We have developed a revolutionized tooling which has the capabilities to execute the repairs to close tolerances as stipulated in the engine manufacturer’s manual.

Case Study of Repair of MAK-1 8CM32C Engine Crankshaft In Burkina Faso, West Africa

The major details of the crankshaft of the MAK-1 8CM32C Engine are as follows:

i) Due to the repeated failure of bearings, it was decided by the client to get an audit of the crankshaft for all the major parameters. RA Power Solutions deputed two (2) technicians along with the onsite crankshaft grinding machine from New Delhi to Burkina Faso. During the initial inspection, the following was checked and observed.

a) The dimensional inspection of the crankpins was conducted, and excessive ovality was observed in all the crankpins. The readings for all the crankpins are pasted below:

b) As protocol, all the crankpins were checked for hardness by a portable hardness tester and were found within limits.

c) MPI was also undertaken to check the cracks, and no abnormality was observed.

ii) The grinding of all the eight (8) crankpins was executed onsite by our technicians. The first step size and tolerance of 0.02/0.03 MM were maintained.

In Place Machining of Crankshaft of MAK-1 8CM32C Engine

RA Power Solutions has been successfully executing the repair of high-diameter crankshafts up to 700 mm. We also specialize in onsite grinding of small-diameter crankpins with a bearing width of the crankpin as low as 50 mm to execute onsite such types of complex crankshaft repairs onsite. We have developed special-purpose onsite crankshaft machining equipment by which the repairs can be executed. We execute repairs for Marine, industrial, stationary power, and offshore sectors all over the world.

Our technicians are available to travel worldwide on short notice. Additionally, several of our technicians hold valid US visas, enabling them to travel to South America, the Caribbean, and other destinations as needed.

At RA Power Solutions, we provide specialized crankshaft grinding machines, onsite crankshaft grinding repair, insitu crankshaft grinding, Onsite crankshaft grinding machines,  insitu crankshaft grinding machines, crankpin bearings, metal stitching, metal locking, engine block repair, crack repair by metal stitching, cast iron crack repair, crankpin polishing, inspection of crankshaft, crankshaft inspection, rebabbitting bearing, babbitt white metal, engine overhauling, grinding of crankpin, connecting rod, and turbine shaft bearing services worldwide, including South Africa, Singapore, Greece, Dubai, Iraq, Iran, Malaysia, Colombia, and Brazil.

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.

The post In Place Crankshaft Machining and Grinding of MAK-1 8CM32C Engine In Burkina Faso , West Africa appeared first on Crankshaft Grinding Repair.

Damaged Crankpin of Daihatsu 6DK-20	Daihatsu 6DK-20 Crankpin Before Grinding

On the visual inspection, the crankpin number #05 was observed to be damaged, and on the dimensional inspection, an ovality of 0.46 mm was observed. The readings are provided below:

Crack Detection through MPI	Crankshaft Inspection of Daihatsu 6DK-20

After the pre-inspection of crankpin number 05 of the Daihatsu 6DK-20, as per the protocol, which included dimensional inspection, hardness testing, and Magnetic Particle Inspection (MPI) for crack detection, grinding was initiated, since all parameters were found to be within acceptable limits. The Crankpin Number #05 was undersized by 1.50 MM.

Final dimensions are provided below:

We have to reduce the diameter by 1.5 mm due to deep bearing line marks.

In situ crankshaft grinding of Daihatsu 6DK-20 engine	Daihatsu 6DK-20 Engine Machining Onsite

Insitu Crankshaft Grinding and Polishing of Daihatsu 6DK-20	Crankshaft Repairs Under process

Supply Of Undersized Bearings For Daihatsu 6DK-20

Our technicians carried with them two (2) pairs each of 1.00 mm and 1.50 mm undersized crankpin bearings. The 1.50 mm bearings were fitted, and the engine was put back into operation within a few hours after the crankshaft repair of the Daihatsu 6DK-20 was executed. We maintain a large stock of crankpin bearings for the Daihatsu 6DK-20, as well as for other popular engine makes and models.

After Grinding Crankpin of Daihatsu 6DK-20 engine	Crankpin after Grinding and polishing Daihatsu 6DK-20 engine

RA Power Solutions, with experience of more than 45 years, extends onsite crankshaft grinding services to leading shipping companies, power plants, and heavy industries all over the world.

We have a team of trained technicians available 24/7 and can be deputed on short notice. Some of our technicians also have valid US VISA and can fly to South America, Caribbean countries, etc.

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

The post Daihatsu 6DK-20 Onsite Crankshaft Grinding appeared first on Crankshaft Grinding Repair.

We recently completed a successful onsite repair of a BERGEN B32:40L8P engine crankshaft onboard a vessel in Jamaica.

