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2025This project covered the rebabbitting of DE and NDE bearings for a 22 MW generator rotor as part of bearing refurbishment and performance restoration work. The scope included receiving inspection, cleaning, removal of old babbitt material, surface tinning, babbitt layer application using TIG welding in accordance with WPS, machining, final inspection, packaging, delivery, and onsite supervision during installation. The work was carried out to restore bearing condition, dimensional accuracy, and service reliability.
Scope of Work
- Receiving and inventory all parts
- Perform cleaning part by chemical as necessary
- Perform as received inspection to all parts, including:
- Visual inspection
- Dimensional inspection
- NDT inspection
- Remove old babbitt until base metal is clean
- Apply material tinning to surface where the babbitt bonds
- Apply babbitt layer to the base material with TIG welding method as per WPS
- Perform rough machining process
- Perform machining of oil inlet, oil jacking, and polishing as necessary
- Perform final machining process to target size
- Perform final inspection, including: Visual inspection, Dimensional inspection, NDT inspection
- Packaging
- Delivery all parts
- Supervision for bearing installation onsite
- Provide final inspection report
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