Could Precision Miniature Bearings Help Reduce Aircraft Maintenance Costs?

Could Precision Miniature Bearings Help Reduce Aircraft Maintenance Costs?

15 per cent of airlines in the US have experienced rising maintenance costs, reports McKinsey & Company. With maintenance, attention is often drawn to larger aerospace components that are most visible like the engines, turbines and the sheer scale of these machines. Yet behind every major system lies an unseen infrastructure, where the smallest components carry the greatest responsibility — including industrial bearings.

One is ageing aircraft. Older craft require more frequent and complex maintenance, which puts greater pressure on Maintenance. Yet, at the same time, airline maintenance performance has worsened across several key operational metrics.

According to specialist, technical dispatch reliability has declined substantially — by as much as 50 per cent in some cases, reducing the likelihood that aircraft are ready for scheduled departures. At the same time, maintenance-related delays have increased significantly, in some cases occurring two to three times more frequently than before.

Nevertheless, the costs of deteriorated performance are severe and far-reaching — including lost revenue and higher compensation costs. Maintenance delays put extra strain on aircraft components, as well as on the maintenance teams.

It’s clear that an improved approach to maintenance planning is needed. More effective aircraft maintenance means reducing time spent on administrative tasks, freeing experienced workers to perform actual maintenance activities, as well as training and supervision. Predictive maintenance, too, encourages more accurate forward planning to avoid delays.

AI-based technical support, for example, can free human workers to instead focus on practical maintenance tasks. But successfully integrating AI has its own challenges. AI systems can be expensive and less compatible with older aircraft. AI language models and predictive systems rely on freely accessible, relevant and high-quality data, so compatibility with modern Industry 4.0 systems is a must.

Fortunately, this is where Industry 4.0 sensors can play a significant role, particularly when external sensors are positioned adjacent to precision miniature bearings to capture signals generated within surrounding rotating assemblies.

Aircraft components operate under intense speeds and stress, which is why bearings used with these systems must be durable. To this end, ceramic bearings can handle high temperatures, corrosion and high speeds while still being lightweight. Stainless steel bearings, on the other hand, provide good fatigue strength and hardness as well as corrosion resistance. When choosing bearings, material selection is guided by the specific demands placed on each component and application within the aircraft — large or small.

By focusing on often overlooked aircraft components and leveraging advances in AI, precision miniature bearings — despite their small size — can deliver significant impact. These components play a critical role within condition-monitoring systems that generate the data used for predictive maintenance, helping reduce pressure operations and address one of the industry’s most complex challenges: rising maintenance costs.