Deputation of RA Power Solution technicians to Suez Port:

RA Power Solutions deputed two technicians, along with an onsite crankshaft grinding machine and necessary measuring instruments, to Suez Port, where they boarded the vessel. The inspection of crankshaft was conducted as per the RA Power Solutions protocol.

The following are the main observations:

(i) On the visual inspection of the crankpins, it was observed that all seven crankpins were damaged. The bearing material was embedded on a few of the crankpins. The deep bearing line marks and rough surface are also observed.

(ii) The hardness of the crankpin was taken, and no abnormality was observed.

(iii) The crack detection of all seven crankpins was undertaken by the MPI method, and no crack was observed.

(iv) On dimensional inspection of the crankpins, orality in the range of 0.10 mm to 0.26 mm was observed in the case of six crankpins. In the remaining one, a crankpin ovality of 1.40 mm was observed.

The standard details of the crankshaft are as follows:

Action taken by RA Power Solutions for the successful repair of MAN B&W crankshaft:

(i) Six numbers of crankpins were undersized by 0.5 mm.

(ii) One number of crankpins was undersized by 2.0 mm.

(iii) We strictly maintained all parameters as per the manufacturer’s requirements and the maintenance manual.

Global Onsite Crankshaft Grinding & Crankpin Repair Services

RA Power Solutions is a leading global provider of onsite crankshaft grinding, crankpin repair, and journal machining for marine and industrial engines. With 45+ years of experience, we deliver fast, reliable, and cost-effective crankshaft repair services anywhere in the world—directly onboard your vessel or at your power plant.

Our engineers travel worldwide to execute in situ crankshaft grinding, eliminating downtime and avoiding the costly replacement of damaged crankshafts.

We have successfully completed repair projects in:

Egypt, UAE, Saudi Arabia, Qatar, Oman, Kuwait, Singapore, Malaysia, Indonesia, Turkey, Greece, Bangladesh, Sri Lanka, Azerbaijan, Nigeria, Ghana, and multiple West African regions.

We specialize in restoring crankshafts for major engine brands and models, including:

• MAN B&W: 7L23/30H, 5L23/30, 6L23/30, 6L21/31, 6S35MC, 7S50MC
• MAK: 6M20, 8M20, 6M32, 8M32, 8CM32C
• Daihatsu: 6DK-20, 5DK-20, 6DE-18
• Wartsila: Vasa 12V32LN, 6L32, 9L20
• Caterpillar: G3616, 3508, 3516
• Yanmar: EY18, EY22, 6N165

Using portable, advanced onsite machining tools, we undertake:

• Crankpin grinding & undersize machining
• Main journal grinding
• Ovality & taper correction
• Crack detection (MPI)
• Hardness testing & dimensional inspection

Whether your ship is docked or sailing, we deliver OEM-standard accuracy, restore the crankshaft quickly, and minimize your downtime.

RA Power Solutions continues to be the preferred choice for in place machining and grinding and global crankshaft grinding services, trusted by shipping companies, offshore operators, and power plants worldwide.

For any information, please email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

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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.

We also design, manufacture and supply In-Situ Crankshaft and cylindrical shaft repair machines up to 700 MM diameter.

Accessories used in Crankshaft grinding machine	Onsite Crankshaft Grinding and Polishing Machine

The main advantage of In-Situ Crankshaft/Cylindrical Shaft repair machine is that there is no requirement for removal of Crankshaft, Intermediate shaft, Pump Shaft, or any type of Cylindrical Shaft from the casing. The grinding and repairs of damage shaft is possible On-Site.

Major Highlights In-Situ Crankshaft Grinding Machine

1. The In-Situ Crankshaft grinding machine is portable and light in weight can be easily carried by technicians to the site to undertake the Crankshaft Repair.
2. Onsite Grinding and Polishing of Crankshaft is done by a single Crankshaft Grinding Machine, which is easy to operate.
3. The In situ Crankshaft Grinding Machine is capable of grinding the Crankshaft on site within close dimensional tolerance.
4. The In-Situ Crankshaft grinding Machine is of latest technology and is user-friendly.
5. We can supply the Insitu Crankshaft Grinding Machine range starting from 60 mm to 700 mm in terms of diameter

Portable Crankshaft Grinding Machine

Save Cost Of Repair By Small Investment On In-Situ Crankshaft Grinding Machine

1. Portable, lightweight crankshaft grinding machine can be taken to the site.
2. Save cost and downtime, as dismantling of crankshaft is not required.
3. Machine easy to operate, onsite training is provided.
4. Latest technology, new invention, low cost. Reduce cost of maintenance.
5. More than 77 equipment supplied worldwide.

