Crankshaft Reconditioning | Crankshaft Grinding Machine Exporter – RA Power Solutions

RA Power Solutions undertakes the repair of crankshafts having a diameter ranging from 35 mm to 700 mm. The concept of removing the crankshaft and sending it to the workshop for repair is now no longer valid, and the user gets the crankshaft repaired onsite.

During our working of more than forty years on marine main, crankshaft reconditioning, auxiliary engines, and high capacity diesel generating sets installed in industry, power plants, etc., we have observed that while the maintenance schedule stipulated by the engine manufacturer in the maintenance manual is religiously followed, but no attention is paid on the crankshaft’s condition.

Even during the maintenance schedule of 25,000 to 30,000 hours of operation, maintenance agencies and officials connected with the day-to-day upkeep of the engine ignore the inspection of the crankshaft till the seizure of bearing or any other major breakdown happens in the crankshaft.

**Repair of Crankpin on Board a Vessel**

We have experienced that irrespective of the metallurgy of the crankshaft and level of hardness after continuous operation of engine taper and ovality of the crankshaft, crankpin, and main journal are developed. The bearing surface becomes rough and in some cases bearing line marks, pitting, etc. is developed. Due to these abnormalities developed in the crankshaft, failure of bearing and crankshaft takes place. RA Power Solutions recommends that inspection procedures should be followed in order to ensure satisfactory performance of the crankshaft and to save it from rejection.

During the periodic maintenance schedule, the crankpins and main journals of the crankshaft should be checked for the development of taper and ovality.
The dimensions of the crankpin, taper, and ovality should be well within the limits specified by the manufacturers. There should not be any presence of bearing line marks or pitting on the crankpin journals.
The profile of the lubricating oil hole and radius fillet should be checked visually. There should not be any loss of the original profile.
The hardness test and the crack detection test by MPI or dye penetrant are not required till the major failure of the bearing or accident takes place.

Inspection of Crankpin on Board a Vessel

Checking of deflection of the crankshaft.
Positioning of crankshaft balancing weights. They should be tightened on specific torque as per the manual.

In case the above preventive inspection is undertaken on-site without disassembly of the crankshaft, the user can avoid any major damage to the crankshaft.

Onsite Machining of crankpins and main journals has been made simple in this era of technological renovation. The concept of removing the crankshaft and getting the crankshaft machined in the workshop is no longer valid. The onsite crankshaft machining is undertaken to maintain strictly all the tolerances as specified by the manufacturer and stipulated in the maintenance manual.

Crankshaft machining is no longer the monopoly of a bunch of companies based in Europe and the UK. The availability of a portable, easy-to-operate crankshaft grinding machine it has made simple and easy to undertake the polishing and grinding of the main journal if required.

RA Power Solutions is a reputable and leading crankshaft grinding machine exporter and crankshaft reconditioning, known for its high-quality products and exceptional services. With a strong commitment to customer satisfaction, RA Power Solutions has gained a stellar reputation in the industry. Our state-of-the-art crankshaft grinding machines are designed to precision grind and polish crankshafts, ensuring optimal performance and longevity of engines.

**Repair of Crankshaft by Portable Crankshaft Grinding Machine**

**Portable Crankshaft Grinding Machine**

RA Power Solutions has been extending onsite crankshaft inspection, main journal grinding, and crankshaft repair services for the last 40 years, We have a team of trained and experienced technicians who can fly to your site on short notice as all of them have valid CDC.

This blog was written by Mr. Raj Shahani (Managing Director of RA Power Solutions) having more than forty years of experience in providing services like crankshaft repair and grinding, crankpin machining, polishing, and grinding of crankshaft, engine repair, and overhauling, and many other services related to the high capacity engine.

