Aft stern tube bearing rebabbitting & machining
Stern tube bearing remetalling
During a special dry-docking, the owners of the Charles Eddie, a 305,178 DWT crude oil tanker, found white metal material squeezed from the aft stern tube bearing. Recognizing the severity of the issue and the requirement for a highly specialized repair, the customer contacted Goltens to provide alignment checks and rebabbitting of the 790mm diameter x 1,710mm stern tube.
Goltens, a pioneer in the field developing proprietary centrifugal casting machinery to meet the highest tolerances and quickly repair and recondition bearings , responded immediately to address the vessel’s pressing schedule.
Centrifugal casting of stern tube bearing
PROJECT FACTS
| M/V Charles Eddie | |
|---|---|
| Tonnage: | 305,178 DWT |
| Main Engine: | MAN B&W 7S80MC |
| Output: | Mcr: 25,485KW |
| Bearing Diameter: | Ø790.00mm |
| Bearing Length: | 1,710.00mm |
WORK SCOPE
- Performed laser alignment check of the shaft line onboard the vessel
- Incoming inspection of AFT stern tube bearing in the workshop
- Removal of white metal from bearing shell
- Rebabbitting the AFT stern tube bearing
- Finish machining white metal bearing surface to final diameter according to specification at workshop
- Measuring the final size and complete inspection by UT and dye checking at workshop (witnessed by LR Class surveyor and ship owner)
- Laser alignment check of stern tube bearing when reinstalled onboard the vessel
RESULTS
Goltens workshop completed the rebabbitting service within 5 days including coordinating with shipyard and Class society in order to meet the vessel’s urgent schedule.
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