Crankshaft Repair & Crankshaft Grinding by In-Situ Crankshaft Grinding Machine

Crankshaft Repair does not require the crankshaft to be removed from entablature. In the recent past due to seizure of bearing or development of taper, ovality, or loss of alignment of crankshaft, it was necessary to remove the crankshaft from the engine block and send it to the designated workshop for crankshaft grinding and crankshaft repair.

Manufacturer of Crankshaft Grinding Machine	Crankshaft Grinding Equipment

The introduction of a lightweight, vibration-free crankshaft grinding equipment facilitates grinding of crankshaft, crank pin, and crank main journal on the spot while the crankshaft is assembled in the engine block. There is no necessity of even decoupling the alternator and other accessories from the diesel engine.

Training In Situ Crankshaft Grinding Machine

We offer training to customer technicians in their workshop. The technicians should have basic knowledge and experience of handling common instruments like micrometer, bore gauge, and vernier caliper. The following areas are covered during the training of working on crankshaft grinding machine.

Crankshaft Grinding Machine Ready for Dispatch	Crankshaft Grinding and Polishing Machine

1. Opening, and assembly of the machine on the crankpin is shown on a dummy or actual crankshaft.
2. Operations like grinding, polishing, and giving the feed are taught.
3. Inspection of crankshaft in different stages of repair of polishing and grinding is shown to the technician.
4. Upkeep, cleaning, and maintenance of the crankshaft grinding machine is explained.

The suggested duration of training is 1 week.

Portable Crankshaft Grinding and Polishing Machine

For more information regarding Onsite Crankshaft and Cylindrical Shaft Repair Machine, in situ crankshaft grinding and repair, insitu crankshaft grinding machine, portable onsite crankshaft grinding equipment, Onsite Crankshaft Grinding and Polishing Machine, onsite crankshaft polishing machine, grinding and repair of onsite crankshaft, Cylindrical Shaft Repair please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

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Details of crankshaft grinding of MAN B&W 6L 28/32H are as follows

Based on the above information of MAN B&W 6L 28/32H. crankshaft, our two technicians along with the in situ crankshaft grinding machine were deputed to Cape Town. The boarding on the vessel was in a short time as our technicians possess Indian CDC.

Inspection of the crankshaft of MAN B&W 6L 28/32H was done and made following main observations

• All six crankpins were subject to dimensional inspection for taper and ovality. The ovality ranging from 0.16 to 0.23 mm was observed on all the crankpins.
• The crankpins were subject to MPI by high-intensity magna flux torch, no crack or abnormality was observed and it was concluded that although there was a surface crack-like pattern on crank pin no. 3 was observed but on the MPI test, it was concluded that there was no crack on the crankpin.
• The hardness of all the crankpins was checked by a portable hardness tester. This was done again by indexing a pattern with a gap of 15 mm vertically and horizontally.
• The deflection of the crankshaft was checked and was observed within 0.04 mm. This ruled out the possibility of any loss of alignment of the crankshaft.
• All crankpins were checked visually. The radius fillet and lubricating oil hole profile was observed as original with no marks or damage.
• Deep bearing line marks were observed on the crankpins.
• Bearings were checked and the upper layer of the bearing was removed and had scratch marks.

Action was taken by RA Power Solutions to repair the crankshaft of MAN B&W 6L 28/32H

Considering the above observations, it was decided to undertake grinding of all crankpins to 0.5 mm.

• The standard crankpin diameter of this crankshaft is 230 mm and the bearing width of 95 mm.
• The insitu grinding of all crankpins was undertaken by our technicians and the size was reduced from 230 mm to 229.50 mm.
• The crankshaft was again subject to final inspection and a report was prepared.

RA Power Solutions Achievement

The in situ crankshaft grinding and repair of MAN B&W 6L 28/32H was done while sailing the vessel between Cape Town and Vadinar Port in India. The tolerance maintained by all the crankpins was within 0.03 mm.

RA Power Solutions achieved this milestone of undertaking the grinding of six crankpins while sailing the vessel by using state of art, latest technological, advanced in situ crankshaft grinding machine. This machine is designed and manufactured by RA Power Solutions to have minimum or zero vibrations while in operation. The maintenance of close tolerance after grinding is possible only because of the use of our latest design of in situ crankshaft grinding machine.

RA Power Solutions has the equipment ready to undertake crankshaft repair up to 700 mm in diameter. Our technicians are trained in our training school and have experience ranging from 20 to 40 years in successful insitu crankshaft repair.

For your requirement of in situ grinding, in situ grinding of crankpin, and insitu crankshaft inspection please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

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