Understanding how many bearings to purchase and the advantages of duplex bearings is important when performing repairs on wind turbine gearboxes. This article introduces the benefits of duplex bearings while being focused on helping identify the correct quantity of bearings needed and understanding the contents and labeling of the bearings found inside the crate.

What is heathcote slip and what can it lead to in Main Shaft Bearings?

DLC is failing. Once used as an upgrade on most main bearing applications the limits of this coating technology are being found leading to accelerated failures of rollers.

Peeling damage is one of the most common main bearing failures. What is it and what can do you do to control it?

Super Tough bearings have track record of improving bearing life in the toughest application. What is it exactly that makes these bearings so much different than their traditional through hard and case carburized counterparts?

Brinelling occurs mainly from excessive loading or impacts. False brinelling however while similar has different underlying causes and symptoms.

What causes ring cracking in blade bearings, and how to solve it.

Outer ring cracks on blade bearings of a WTG can lead to loss of a blade. It’s critical to identify early and shutdown the turbine to plan for replacement.

Electrical discharge is common in wind turbine generator bearings.

What causes White Etching Cracking and how to solve it.

Root cause of cage failures in Blade Bearings.

What is black oxide coating and how can it help improve the life of WTG gearbox bearings?

Overview of the construction and application loading of the 2-row 4-point contact slewing bearing used as blade bearings in Wind.

There are several components in the pitch system. All of these components can contribute to common pitch system faults like Blade Angle Asymmetry.

Standard bearings are through hardened, but upgrading to a case hardened bearing has a lot of benefits in demanding applications. Read more about the difference between these bearing types.

Internal clearance of bearings and why it’s needed

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.