Introduction to the gearbox bearing failure and countermeasures

November 22, 2024

Gearbox is one of the core components of wind turbine drive system, its normal operation for wind turbine to reduce the failure rate, reduce downtime, improve power generation plays a vital role, and bearing as an important component of wind power gearbox, its role is not to be ignored. In the regular operation process, the bearing will appear a variety of failure modes, and causes bearing failure is also a variety of reasons. In this issue, I will share with you the failure mode of bearings and countermeasures.

Bearing Failure Modes

1. Rolling fatigue contact: fatigue is clearly manifested in the organization (microstructure) changes and material spalling from the surface (macrostructure).

2. Wear and tear: In the course of use, two sliding or rolling/sliding contact surfaces interact with each other, resulting in continuous loss of material.

3. corrosion: corrosion is the result of a chemical reaction on the surface of the metal

4. galvanic corrosion: is due to damage to the passage of electric current caused by the contact surface of the local microstructural changes and loss of material removal

5. plastic deformation: permanent deformation that occurs when the stress exceeds the yield strength of the material

6. Cracking: when the local stress exceeds the limit of the tensile strength of the material, cracks occur and expand

The solution of bearing failure

In reality, the vast majority of bearing damage is caused by a major cause. However, limited by objective reasons such as harsh inspection conditions, lack of inspection means and inexperienced inspectors, we always find out when the bearing is already seriously damaged. This also causes the increase of maintenance cost. As a senior wind power gearbox manufacturer, Venable Pole has always adhered to the highest standards in bearing calculation, selection, use and maintenance. We have unique insights and response programs in bearing design selection, installation process, on-site inspection and replacement maintenance. We can help end-users to realize the imminent needs of on-site maintenance and replacement of bearings, as well as improvement of bearing service life.

Author:

Ms. Davina

E-mail:

davina@bochequipment.com

Phone/WhatsApp:

+852 59360273