Crankpin Polishing of Wartsila 6R32D and Saving of Crankshaft from Damage

RA Power Solutions Pvt. Ltd. was approached by one of our client based in Singapore regarding failure of two number bearings of crankpin of Wartsila auxiliary engine.

Details are as follows:-

We deputed technicians who immediately on boarding the vessel undertook the inspection of all six crankpins for following parameters:-

• Crankpins were subject to MPI for crack detection, no cracks were observed.
• Hardness test of crankpins was conducted and was observed within limits.

Dimensional inspection of six crankpins was conducted and readings are mentioned below:-

• Ongoing through the above, one can observe that the crankpin have the ovality of only 0.02 mm which is well within the limits.
• On visual inspection of crankpin following observations were made:-

a)      Crankpin Number 1, 2, 3 and 6 had bearing line marks and rough surface.

b)      In case of Crankpin Number 4 & 5, dent marks were observed on bearing working area.

c)      Based on the above observations, it was decided to undertake the polishing of all the crankpins.

The time available was short and it was a challenge for the RA Power Solutions Pvt. Ltd. technicians to undertake the polishing of all six crankpins of Wartsila 6R32D having standard diameter of 270 mm in only 10 hours. The team worked non-stop and executed successfully the polishing of all six crankpins removing the line marks, burrs and improve the surface finish to less than 15 microinch in terms of RA value.

RA Power Solutions Pvt. Ltd. having experience of more than four decades strictly believes that the engine breakdown, failure of bearings and damage to the crankshaft can be avoided in case crankpins are polished periodically or at the time of replacement of bearing.

Gone are the days when few European companies had the monopoly in the business of offering crankshaft polishing and crankshaft grinding services. They used to charge exorbitant amount which ship owners use to pay as they had no other option.

Crankpin of Wartsila 6R32D after Polishing

 With the introduction of onsite crankshaft grinding machine by RA Power Solutions, the polishing of crankshaft has been made simple, easy and the most important fact is that the cost of polishing charged by RA Power Solutions is negligible.

Crankpin Polishing of Wartsila 6R32D

This blog is written by Mr. Raj Shahani (Managing Director of RA Power Solutions). He has forty years of experience in the field of engine repair and is a technical adviser to various shipping and heavy industries based all over the world.

Crankpin After Polishing

For any of your requirement of crankshaft inspection, crankshaft polishing and crankpin polishing, please email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Visit our website: https://www.crankshaftgrindingrepair.com/