Bearing load in aerospace engineering: Precision and load capacity of bearings

In aerospace engineering, the bearing load is a decisive parameter in the design of rotating assemblies. High speeds, dynamic loads, and temperature fluctuations place extreme demands on manufacturing precision, material quality, and correct bearing dimensioning.

Proper load analysis directly affects rotor stability, vibration levels, and overall operational reliability.

Nature of loads in the aerospace industry

The load on bearings in aircraft engines is of a combined nature.

Radial load

Radial load acts perpendicular to the axis of rotation. It is caused by centrifugal force and the weight of rotating parts. It affects the stability of operation and the distribution of tensions in the orbits.

Axial load

Axial load acts parallel to the axis of rotation. These are longitudinal forces that determine the exact position of the shaft. Incorrect balancing can lead to local overload and reduced service life.

Comparing radial vs. axial load is a key factor in design, as these forces affect the resulting bearing load in practice.

Bearing requirements

Aerospace applications require:

• high manufacturing precision,
• materials with high fatigue strength,
• stability at extreme speeds,
• consistent production quality.

Ball bearings enable operation at high speeds and transmit combined loads. Roller bearings provide a higher load capacity in the radial direction and high mounting rigidity.

AKE focuses on the production of roller and ball bearings with an emphasis on precision, material quality, and the stability of production processes, which is crucial in applications with high reliability requirements.

In aerospace engineering, correctly determining the bearing load is fundamental to safe design. A precise understanding of the difference between radial load and axial load, as well as their combined effect (radial vs. axial load), allows for the optimization of bearing assemblies for extreme operating conditions.

Reliable ball and roller bearings are therefore a key component in rotating systems where safety and stability are an absolute priority.