Kreuzponsatzverhalten

Kreuzponsatzverhalten refers to a phenomenon observed in certain mechanical systems, particularly those involving gears or mating parts. It describes the tendency of a component, such as a gear tooth or a bearing surface, to exhibit wear or damage that is not uniform across its entire surface. Instead, the damage concentrates in a specific cross-shaped pattern, often referred to as a "cross" or "ponsatz."

This specific wear pattern is typically associated with conditions of mixed lubrication, where the surfaces are not fully separated by a hydrodynamic film, but also not in direct metal-to-metal contact. Instead, there is intermittent contact, often under high load. The cross-shaped pattern is thought to arise from the interplay of sliding and rolling motions, combined with the presence of abrasive particles or surface imperfections.

The formation of Kreuzponsatzverhalten can be influenced by factors such as material properties, surface finish, lubricant viscosity and additives, and the operating loads and speeds. Identifying and understanding this wear mode is crucial for diagnosing equipment failures, predicting remaining component life, and implementing effective maintenance strategies. Addressing the root causes, such as improving lubrication, reducing surface roughness, or modifying operating conditions, can help prevent or mitigate this type of damage.