crankshaft grinding and repair Archives

Crankshaft Repair Services And Tools

Crankshaft repair is required in case of the following abnormalities observed in the crankshaft

Development of taper and ovality in crankpin and main journal of the crankshaft in access of tolerances stipulated by the manufacturer.
Development of bearing line marks, pitting, and rough surface.
Damage of radius profile due to accident or seizure of bearing of crankpin or main journal.
Development of crack and variation in hardness of the crankpin and main journal of the crankshaft.
Loss of alignment of the crankshaft.

Crankshaft repair is undertaken by RA power solutions of the crankpin and main journal of the crankshaft diameter ranging from 35mm to 700mm. Crankshaft repair is undertaken by experienced technicians who have been specifically trained in our workshop on a dummy crankshaft, the company has experience of more than four decades in crankshaft repair services.

The on-site grinding equipment designed and manufactured by RA power solutions can maintain a close tolerance after crankshaft grinding within 0.02mm and the surface finish which is far superior to international standards. The crankshaft grinding machine has a main frame manufactured out of titanium steel which makes it lighter and vibration-free during operation. The grinding of the crankshaft is possible even while sailing of the vessel and there is no requirement of holding the vessel at anchor or a port for crankshaft repair.

RA Power Solutions is a leading provider of specialized crankshaft repair services and innovative crankshaft repair tools. With a team of highly skilled technicians and engineers, we offer comprehensive solutions for repairing damaged or worn-out crankshafts in various industries. From onsite inspections to comprehensive repairs, we are equipped to handle all aspects of crankshaft maintenance. Our advanced crankshaft repair tools, designed with precision and durability in mind, streamline the process, guaranteeing swift yet reliable service.

All the crankshafts repaired by RA power solutions are guaranteed for a satisfactory performance we have successfully executed more than 10,000 crankshaft repair jobs. The services of crankshaft grinding and crankshaft repair are offered at low cost and our technicians carry CDC of Indian origin, Panama, and Pallav.

Contact numbers for rajshahani@rapowersolutions.com, info@rapowersolutions.com, and +91 9582647131 and +91 9810012383 are available for more information on crankshaft repair services.

Crankshaft Repair | Crankshaft Grinding and Crankshaft Polishing – RA Power Solutions

The concept of onsite repair of crankshaft is getting popular with the introduction of a portable lightweight on-site crankshaft grinding machine. Now it is possible to undertake crankshaft repair, crankshaft grinding and polishing on site without dismantling the crankshaft from the engine.

On-site Crankshaft Repair, Crankshaft Grinding, and Crankshaft Polishing costs low with minimum downtime and inconvenience as it does not require removal of crankshaft from the engine block, packing, and transportation to the designated workshop for repair by grinding or polishing process.

Advantage of trusting RA Power solutions

First company based in Asia having experience of four decades in Crankshaft Repair, Crankshaft Grinding and Crankshaft Polishing.
All repairs of crankshaft and process followed for grinding of crankshaft and polishing of crankshaft are approved by class agencies of repute like DNV, Lloyds and various inspecting organisations spread all over the world.
The repair of crankshaft is executed with a guarantee for the satisfactory performance, the pre and final inspection reports before and after grinding and polishing crankshaft are submitted.
Technicians executing the repair of crankshaft onsite are highly skilled, trained in our factory on a dummy crankshaft in order to understand the techniques for successful repair of the crankshaft. Some of our technicians have experience of more than 45 years.
The onsite inspection and polishing of crankshaft repair is recommended to enhance the life of crankshaft and bearings.
RA power solutions offer and undertake inspection and polishing of crankshaft on board a vessel at a nominal cost.
During our working of four decades on diesel power plant, shipping companies we have undertaken Crankshaft Repair, Crankshaft Grinding and Crankshaft Polishing number exceeding more than 10,000.

Conclusion:

RA power solutions has team of technicians with valid CDC from Panama, Palau, and India and can travel all over the world with short notice.

For more details regarding crankshaft grinding, on site crankshaft repair, onsite crankshaft grinding and polishing please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Repair | Crankshaft Grinders | Onsite Crankshaft Machining

RA Power Solutions undertakes the Grinding of Crankshaft of High Capacity Engines used in Shipping companies, Power plants, and in various other sectors. The company has experience of more than forty years in undertaking successful repair of Crankshafts and major components. As we are aware Crankshaft is the heart of the engine and is the most expensive part with limited availability of particular make and model.

