The crankshaft repair process has been simplified by RA Power Solutions with the minimum amount of engine downtime possible by the introduction of lightweight, compact onsite crankshaft polishing equipment. The engine block is used to insert the polishing and grinding machine, and the crankpin is polished. 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.

The failure of the crankpin or main journal bearing is common which damages the crankpin and main journal diameter of the crankshaft.

The following are the main observations in the case of the failure of the bearing:

1. Development of taper & ovality on crankpin & main journal diameter.
2. Dent, bearing line marks, and a rough surface are observed on the pin.
3. In a severe accident, heat causes the bearing material to stick to the crank pin or main journal diameter.
4. Overheating turns the crankpin black or blue and creates hard spots
5. The failure of the bearing also causes the development of cracks.

Specialization of RA Power Solutions in Crankshaft Machining, Grinding, and Polishing:

RA Power Solutions specializes in the machining of crankshafts without removing them from the engine block. Our highly trained technicians reach the accident site in the minimum possible time with portable equipment to undertake the repairs.

We have been extending crankshaft machining and onsite crankshaft repair services to leading shipping companies for more than four decades. Our success rate is almost 100 percent.

In extreme cases where damage is more than the last limit, the crankshaft is rejected. There are several occasions where RA Power Solutions have successfully repaired the crankshaft under deviations.

In this case, we have undertaken the crankpin machining beyond the undersize recommended by the manufacturer.

Our team of highly skilled engineers and technicians utilizes the latest technology. The equipment to deliver precise, reliable, and cost-effective onsite crankshaft machining and polishing services.

We understand the importance of minimal downtime for our clients. Our onsite services save you time and money by eliminating the need to transport heavy crankshafts to a workshop.

The matching bearings are also supplied by us. This initiative has saved several crankshafts from rejection.

Working on the most popular model of Engines

We undertake repair of all makes and models of diesel engines, compressors, pumps, and all types of rotary equipment. The most popular make & model of engines are Yanmar, Wartsila, Daihatsu, MAN B&W, Caterpillar, Deutz MWM & Allen Engine, etc.

We have been regularly executing the repairs in Argentina, Bahamas, Barbados, Bermuda, Bolivia, Brazil, Canada, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Guatemala, Guyana, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Malaysia, Nigeria, UAE, Togo, Spain, Madagascar, Singapore etc.

For more details on the crank pin grinding machine, Onsite Crankshaft Repair Services,  insitu machining equipment, and in situ crankshaft machining, please email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91 9582647131 or  +91 9810012383.

The post Onsite Crankshaft Repair, Grinding & Polishing | 45 Years of Experience appeared first on Crankshaft Grinding Machine.

We were approached by a shipping company based in Mumbai, India, to whom we have been extending on site crankshaft grinding and Onsite Crankshaft Repair services for the last 45 years.

They approached us about the problem in the crankshaft of the YANMAR Diesel Engine model 6N18AL-DV.

THE ENGINE DETAILS ARE AS FOLLOWING:-

ACTION TAKEN BY RA POWER SOLUTIONS FOR REPAIR OF CRANKSHAFT OF YANMAR DIESEL ENGINE 6N18AL-DV:-

• Two technicians with an onsite crankshaft grinding machine boarded the vessel, and the crankshaft was subject to inspection.
• All six crankpins were subject to calibration for taper and ovality.

THE DIMENSIONS WERE CHECKED AS PER RA POWER SOLUTIONS PROTOCOL, WHICH IS MENTIONED BELOW:-

STANDARD DIMENSION OF CRANK PIN – 145.00 MM

STANDARD /SPECIFIED NO.                                                                                        SIZES IN MM

                                                                             SIZE OF CR PINS

• We inspected the hardness of all crankpins. The readings ranged from 590 to 650 HB.
• We carried out an MPI test on the crank pins to detect cracks. The test showed no cracks.
• We checked the deflection of the crankshaft. The readings were within limits.

SUCCESSFUL REPAIR OF CRANKSHAFT OF YANMAR DIESEL ENGINE 6N18AL-DV:-

• We observed higher ovality ranging from 0.16 to 0.22 mm. Based on this, we decided to grind all the crank pins.
• We ground all the crankpins undersize by 0.40 mm as per the manufacturer’s recommendation. The final size ranged from 144.58 to 144.60 mm. We maintained a maximum ovality of 0.02 mm..

THE FINAL DIMENSIONS MAINTAINED AFTER GRINDING ARE MENTIONED BELOW:-

STANDARD DIMENSION – 145.00 MM

STANDARD /SPECIFIED NO.                                                                                        SIZES IN MM

                                                                             SIZE OF CR PINS

Precision Repair of Yanmar Diesel Engine Crankshafts

The small crankpin bearing width requires the latest crankshaft grinding equipment which is possessed by us and we have been executing successfully the repair of the crankshaft of YANMAR Diesel Engine 6N18AL-DV and other models having small bearing length all over the world.

In our 45 years of experience we have executed successfully repair of more than ten thousand Crankshafts.We strictly maintain all tolerances stipulated by the manufacturer.

We have been executing the repairs in Laos, Lebanon, Malaysia, Maldives, Mongolia, Nepal, North Korea, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Syria, United Arab Emirates, Yemen etc.

For more information on Onsite Crankshaft Repair, Yanmar Crankshaft Repair, onboard crankshaft repair, insitu machining equipment, crankpin journal repair, and ship crankshaft machining, contact us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91-9582647131 or +919810012383.

The post Onsite Crankshaft Repair of Yanmar Diesel Engine 6N18AL-DV | Machining of Crankshaft of Yanmar Engine appeared first on Crankshaft Grinding Machine.