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Guodian United Power Technology Company

Guodian Turns to Eaton for Wind Power Hydraulics

Guodian wind turbines are producing electricity all over the world with the help of Eaton hydraulic power units for yaw and shaft braking functions.

Thad Samuelson
Silvertip Supply Owner


Eaton is providing key wind power technologies to Guodian United Power Technology Company Ltd., a subsidiary of China Guodian Corporation. Established in 2007, Guodian develops and manufactures large-scale wind turbines for inland, onshore, and offshore applications.

Eaton’s Hydraulics Group in Shanghai, China, is supplying hydraulic power units equipped with Vickers® and Integrated Hydraulics™ screw-in cartridge valves for yaw and shaft braking functions on Guodian wind turbines produced in Hebei Province, China. Eaton is also supplying Aeroquip® MatchMate Plus® hose and Global TTC crimp fittings for braking system functions.

The business is generating approximately USD $1.5 million in revenues annually for Eaton.


Prior to 2007, Eaton provided technical consulting services to China Guodian for Vickers valves on wind turbine systems that it imported for use on its wind farms. When China Guodian formed Guodian the following year to manufacture its own wind turbines, Guodian started operations with wind turbine technology purchased from Aerodyn Energiesysteme GmbH that specified competitive hydraulic power units. Uncomfortable with the local supply channel, Guodian decided to open up the power unit business for bids. The company engaged Eaton in
the bidding process, since it was already familiar and well satisfied with the quality and performance of Eaton’s Vickers valves.

Meanwhile, Eaton personnel helped modify the hydraulic circuit on the Aerodyn wind turbine technology in order to facilitate easier field installation and maintenance. The modification was made possible with Aeroquip MatchMate Plus hose and Global TTC crimp fittings for braking system functions.

Still, Eaton China personnel had their work cut out for them in order to stand out from other power unit providers at bay.


They put together a crossfunctional team with a solid commitment to being recognized not only as a component supplier, but also a power unit design house backed by a dedicated application engineering team. Eaton’s local production expertise and engineering support, application assistance, senior leadership support, and overall customer care were validated as the team worked through technical requirements, prototype builds, and product testing.


With each of its needs satisfied, Guodian made the decision to replace the original specified power units with Eaton hydraulic power units.

“This important new business with Guodian demonstrates Eaton’s capabilities as a major provider of wind power hydraulics and reinforces our position as the company that leading wind turbine manufacturers are turning to the most for hydraulics expertise,” said Eaton’s Shyam Kambeyanda, regional president—Hydraulics Asia Pacific.

“Eaton’s expansion in the wind power business is consistent with our commitment to renewable energy sources and the value we place on environmental sustainability.”