For any queries regarding crankshaft grinding, grinding of crankshaft, crankshaft grinding services, crankshaft grinding machine, onsite crankshaft grinding, insitu crankshaft grinding repair, crankshaft grinding and repair, onsite crankshaft grinding machine, grinding of main journals, polishing crankshaft journals and crankshaft grinders, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Inspection of Crankpin After Grinding — **Inspection of Crankpin After Repair**

**Crankpin After Grinding & Polishing by Crankshaft Grinding Machine**

Crankshaft Grinding | Crankshaft Grinding Services | Crankshaft Machining – RA Power Solutions

RA Power Solutions undertakes crankshaft repair, crankshaft grinding, and polishing onsite all over the world. The company is extending 24/7 emergency service for repair of the crankshaft of main and auxiliary engines on board a vessel or land-based installations worldwide. We are having experience of 40 years in the field of engine repair and with the latest technology in the equipment, we are considered to be the most knowledgeable company in the world. Our response time in case of emergency is unbeatable. We have developed an onsite portable, lightweight crankshaft grinding machine up to the diameter of 700 mm which is kept ready all the time to be taken on the vessel or to any Diesel Engine installation all over the world.

**Grinding of Crankshaft is in Process**

The client has the definite advantage of awarding crankshaft repair, crankshaft grinding, and crankshaft machining work to us as we have carried out repair of over 10000 crankshafts having serious damage and were saved from rejection. We are confident of our workmanship and design of equipment and can repair your shaft successfully without stripping it down from the engine and transporting it to the workshop.

The following procedure is adopted for successful repair of the crankshaft:

Calibrated and modern instruments are used to undertake preliminary inspection of the crankshaft as follows:
1. Dimensional inspection to check taper and ovality
2. Crack detection by MPI/ultrasound or dye penetrant
3. Hardness test
4. Surface test to check surface roughness
5. Inspection to check the straightness of the crankshaft
6. Lube oil and radius fillet profile check
7. Visual inspection

**Inspection of Crankpin Before Grinding**

All the readings and observations are recorded in the inspection format, and onsite repair planning is done in consultation with our senior Engineer.

After inspection, grinding, and repair of the crankshaft, the following parameters are achieved:
1. Taper and ovality of the crankpin and main journal after grinding and polishing can be achieved within 0.02 mm.
2. The lubrication oil hole and radius fillet profile can be given as per the original profile.
3. The presence of crack and hardness readings are taken and recorded.
4. Straightness and run-out are maintained as per the manufacturer’s specifications. A surface finish of less than 20 RA values can be maintained and achieved.

**Inspection of Crankshaft After Grinding on Board a Vessel**

All the crankshaft grinding services, crankshaft repair, crankshaft grinding, and polishing jobs executed by RA Power Solutions are guaranteed for satisfactory performance. Price-wise, we are considered to be the lowest in the international market.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He has 44 years of experience in providing engine repair services all over the world.

For more information regarding crankshaft repair, onsite crankshaft grinding and polishing, crankshaft machining, crankshaft grinding services, and other engine repair services, please feel free to write to us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

**Onsite Grinding & Repair of Crankpin is in Process**

Compressor Crankshaft Grinding | Marine Crankshaft Grinding | Engine Crankshaft Grinding And Polishing – RA Power Solutions

RA Power Solutions is known as a leader in offering onsite repair of crankshaft worldwide with forty years of experience in this field, the company’s endeavor is always to save the Crankshaft from rejection.

The crankshaft meets with serious accidents and is even rejected by the European Repair Companies attended by RA Power Solutions and is successfully repaired. This is possible because of having technicians who have hands-on experience in repairing more than ten thousand crankshafts.

**Crankshaft Grinding Mirrless Blackstone**

All crankshafts are initially checked and inspected to ensure that they are acceptable for reuse or for repair. The onsite crankshaft grinding and crankshaft polishing are undertaken through the window of the engine block. Due to continuous innovation in the design and technology of crankshaft grinding machines manufactured and used by us, it is possible to maintain the dimensional tolerances strictly as per the original equipment manufacturer. The crankshaft grinding and polishing are done in the minimum possible time. Thus, reducing the breakdown time of the equipment considerably.

