Cylinder Issues
Half moon abnormal wear
Half‑moon abnormal wear is a recurring wear pattern that indicates the load is not being carried as intended at the interface. It may start as a visual observation during inspection but can develop into reduced stability and increased maintenance need. Over time, this can affect pitch behaviour and contribute to lost wind energy.
Understanding the Problem
What does a half‑moon wear pattern indicate?
A half‑moon wear pattern typically points to uneven contact or load distribution in a connection point within the cylinder assembly. When surfaces do not share load as intended, wear concentrates in a limited area rather than being distributed evenly. The key risk is not the mark itself, but the pattern repeating and gradually influencing long‑term component behaviour.
Typical symptoms
Half‑moon shaped wear marks observed during inspection
A distinct wear pattern appears repeatedly in the same area of the interface surface.
Localised surface wear in one contact zone
Wear is concentrated rather than evenly distributed across the expected contact area.
Solution
New design
A new design addresses recurring wear patterns by improving how the interface carries load. It helps reduce repeated abnormal wear and supports more stable long‑term behaviour. The intent is durability and predictable operation over repeated service cycles.
