How to remove the rear bearing of a wind turbine generator

What is a main bearing for a wind turbine?

the Creative Commons Attribution 4.0 License. This paper presents a review of existing theory and practice relating to main bearings for wind turbines. The main bearing performs the critical role of supporting the turbine rotor, with replacements typically requiring its complete removal.

Do large-sized wind turbine generators need larger rolling bearings?

Recently the development of large-sized wind turbine generators having a power capacity of 3 MW or more and a blade diameter of 100 meters or more is advancing, requiring the use of larger rolling bearings. 1. Introduction

How to lubricate a wind turbine generator bearing?

To lubricate the bearings (DE & NDE) of a wind turbine generator, refer to your 'specific installation and maintenance manual' for more information. Do not lubricate the bearings while the machine is not rotating, whether using a centralized lubrication system or a manual pump.

Why do wind turbine generator bearings fail?

Misalignment between the gear box shaft and the generator shaft is a common cause of premature bearing failure in wind turbine generators. Such misalignment may generate excessive vibration and creates unacceptable stress for the bearings.

How do you protect wind turbine bearings from corrosion?

Corrosion protection can be achieved with the application of a specialized corrosion-inhibiting coating, especially appealing for turbines in harsh offshore environments. Wind-turbine bearings must endure widely varying temperatures, speeds, and loads, plus exposure to contaminants, including moisture and chemicals.

What type of bearing does a geared turbine use?

Geared turbines. Geared turbines which have either a SMB or DMB setup have historically most commonly used a locating DSRB for the rotor-side bearing, along with a SRB, CRB or DTRB as the generator-side bearing (Yagi, 2004).