Cummins Crankshaft Repair of QSK60-G4

Cummins QSK60-G4 DG Set Engine Nameplate

Cummins engine crankshaft of QSK60-G4 was damaged of a diesel generating set installed in a power plant on one of the islands in the Maldives.

The Cummins QSK60-G4 is a high-RPM engine with a compact design. The officials at the diesel power plant were informed about the damage to one of the crankpins.

The details are as follows:

Cummins QSK60-G4 Diesel Generator Crankshaft Under Inspection

In order to execute onsite grinding of the damaged crankpin having a standard diameter of 120.65 mm, RA Power Solutions developed special tooling that is compact and capable of grinding the crankpin and main journal of the crankshaft. Two technicians, equipped with a compact, lightweight, dedicated crankshaft grinding machine, visited Addu City, Hithadhoo Island, Maldives.

Damaged Crankpin of  Cummins QSK60-G4 Diesel Generator Set	Crankpin Surface with Deep Scoring Lines – Cummins QSK60-G4 DG Set Crankshaft

The following job was carried out:

i) The complete inspection of damaged crankpin number 3 was undertaken to assess the damage. The minimum and maximum sizes observed are as follows: 

• Maximum Diameter – 120.65 mm
• Minimum Diameter – 120.09 mm

The above shows an ovality of 0.56 mm, which is considered to be very high.

MPI Test on Crankpin of Cummins QSK60-G4 Diesel Generator Engine Crankshaft	Crankshaft Inspection Using MPI of Cummins QSK60-G4 Diesel Generator Set

ii) The damaged crankpin number 3 was also subjected to MPI and hardness testing. Minor hairline marks were observed. The hardness observed was also on the higher side at a few scattered spots.

iii) The grinding of crankpin number 3 was undertaken using our specialized onsite crankshaft grinding equipment, and a final size of 119.63 mm was maintained.

Crankshaft Hardness Measurement of Cummins QSK60-G4 Diesel Generator Set

RA Power Solutions can undertake onsite grinding of crankshafts having diameters as small as 80 mm. We can extend these services all over the world.

Bringing Your Cummins QSK60-G4 Crankshaft Back to Life | Fast & Reliable

The successful repair of the Cummins QSK60-G4 crankshaft shows how important it is to have specialists in situ machining for high-performance engines that work in distant places like island-based power plants. Cummins engines are recognized for being tough and well-made, but when they are damaged, such as when the crankpin is oval or the surface has flaws, they need help from experts with high-tech tools. RA Power Solutions made sure the crankshaft was put back in good operating order without taking the engine apart. This saved the client a lot of time and money.

Repaired Crankpin Surface After Grinding of Cummins QSK60-G4 Diesel Generator Set

Wherever Your Engine Is, You Can Trust Cummins Crankshaft Repair Solutions

RA Power Solutions has been fixing Cummins crankshafts for decades and has developed tried-and-true methods for grinding, inspecting, and restoring important engine parts on-site. Our staff provides reliable and affordable solutions around the world for Cummins diesel generators, marine engines, and heavy-duty equipment. Fixing the Cummins QSK60-G4 crankshaft in the Maldives demonstrates our skill, quick response, and dedication to keeping engines running well even in the toughest conditions.

For more information regarding crankshaft grinding services, please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.