The crankshaft is the heart of the engine and is the most important/expensive component. You must periodically inspect and polish the crankpin and main journals of the crankshaft. Regular polishing increases bearing life and protects the crankshaft from damage when done correctly.

The oil film between the crankpin/main journal and bearings is too thin while the engine is in operation. In case the main journal and crankpin have roughness, burr, pitting, and line marks, it can result in the discontinuation of the oil film and failure of the bearing, causing damage to the crankshaft.

For the last four decades, RA Power Solutions has worked on crankshafts of marine engines and observed that many engineers use non-conventional methods to polish main journals and crank-pin journals just to put the engine back into operation.

The non-conventional methods used are as follows:

I) Polishing of crankpin journal and main journal by Jute rope.
II) Polishing of crankpin journal and main journal by various grinding and polishing mediums.

We observed that following these unconventional and nontechnical processes for polishing the crankshaft does not remove the line marks or the various other abnormalities that do develop. In some cases, since this process has no control, excessive taper and ovality are created, resulting in the failure of the bearing and crankshaft.   

Crankpin and Main Journal Polishing Made Easy:

RA Power Solutions, by introducing a lightweight, compact onsite crankshaft polishing machine, has made the crankshaft repair process simple with minimum downtime of the engine. The polishing and grinding machine is inserted from the engine block, and a polishing crankpin is undertaken. The onsite crankshaft grinding and polishing machine is capable of maintaining a surface finish better than the international standards, i.e. 0.2 RA value.

When Should You Opt For Polishing / Grinding?

RA Power Solutions strongly suggest that the polishing of the crankpin should be undertaken periodically as a routine maintenance process. This will not only extend the life of the bearings but also save the crankshaft from any major breakdown.

We offer two options to our clients either they can call our technicians who will visit their site with the portable on-site Crankshaft polishing equipment and undertake the polishing of the crankshaft. Alternatively, we also manufacture onsite crankshaft polishing machines which are simple to operate. More than 70 onsite crankshaft grinding and polishing machines have been sold all over the world.

RA Power Solutions offers a cutting-edge crankshaft polisher machine that revolutionises the process of crankshaft polishing. The crankshaft polisher machine is designed to enhance the crankshaft’s performance, durability, and overall efficiency, ultimately optimising the engine’s performance.

Our commitment to quality and innovation makes our crankshaft polisher machine a go-to solution for clients seeking top-notch results. Trust in RA Power Solutions to deliver excellence in crankshaft polishing, meeting the highest industry standards and exceeding customer expectations.

For any queries about crankshaft journal polishing, main journal grinding, onsite crankshaft polishing services, crankshaft journal machining, and Crankshaft Polisher machine, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

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