In Place Machining of Damaged Intermediate Shaft Journal

In place Machining of damaged intermediate shaft journal was executed successfully by RA Power Solutions at Kochi Port, India.

Details of Intermediate Shaft Repair

• Team of three technicians boarded the Vessel with the onsite grinding and polishing equipment.
• On inspection the Intermediate Propeller Shaft bearing sitting diameter was found damaged with surface cracks, higher hardness, and ovality of 0.38MM.
• The bearing was found burnt and white metal removed, this bearing was immediately packed and sent to our factory for White Metal Rebabbitting to save the time.
• Machining, Grinding and Polishing of Intermediate Shaft Journal was undertaken, and diameter was reduced by 1.00MM, the final diameter of Intermediate Shaft Journal was maintained as 504.00 MM with the tolerance of only 0.02 MM and surface finish of less than 15 Ra value.
• The bearing after rebabbitting was machined, in the RA Power Solutions factory maintaining the bore size of 504.50 MM, as per the manual.
• Bearing was assembled, Blue matching was done and after checking of Oil-gap and all other major parameters the trials were taken and performance was found satisfactory.