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(November 29, 2010)
The main drive gearboxes of wind turbines are well known to suffer in-service performance issues. The relatively rapid growth of this market, and the ever increasing demand for higher energy generating capacity, has meant that as fast as existing designs have been improved upon; newer, larger gearboxes with potentially new issues have entered the market. The result is a large number of main drive gearboxes that are in need of periodic repair and refurbishment.
A gearbox on a Vestas wind turbine at a large wind farm in the north of England recently needed servicing due to wear, Brevini Power Transmission was able to provide a full refurbishment and repair service.
Due to the costs of replacing gearboxes that have failed with new large drives, it is cost effective to keep a well managed maintenance and service schedule for existing systems. By taking the main drive out of service in a planned maintenance schedule, the unit can be refurbished and returned to full operational condition far more cost effectively. The wind farm, located in the north of England had a Lohmann & Stolterfoht drive that needed to be serviced after several years of operation. The drive comprised of a single planetary low speed input, a helical intermediate stage and helical high speed output.
Having contacted a number of national industrial repair service providers, the maintenance manager opted to use Brevini Power Transmission to inspect and service the drive. Brevini has a vast experience of refurbishing all models and makes of gearboxes; as a gearbox manufacturer it is able to draw on its many resources, from technical expertise to commercial purchasing power to ensure that it delivers a first class service at competitive rates.
Dave Brown, Brevini UK Sales Manager, comments:
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| NU2326R KOYO | 130 | 280 | 93 |
| NU2326 KOYO | 130 | 280 | 93 |