Rotor Shaft Machining

As part of a project conducted at a hydroelectric site, an intervention was carried out on the rotor shaft of a generating unit. The objective was to restore a functional surface through a series of coordinated operations, including machining, material build-up, and finishing.

The operation followed several key stages:

• Initial machining of the affected bearing surface, to prepare it for corrective treatment.

• Copper build-up, performed by the client, to locally restore material on the functional zone.

• Final finishing machining, to achieve the required dimensions and tolerances, with precision adapted to the interface specifications.

The operations were performed using an orbital machining system mounted on a dedicated support, with alignment carried out using a laser tracker to ensure precise positioning relative to the shaft axis. The entire intervention took place in a secured environment, with specific arrangements to ensure equipment stability and operator safety.

This type of service illustrates our ability to carry out geometric rehabilitation operations under real-world conditions, meeting high technical standards and contributing to the reliability of critical hydromechanical components.