Our expertise lies in the repair of crankshafts that meets with a serious accident like a Seizure of a bearing. It is generally observed that due to rubbing of the bearing steel surface with the CR Pin diameter, excessive heat is generated. Thus there is an increase in Hardness. Every manufacturer specifies the maximum limit of Hardness.

Damaged CrankPin of Mirrlees Blackstone Engine

In the case of Mirrlees Blackstone K and KV, major series of engines, the normal hardness at the time of manufacturing of the crankshaft is between 21.5 to 26 on HRC Scale (241 to 268 on the HB scale). It is obvious that after the seizure of the bearing, the hardness increases even to the level of 45 to 50 HRC.

The Mirrlees Blackstone allows the higher hardness under a deviation maximum of up to 32 HRC against the standard of a maximum of 26 HRC. In normal situations as per the manufacturer, the crankshaft stands rejected as it has far higher Hardness than the stipulated in the manual.

Field Instruction for Crankshaft Rehabilitation of Mirrlees Blackstone Engine

RA Power took the following action to save the Crankshaft.

The Hardness was taken on various spots, not having a gap of more than 15 mm.
Hardness was recorded and a maximum hardness of 50 HRC was observed.
Since bearing line marks, taper, and ovality on the crank pin were observed, the grinding was undertaken and CR Pin dia was reduced by 3.5 mm approx.
The Hardness was reduced and the maximum Hardness of 42 HRC was observed in a few spots. Although the 42 HRC Hardness was on the higher side than the maximum limit of 32 HRC specified by the manufacturer. The Crankshaft was accepted under deviation due to the following reasons:
1. The higher Hardness was observed in a scattered pattern.
2. The higher hardness was away from the Lubricating Oil Hole and radius fillet of the CR Pin which are considered to be critical Zone.

The versatility of RA Power Solutions crankshaft grinders caters to a wide range of marine and industrial crankshafts, irrespective of their size and design.

The Crankshaft was accepted and his performance is observed as satisfactory from last more than three and half years. The saving of the Crankshaft from rejection was possible only due to the Experience RA Power Solutions has of successful repair of more than ten thousand crankshafts.

RA Power Solutions undertakes Crankshaft Repair, Crankshaft Grinding and offers Onsite Crankshaft Machines to repair companies. We are a leading provider of crankshaft grinding and repair services, specializing in utilizing state-of-the-art crankshaft grinders.

With our state-of-the-art crankshaft grinders and highly skilled technicians, we can accurately recondition damaged or worn-out crankshafts to the original manufacturer’s specifications. By using advanced techniques and precision machinery, RA Power Solutions ensures that the repaired crankshafts regain their perfect alignment, surface finish, and dimensional integrity. Whether it’s a large marine engine or a compact generator, their expertise and commitment to quality make them a reliable choice for any crankshaft-related concerns.

With the use of RA Power Solutions crankshaft grinders, a significant decrease in downtime and repair costs can be achieved, allowing businesses to maintain productivity and efficiency.

Note: The writer of this article is Mr. Raj Shahani, Managing Director of RA Power Solutions Pvt Ltd.

Grinding & Repair of Crankpin is in Process

Finished Crankpin after Grinding & Repair

For more details on in situ crankshaft grinding and repair, crankshaft grinders, crankshaft grinding repair services, or crankshaft machining contact today by email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Grinding and Crankshaft Repair by Experienced Technicians – RA Power Solutions

Crankshaft grinding and crankshaft repair are important for satisfactory performance of engine. RA Power Solutions Pvt. Ltd. has been undertaking crankshaft repair onsite by portable, light weight crankshaft grinding machine. The crankshaft repair is executed of crankshaft diameter ranging from 60 mm to 700 mm.

We have team of trained and dedicated technicians who are deputed to the site with crankshaft grinding machine along with necessary instruments. The crankshaft repair is undertaken without removing the crankshaft from the entablature.

Crankshaft Grinding of Wartsila Diesel Engine

The crankshaft grinding machine used to undertake crankshaft repair is of latest design having minimum vibrations. This facilitates our technicians to undertake crankshaft repair even while the vessel is sailing. The tolerance after crankshaft grinding and crankshaft repair is maintained within 10 to 20 microns in terms of taper and ovality.

The repair of crankshaft and overhauling of engine while sailing of the vessel between two ports results to the considerable saving to the ship owners as there is no need of holding the vessel at port or anchorage.

The crankshaft repair executed by us is guaranteed for the satisfactory performance. As on date we have executed more than 10,000 repair of crankshaft all over the world.

