Electrical discharge in generator bearings.
Electrical discharge is common in wind turbine generator bearings.
Special Bearing Used in GE Pitch Motors
The OEM uses a 6206 with special grease, high temp seals, and high heat stabilized rings. This special bearing has also been upgraded to include ceramic balls.
Relevant Published Articles
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Malloy Wind Company Profile
History of Malloy Electric and our support of the Wind market.
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Cracking Blade Bearings
What causes blade bearing cracks and where to find them before it’s too late.
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White Structure Flaking in Rolling Bearings for Wind Turbine Gearboxes
An investigation into the failure modes yielding white structure flaking and axial cracking in wind turbine gearbox rolling bearings
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Blade Bearing Cage Failure
Cage failure of blade bearings at 5 years or less.