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When a gearbox on a Vestas wind turbine at a large wind farm in north England needed servicing due to wear, Brevini Power Transmission provided a full refurbishment and repair service.

The drive needing service after several years of operation was a Lohmann and Stolterfoht drive, comprising 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 Versas maintenance manager opted to use Brevini to inspect and service the drive.

Brevini’s pre-strip-down inspection of the drive revealed that a number of its components had worn beyond acceptable limits, prompting the company to recommend that all critical components were NDT crack tested and a number of parts were replaced.

Areas affected included corroded and worn disc brakes, cracked seals on the brake callipers, split oil cooler hoses and corrosion on the intermediate shaft.

A full set of bearings, replacement intermediate hollow shaft and planet section sun pinion transfer shaft were recommended, along with a number of ancillary parts including the oil filter, hoses, brake pads and seals.

All replacement parts were sourced from the OEM and the drive was returned to its original specification.

As a gearbox manufacturer, Brevini is able to draw on resources ranging from technical expertise to commercial purchasing power to ensure it delivers quality service at competitive rates.

The company offers a range of services including repair, refurbishment and replacement for all types and manufacturers on units up to 15 ton, including a removal and reinstallation service and any redesign and up-rating that may be required.

All work is carried out by trained service engineers in accordance with Brevini’s ISO9001:2008 quality system.

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