Crankshaft Grinding of MAN Diesel Engine

For more information on in situ crankshaft grinding machine and grinding of crankshaft please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Grinding – RA Power Solutions

Crankshaft grinding is undertaken by RA Power Solutions having four decades of experience in repair of crankshaft. We have technicians who are trained in our workshop giving them the job training for Grinding of crankshaft and repair of Crankshaft.

We use latest design of crankshaft grinding equipment which is vibration free and is capable to maintain close tolerances in terms of taper and ovality. Crankshaft grinding and crankshaft polishing is done in one setting thus reducing the time of crankshaft repair considerably.

Crankshaft grinding and repair is also undertaken on board the vessel and while the vessel is sailing.

Crankshaft Grinding Machine- Vibration Free

If you are in need of on site crankshaft grinding and repair, on-site crankshaft repair, and crankshaft polishing, please contact RA Power today. We will be happy to answer any of your questions. Dial +91 9582647131 or +91 9810012383 and email info@rapowersolutions.com, rajshahani@rapowersolutions.com for more detail.

In Situ Crankshaft Grinding Services by RA Power Solutions

For almost 43 years, we have provided on site crankshaft grinding services, on-site crankshaft repair, crankshaft reconditioning, crankpin reconditioning, and marine crankshaft repair. Our engineers have received training in crankshaft production facilities in Europe and the United States as well as crankshaft grinding services.

It is observed that due to seizure of bearing in most of the cases, crankshaft loses its alignment and develops bend. The alignment of crankshaft is important and it is maintained at the time of machining and grinding of crankshaft.

RA Power Solutions undertakes straightening of crankshaft onsite irrespective of the length of crankshaft, diameter of CR pin and main journal. The straightening of crankshaft is done by peening procedure for which our technicians are trained. Number of jobs has been successfully executed for straightening and onsite grinding of crankshaft.

Grinding of Crankshaft by Crankshaft Grinder

At RA Power, we specialize in precision Crankshaft Grinding, a critical process that restores the functionality and integrity of crankshafts for various industries, including automotive, marine, and industrial applications. Our state-of-the-art equipment and skilled technicians ensure the highest level of accuracy and surface finish, extending the life and performance of your crankshafts.

Our specialized team and advanced machinery ensure that your crankshafts are meticulously restored to their original specifications.

Grinding of Crankshaft on VBlock by Crankshaft Grinding Machine

Insitu Crankshaft Grinding Machine from Crankcase Window

RA Power Solutions has recently supplied a crankshaft grinding machine ranging from 220 to 260 mm in Diameter to a Bangladesh-based client. This is the first onsite crankshaft grinding machine to be sold in Bangladesh.

In situ Straightening of Crankshaft is undertaken by the pining process, this in situ Crankshaft Repair saves Crankshaft from rejection. Technicians are specially trained for on-site repair of Crankshaft.

For more information on crankshaft grinding services, in situ crankshaft grinding machine, on site crankshaft grinding, crankshaft grinding machine, and insitu crankshaft polishing email us at info@rapowersolutions.com or rajshahani@rapowersolutions.com and call us at +91 9810012383,+91 9582647131.

Crankshaft Repair in Limited Engine Space – RA Power Solutions

RA Power Solutions Pvt. Ltd. have successfully executed crankshaft repair on board a vessel of Hyundai engine. The crankshaft repair companies based in Norway, Singapore, and UK were invited to execute the grinding operation on crankshaft bearings of which were seized due to lube oil pump failure. These companies were not able to execute the repairs due to non availability of compact portable tool which was required as the space available from the inspection window was less.

Knowing the constraints of space, RA Power Solutions Pvt. Ltd. designed and manufactured a special-purpose crankshaft grinding machine which was inserted from the inspection window, and grinding of 6 nos. pins was successfully executed. The engine is performing satisfactorily.

The repair of crankshaft on site was possible because the crankshaft grinding machine designed by RA Power solutions was compact, lightweight and was manufactured according to the size of the window and space available in the crankcase of the engine. The technicians were able to maintain the tolerance after grinding within 20 microns against the stipulated tolerance of 30 microns in the manufacturers manual.

**Repair of Crankshaft in Limited Space**

We have successfully done more than 10,000 jobs of crankshaft repair all over the world like Qatar, Dubai, Sudan, Indonesia, Singapore, South America, Malaysia, Jordan, Kenya, Maldives, Nigeria, Iran, Iraq, Oman, etc.

For more details on crankshaft repair, crankshaft grinding and polishing machine, diesel engine repair, or onsite crankshaft grinding contact us by email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.