Slewing bearings for large-scale wind turbine generator system (WTGS) are critical
components to achieve optimum aerodynamic power capture by adjusting the nacelle and …

This paper presents a review of literature concerned with the vibration modelling of rolling
element bearings that have localised and extended defects. An overview is provided of …

Performances and working life of angular contact ball bearings (ACBB) are determined by
their internal load distribution and stiffness. To obtain accurate calculation results of the load …

For the past several decades, significant efforts have been devoted to modeling and
analysis of rolling-element bearings to aid in their design and application. This paper …

Pitch bearings in wind turbines are affected by reciprocating motion due to pitch control. The
combination of oscillating operation, high loads, and mixed lubrication often leads to wear …

In complex marine environments, pitch bearings are more prone to crack initiation,
propagation, and evolution, which leads to contact fatigue problems. Accurately identifying …

Finite-element analysis is the only means to determine the load situation of slewing bearings
with complex interfaces. For reliable results, the finite-element model needs to be validated …

Four-contact-point ball bearing (FCPBB), with a special double half inner ring structure,
presents dynamic multi-point contact characteristics in service. The dynamic contact feature …

In previous publication, the authors developed a theoretical model to evaluate the static load
capacity of four contact point slewing bearings. The method culminated in the formulation of …

We tested two types of ball bearings with an outer diameter of 750 mm to learn more about
the challenges of oscillating motions for pitch bearings. The experimental conditions are …