5 SL wind turbine showed significant differences before and after treating the surface with REWITEC® products. The marks and traces were examined under a microscope with 200x resolution. The following results were clearly demonstrated:
The before / after comparison shows that the pitting damage on the gear flank has fully disappeared after treatment with REWITEC®.
The before / after comparison shows that the pitting damage on the gear flank has fully disappeared after treatment with REWITEC. The use of REWITEC® makes it clear that grey staining of the surfaces was removed significantly.
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