Presently, we are undertaking crank-pin and main journal grinding and repair up to 700 mm and are in the process of increasing the capacity up to 1000 mm. We undertake onsite crankshaft grinding of all popular makes of engine and their model. Few of them are as following-

**Offshore Grinding of Crankshaft is in Process**

Wartsila 6R32, 12V32, 18v32, Mirrlees Black Stone ESL, MAJOR K series Generators, Ruston, Allen, Yanmar, MAN B&W, Daihatsu engine, etc. For more details on the marine crankshaft repair, and crankshaft grinding machine, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Reconditioning | Crankshaft Machining | Crankshaft Repair | Crankshaft Grinding – RA Power Solutions

RA Power Solutions has forty-four years of experience in crankshaft reconditioning of large marine engines and engines installed in Power plants.

Diesel Engine Ready for Grinding & Repair

The onsite crankshaft repair and grinding is undertaken by RA Power Solutions’ experienced technicians for diameters ranging from 30 mm to 700 mm, which cover almost all the crankshafts used for different applications. It is generally observed that due to non-experience or lack of knowledge of the companies undertaking crankshaft reconditioning, Crankshaft misguide the end users resulting in serious breakdown and considerably higher expense.

Onsite Grinding of Crankpin by RA Power Solutions

RA Power Solutions has undertaken reconditioning of crankshaft exceeding ten thousand numbers and recommends the following situation for reconditioning of the crankshaft.

Recommendation for reconditioning of Crankshaft:

I) It is recommended to undertake crankshaft repair in case taper and ovality exceed the limit specified in the maintenance manual of the engine manufacturer.
II) In case of an accident, deep line marks or depression are developed.
III) Reconditioning of the crankshaft is recommended in case higher hardness is observed due to the seizer of bearings or any other reason.
IV) Development of surface crack.
V) Loss of alignment.
VI) In certain cases, although the dimensions of the CR Pin and Main Journal are observed within the limit, due to the rough surface observed on the CR Pin and of the Main Journal, the surface requires polishing.

The above suggestions are given for reconditioning of crankshaft. It is always advisable to send photographs and a brief Inspection report to RA Power Solutions for free recommendations as to how to repair Crankshaft successfully.

Contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383 for more information.

**Grinding of Crankpin by Onsite Crankshaft Grinding Machine**

**Crankpin After Onsite Grinding & Repair**

Crankshaft Grinding Machine | Crankshaft Grinder | Global Onsite Repairs – RA Power Solutions

Engine population is rapidly increasing for the shipping industry, power plants, and various applications. In most cases, engines are used not only for emergency purposes but as a base load. The continuous running of the diesel engine results in wear and tear of the crankpin and main journal of the crankshaft. In certain cases, taper and ovality more than the permissible limit is developed in the crankpin and the crankshaft main journal.

**Inspection of Engine Before Grinding**

The disassembly of the crankshaft from the main engine and sending it to the designated workshop is a lengthy process. This is now outdated. RA Power Solutions having the experience of more than four decades in the repair of crankshafts have developed a portable, lightweight engine crankshaft grinding machine and onsite crankshaft grinding machine which can be taken to the site as accompanying baggage. The onsite crankshaft grinding machine has the following features:

Light in weight can be carried to the site easily.
The portable nature of onsite crankshaft grinding machine facilitates it to insert from the inspection window and undertake grinding and polishing of the crankpin.
The machine is designed and can maintain the taper and ovality within 0.02 mm. This meets with the OEM’s tolerances.
Surface finish and other parameters can be maintained as per international norms.
Onsite crankshaft grinding machine is easy to operate
Onsite training is provided for smooth running of the crankshaft grinding machine.
More than 70 machines sold all over the world and performing satisfactorily.
Insitu crankshaft grinding machines are low-priced and recommended for repair workshops, shipping and engineering companies, and power plants.

**Inspection of Connecting Rod on Board a Vessel**

Crankshaft grinding machines are exported to various countries including Dubai, Singapore, Bangladesh, Indonesia, Greece, Qatar, Nigeria, South America, etc.

For more information on engine crankshaft grinding machines, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Machining | Crankshaft Grinding | Crankshaft Polishing | 44 Years Of Experience

With the experience of more than four decades, RA Power Solutions has been the leader in providing insitu crankpin, main journal grinding, and machining. The removal of the crankshaft from the engine block in case of an accident or normal wear and tear is not required. The removal of the crankshaft from the engine block is a lengthy process and expensive, and engine manufacturers are to be contacted for the disassembly and removal of the crankshaft from the engine.

