RA Power Solutions is a pioneering name in the realm of onsite machining services. With a commitment to precision and excellence, they offer a comprehensive suite of solutions aimed at addressing complex machining challenges without the need for equipment dismantling.

RA Power Solutions undertakes complete reconditioning of the crankshaft of marine engines, diesel generating sets, compressors, forging hammers, and all other applications. The crankshaft repair is undertaken onsite without removing the crankshaft from the crank casing. This saves the downtime of the equipment and the cost of assembly of the engine after the crankshaft repairs are executed. Companies are opting for on-site repair of the crankshaft, and sending the crankshaft to the workshop for repair is outdated. 

The following procedure is adopted by our experienced engineers for calibration:

Before starting the repair of the crankshaft, crank pin, and main journals is subject to the following inspection:

1. Crankpin and main journal are measured for the presence of taper and ovality.
2. The alignment of the crankshaft is checked by deflection.
3. Radius fillets and lubricating oil holes are inspected for their original profile.
4. Inspection of hardness
5. Crack detection by MPI/Ultrasound and dye penetrant test.
6. Checking of surface finish
7. Visual inspection of the counterweight and counterweight bolts. In case of an accident, crack detection by MPI is recommended.

Based on the above observations, the crankshaft is repaired onsite, maintaining the following parameters:

1. The grinding of the crankpin and the main journal is undertaken as per the undersize recommended by the manufacturers and the availability of the bearings with the engine manufacturers.
2. Preparation of radius fillet, lubricating oil hole, and maintenance of profile as the original.
3. Polishing the crank pin and main journal, maintaining the surface finish as per international standards.
4. Checking of hardness and crack detection test after repairs are executed.

We have a team of experienced technicians and the necessary instrumentation to undertake the repair of the crankshaft on board a vessel, even while sailing or for stationary engines.

All the crankshaft repairs, onsite crankshaft inspection, and onsite machining services undertaken by RA Power Solutions are guaranteed to provide satisfactory performance.

We also have engine crankpin bearings available in our stock for various engine models from Wärtsilä, MAN B&W, Sulzer, Yanmar, Daihatsu, MAK, Caterpillar, Cummins, Deutz, Mitsubishi, Allen, Himsen, and Niigata.

For any queries regarding crankshaft grinding for industrial and marine applications, crankshaft regrinding and compressor large engine, crank grinding, main journal crankshaft grinding, crankshaft grinding machine manufacturer, on-site grinding, onsite machining, onsite crankshaft grinding, onsite crankshaft inspection, and onsite machining services, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131,+91 9810012383.

FAQs

1. What does crankshaft reconditioning mean?

Crankshaft reconditioning is the process of restoring worn or damaged crankpins and main journals by inspection, grinding, polishing, and dimensional correction so that the crankshaft can be reused.

2. Is it possible to recondition the crankpin without removing the crankshaft?

Yes. Onsite reconditioning of crankpins can be carried out directly on the engine using portable grinding equipment, eliminating the need to remove and transport the entire crankshaft.

3. What crankshaft defects are correctable by onsite grinding?

Besides the other dimensions of the journal, the condition of the journal will dictate whether onsite grinding can correct for wear, scoring, taper, ovality, and surface damage on crankpins and main journals.

4. What is the procedure for inspection of a crankshaft before reconditioning?

Before machining, the crankshaft is inspected for taper, ovality, deflection, hardness, surface finish, radius fillet condition, oil holes, and cracks using suitable measuring and crack-detection equipment.

5. Why is it better to recondition the crankshaft on site rather than in the workshop?

Reconditioning on site eliminates the need to remove and transport a large crankshaft. It can reduce equipment downtime, minimize dismantling and reassembly work, and allow repairs to be completed at the vessel or plant itself.