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- October 27, 2025
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RA Power Solutions company based in New Delhi, India, undertakes crankshaft refurbishment onsite. There is no requirement for the disassembly and removal of the crankshaft from the engine block.
We specialise in on-site crankshaft refurbishment. We provide a cutting-edge and efficient solution to the challenges faced by industries in need of crankshaft repair.
Our well-experienced technicians travel to your site on land or onboard a vessel. They carry the required inspection instruments and onsite crankshaft grinding and polishing machines. They perform all necessary onsite repairs.
Following is the outline of the inspection and repair of the main engine crankshaft:
I)Inspection of Crankpin/Main Journal: You must thoroughly check the surface geometry of the crankpin or main journal. It including roundness defects, loss of alignment, conicity, barrel shape, surface finish, and other critical parameters.
RA Power Solutions has inspection formats, and all the observations of the surface geometry parameters as described above are recorded.
II) Polishing or undersizing journals and crankpin:
On the basis of surface geometry reports, the available decision is taken in regard to polishing or grinding of the crankpin and main journal. In the event of minor bearing line marks, pitting, or rough surface, it is recommended that these defects be removed only by the process of polishing of crankpin and main journal.
III) RA Power Solutions, the main engine crankshaft repair company uses the latest lightweight and easy-to-operate. ,The onsite crankshaft grinding and polishing machine, which improves the surface finish without under-sizing of crankpin/main journal diameter.
IV) Our well-experienced technicians can travel to your site, on land or onboard a vessel, with the required inspection instruments and onsite crankshaft grinding and polishing machines. They carry out all necessary onsite repairs.
If the surface geometry does not meet the limits specified in the engine manufacturer’s manual and exceeds the tolerance, we recommend undersizing the journals or crankpins.
V) We recommend repairing the engine crankshaft when it has severe damage. In such cases, we recondition the journal or crankpin by grinding it to the next undersize, depending on the availability of undersize bearings.
RA Power Solutions uses a high-precision onsite crankshaft grinding machine to undersize crankpins and strictly maintains tolerance as per the manufacturer’s specifications. The team regrinds crankshafts of large diesel engines up to 700 mm in diameter.
We specialize in under-size and special-size bearings
Our experienced technicians provide complete emergency crankshaft repair services, and we are fully equipped to support them. They hold valid Indian CDC documents and can travel worldwide on short notice. The job of crankshaft refurbishment and emergency crankshaft repair is possible even while sailing the vessel.
For any queries on onsite crankshaft refurbishment, repair of main engine crankshaft, crankshaft inspection onsite, and grinding & repair of damaged crankpin on board a vessel, please drop us an email at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
FAQs:
It is the process of inspecting, grinding or polishing, and repairing a crankshaft directly at the engine location, without removing the crankshaft from the engine block.
Yes, we handle main journals and crankpins up to 700 mm diameter using portable grinding machines.
Absolutely, we conduct crack detection (MPI), surface geometry checks, hardness testing, and other inspections before deciding on polishing or grinding.
Minor bearing line-marks and surface roughness (by polishing), or more severe wear, ovality, taper or journal damage (by grinding/undersizing + matching bearings).
Onsite repair eliminates crankshaft removal and transport, reduces downtime and cost, enables quick turnaround, and ensures bearings and engine components can go back into service sooner.