The onsite crankpin, main journal grinding and crankshaft polishing are undertaken by RA Power Solutions using state-of-the-art equipment which can be taken to any site on a ship or land-based industry.

**Crankshaft Machining on Board a Vessel**

The onsite crankshaft grinding machine is placed on the damaged crankpin through the inspection window provided in the crankcase. Due to the compact design of the machine, most of the crankshafts can be repaired onsite.

RA Power Solutions undertakes onsite machining, onsite grinding of crankshafts, and crankshaft polishing services of diameters ranging from 60 mm to 700 mm.

**Onsite Crankshaft Grinding & Polishing Machine**

**Crankshaft Grinding Machine- Grinding Crankpin**

The jobs of crankpin and main journal repair of crankshaft executed by us have the following features:

Having the latest quality control measuring instruments to check hardness, crack by MPI, taper, ovality, surface finish, etc.
All instruments used for measuring the crankpin and main journal diameter are periodically sent to the laboratory for calibration. Valid certificates are kept in the record as per the requirement of inspection agencies.
The latest design and technology instruments/equipment are used prior to the repair of the crankshaft and after the repair is executed.

Advantage Of RA Power Solutions For Crankshaft And Main Journal Repair

Crankshafts are repaired onsite up to a diameter of 700 mm. No need for the removal of the crankshaft.
An experienced team of technicians is always ready to leave for sailing all over the world. The holding of seamen passports by technicians facilitates them to fly out to any country on short notice.
The robust design and use of titanium for manufacturing the body of the crankshaft grinding machine ensure minimum or no vibration while the crankshaft grinding machine is in operation. The job of repairing the crankshaft can be executed while the vessel is sailing.

All the services required for the repair of the engine and to put it back into operation are extended by RA Power Solutions, including commissioning and trial parts.

The experience of repairing over 10,000 crankshafts makes us a leader in this field. The cost of repair of the crankshaft and the services offered are the lowest in the industry. This is possible due to the continuous upgrading of technology and processes followed by us.

For more information regarding the onsite machining of crankshaft, crankshaft polishing, polishing of crankshaft, and onsite crankshaft polishing mail us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Onsite Crankpin Grinding- Large and Small Engine Repairs – RA Power Solutions

RA Power Solutions is engaged in onsite crankshaft grinding, crankshaft machining and crankshaft repair of small and high capacity engines. The crankshafts and all cylindrical shafts of rotatory equipment are repaired onsite without disassembly.

**Onsite Crankshaft Grinding While Vessel is on Move**

Following are the main features of the services offered related to crankshaft repair:

Experience technicians undertake crankshaft inspection which includes dimensional calibration for taper, ovality and hardness testing.
In case of failure of bearing or serious damage, it is important to undertake a crack check. We recommend magnetic particle inspection and dye penetrant.
Checking loss of alignment of crankshaft by deflection gauge or taking the run-out of the main journal.
Straightening of crankshaft is undertaken if required.
Radius fillet original profile is maintained in case of damage.
Onsite crankshaft grinding, crankshaft repair is undertaken by using

crankshaft grinding equipment maintaining the crankpin and main journal tolerances as per manufacturers.

Surface finish after crankshaft grinding and polishing is of great importance and is maintained.

Main points related to crankshaft repair services offered by RA Power Solutions:

A company having 40 years of experience in repair of crankshaft can easily detect the damage caused to the crankshaft due to accident.
We are experts in salvaging the crankshafts which as per the manufacturers are rejected. This is possible due to our vast experience, knowledge and use of the latest technological equipment.
A large team of experienced technicians have a valid passport and seaman book and can travel all over the world in the shortest possible notice.
In field of crankshaft repair, we are the leaders, most experienced, sincere and trustable.
The services provided is on the lowest rates and can be compared with other companies.
The only company having executed more than 11,000 jobs of crankshaft repair and engine overhaul maintenance worldwide.
All the repair services related to high capacity diesel generating sets is offered with a guarantee.