The details of the job are as follows:

Onsite Inspection of Crankshaft – BERGEN B32:40L8P

• Two of our experienced technicians, along with our portable onsite crankshaft grinding equipment, traveled from New Delhi, India, to Jamaica.
• Our equipment is lightweight, compact, and portable, allowing it to be transported as accompanied baggage, which eliminates delays associated with cargo shipment and customs clearance.
• Upon boarding, the vessel was found fully loaded with containers, yet our team immediately initiated the crankshaft inspection.
• It was observed that Crankpin No. 5 had suffered severe damage due to a bearing failure.
• The crankpin was thoroughly cleaned, and embedded bearing material was carefully removed.
• Dimensional checks revealed:
  • Minimum Diameter: 269.75 mm
  • Maximum Diameter: 270.00 mm
  • Ovality: 0.25 mm
  • Deep scoring marks were also noted due to the bearing failure.
• A Magnetic Particle Inspection (MPI) using a high-intensity Magnaflux torch was conducted to check for cracks. No cracks or abnormalities were detected.
• Hardness testing was performed, and confirmed that values remained within permissible limits.

Onsite Grinding of BERGEN Crankpin

• The crankpin was calibrated and ground in multiple stages, with ovality strictly controlled during the process.
• Due to deep scoring, the crankpin had to be ground to an undersize of 2 mm.
• The final dimension achieved was 268.00 mm – 0.02 mm, ensuring precision and compliance with engine requirements.

Engine Commissioning

• The vessel had a 2 mm undersize bearing in stock, which was installed immediately after grinding.
• A trial run of the engine was conducted in the presence of our technicians, and performance was found to be fully satisfactory.

About RA Power Solutions

We are a global leader in onsite crankshaft grinding and repair services for crankpins and main journals up to 700 mm. With over four decades of hands-on experience, we are Asia’s most established and trusted company in this field.

We are the original developers and manufacturers of portable onsite crankshaft grinding machines. Our machine design originates from a reputed Italian engineering firm. To date, we have supplied over 80 onsite crankshaft grinding machines across the globe.

In addition to repair services, we also supply the complete range of tools and measuring instruments necessary for crankshaft repairs.

We offer hands-on training programs for client technicians at our in-house training center in New Delhi, India, conducted by our expert engineers. Our training sessions have been successfully delivered to clients from Colombia, Panama, Ecuador, Dubai, Singapore, Bangladesh, Tanzania, and many other countries.

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

The post Crankshaft Repair | Onsite Crankshaft Grinding | BERGEN Engine | 45 Years Experience appeared first on Crankshaft Grinding Repair.

A crankshaft is a piece of art manufactured with close tolerances; it needs expert services to successfully execute the repair. We have repaired some crankshafts that the small and inexperienced companies damaged due to lack of know-how and experience. Recently, we have saved the crankshaft of MAN Diesel Engine Model no. CME 5L 16/24 from rejection.

Following are the details:

Crankshaft repair of MAN Diesel Engine Model No. CME 5L 16/24. Crankshaft Grinding Engine Details Table

It was reported by Dubai Dubai-based company that one of their vessel which was sailing near Chittagong port had met with an accident and the crankshaft was damaged. RA Power Solutions. deputed two technicians along with necessary tooling to Chittagong. They boarded the vessel in a short time of 12 hours after receiving the first communication of the breakdown. This was possible as all our technicians have valid Indian CDC.

Following the Inspection of the crankshaft was conducted

• All the crankpins were subject to crack detection by MPI and no crack or abnormality was observed on the crankpin.
• Hardness with a portable calibrated hardness tester was checked and was found within limits.
• The deflection of the crankshaft was within limits.

All the crankpins were checked for taper and ovality out of five crankpins, two number crankpins had the following readings

Ongoing through the above dimensions, owners were surprised as the damage to the crankpins was beyond the last limit stipulated by the engine manufacturer i.e. MAN Diesel for Engine Model no. CME 5L 16/24. In other words as per the manufacturer, there was no solution but to reject the crankshaft and replace it with a new one.

RA Power Solutions took the following action to save the crankshaft from rejection

• Based on the above readings of crankpin no. 2 and crankpin no. 4, it was decided to undersize the crankpin to 1.5 mm and 2 mm from the standard diameter of 130 mm.
• The grinding was undertaken by our technicians and the final diameter of 128.50 and 128.00 mm was maintained.
• The undersized crankpin bearings of 1.5 mm and 2 mm were arranged by RA Power Solutions.
• The MAN Diesel Engine Model no. CME 5L 16/24 was commissioned and the engine is performing satisfactorily.

The under-sizing of the crankpin up to 2 mm is of course done under deviation and against the manufacturer’s recommendation but the fact is that the crankshaft has been successfully repaired and is saved from rejection which helped the owners of the vessel to save a considerable amount and downtime. We at RA Power Solutions always believe in saving the crankshaft from rejection. The cost of the crankshaft is exorbitant and has no justification by the engine and crankshaft manufacturer who enjoy the monopoly.

RA Power Solutions suggests not engaging companies with no expertise and specialized equipment for the repair of the crankshaft. We have the knowledge, experience, and necessary equipment to undertake the repair.

Crankpin Repair Services

We observed that companies avoid crankpin repair due to the time taken to repair of crankpin and the high cost. This was true as few companies based in Europe and Singapore enjoyed the monopoly and charged exorbitantly for crankpin repair. With the introduction of onsite crankpin repair and main journal repair machine, it is now possible to undertake the crankpin and main journal grinding and polishing in minimal time.

Secondly, the cost of crankpin repair charged by RA Power Solutions is almost one-fourth of the charges of European and other companies. In simple language, crankpin repair has become easy with a low cost. For more information about crankshaft grinding services, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

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