**Repair of Crankpin by Crankshaft Grinding Machine**

The only company in the world manufacturing onsite crankshaft grinding machine and onsite polishing machine and have sold more than 70 units all over the world.

Contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383 for more information regarding crankpin machining, crankpin repair.

Crankshaft Grinding by Pneumatic Grinding Machine – RA Power Solutions

Onsite crankshaft grinding is the latest trend in shipping industry. Removing the crankshaft from the engine block involves disassembly of all major parts, which requires time, effort, and money. The best solution for this is to undertake crankshaft grinding and crankshaft polishing onsite without disassembly of the crankshaft from the engine block.

The onsite grinding is undertaken by inserting the onsite crankshaft grinding machine from the inspection window.

Pneumatic Crankshaft Grinding Machine for Small Diameter

RA Power Solutions undertakes onsite crankshaft grinding and onsite crankshaft polishing and repairs up to 700 mm in diameter. We have a team of experienced technicians, who travel all over the world with portable and lightweight equipment. It is now possible to execute the crankshaft repair in a few hours, depending on the diameter and extent of the damage to the crankshaft.

RA Power Solutions has executed repairs of more than 10,000 crankshafts all over the world for leading shipping companies, power plants, heavy engineering companies, etc. We are respected in the industry for quality, sincerity, and low price. Contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383 for more information.

Crankshaft Grinding by Pneumatic Grinding Machine

Crankshaft Grinding & Repair by Grinding Machine is in Process

Crankshaft Repair & Crankshaft Grinding by Crankshaft Grinding Machine – RA Power Solutions

Crankshaft Repair does not require crankshaft to be removed from entablature. In recent past due to seizure of bearing or development of taper, ovality, 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.

The introduction of lightweight, vibration-free crankshaft grinding equipment facilitates grinding of crankshaft, crankpin and crank main journal on the spot while the crankshaft is assembled in the engine block. There is no necessity of even decoupling of alternator and other accessories from the diesel engine. The portable crankshaft grinding machine is placed on the crankpin or crank main journal through the inspection window of the entablature and the grinding and polishing operation is done.

The crankshaft grinding machine is centre less, vibration free equipment which ensures that the centre line of the crankpin is maintained. The crankshaft grinding and crankshaft polishing is done in one setting.

The crankshaft grinding machine is manufactured by us of diameter ranging from 60 to 700 mm. The machine is simple and easy to operate. We also provide training at the customer’s site for the operation and maintenance of the crankshaft grinding machine.

Company has sold more than 65 crankshaft grinding machine all over the world which are performing satisfactory. The machines are priced low and are ideally suited for large engineering, shipping companies, repair workshops, etc.More then 10000 Crankshafts are successfully repaired by us which is a record.

Crankshaft Grinding from Engine Block Window

Contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383 for more information.

Repair of Crankshaft | Onsite Crankshaft Repair-RA Power Solutions

Reduce Cost And Breakdown Time By Onsite Repair Of Crankshaft

Onsite Crankshaft Grinding and Polishing Machine

The failure of the crankpin and main journal bearing causes serious damage to the crankshaft, which is as follows:

Development of excessive taper and ovality in Crankshaft, Crankpin, and Main Journal.
Development of crack
Abnormal increase and decrease in hardness
Loss of alignment of crankshaft, resulting in the increase in deflection readings.
Development of bearing line marks, pitting, local depression
Damage to radius fillet and lube oil profile

The onsite crankshaft grinding equipment developed and manufactured by us is capable of undertaking grinding and polishing of crankshaft in one setting. The tolerances after crankshaft repair are strictly maintained as per the manufacturer’s specifications.

We have a highly trained, skilled team of technicians who are deputed to the plant site or on a vessel in the minimum possible time. The process followed by us for the repair of the crankshaft is faster, more cost-effective, and more convenient. It of course avoids the removal of the crankshaft and transport to the workshop.

The repair of crankshaft executed by RA Power Solutions Pvt. Ltd is approved by leading inspection agencies including Lloyds, DNV, and many other inspecting agencies. For more information, please write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.