Crankshaft Repair | Ammonia Compressor | Refrigeration Compressor | Reciprocating Compressor – RA Power Solutions

Your complete compressor crankshaft repair solution :

Are you facing any problem with the crankshaft of your compressor? RA Power Solutions has made the repair of compressor crankshaft easy.

By the introduction of new, revolutionary technology, the compressor crankshaft can be inspected on-site and repaired if required.

Following are the common problems observed in compressor crankshafts :

Excessive wear and tear of crank pin and main journal.
Increase of oil gap between the crank pin, main journal, and bearing.
Frequent damage of crank pin and main journal bearings due to development of excessive taper and ovality.
Seizure of crank pin and main journal bearings on compressor crankshaft due to non-replacement of bearings within the specified time schedule.
Development of rough surface of crankpin and main journal due to bad quality of lubricating oil and lubricating oil filters.
Damage of both sides of radius fillet due to an accident.
Damage of crank pin of compressor crankshaft due to excessive ovality in connecting rod big end bore.

With the introduction of latest technology, there is no requirement of dismantling the crankshaft from compressor casing.

Our technicians visit the site and undertake onsite compressor crankshaft inspection. We have on-site compressor crankshaft polishing and grinding equipment available which is carried by our technicians and repairs are undertaken in no time.

SAVE YOUR COMPRESSOR CRANKSHAFT AND INCREASE THE LIFE:-

We strongly suggest for medium and high-capacity compressors that their crankshafts should be periodically calibrated for taper and ovality, rough surface, hardness, and crack detection.

It is always advisable to get the crankshaft compressor inspected so that corrective action can be taken on time.

The loss of crankshaft brings the whole plant to the stand-still and now can be avoided by availing the expert services of RA Power Solutions, we regularly undertake inspection and repair of compressor crankshaft of Ariel, Cummins, Kirloskar, Samson, Porter-Cable, Stanley Bostitch, Campbell Hausfeld, DeWalt, Makita, Senco, ANEST IWATA, Gardner Denver, Graham Sulzer, Hitachi, Rolair Systems, Brehob, Lufkin, Zebra, Ingersoll Rand, etc.

This blog is written by Mr. Raj Shahani (Managing Director of RA Power Solutions India Pvt. Ltd.).

Mr. Shahani is a highly experienced business leader with rich experience of more than 40 years in the field of Power, Heavy, and Shipping industry. He is Technical Adviser to many shipping and heavy industries across the globe.

Mr. Shahani is one of the most enthusiastic professional, and he has all the brilliance of an exemplary leader. Mr. Shahani is an extremely effective coach and mentor of teams and is adept at providing leadership in a global, cross-cultural environment.

For more information regarding crankshaft repair, crankshaft grinders, polishing crankshaft journals, refrigeration compressor crankshaft repair, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

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

RA Power Solutions have been working on high-capacity diesel engine overhaul, repair, and maintenance and grinding of crankshaft for the last more than 40 years. During our work on engines on board a vessel or in large engineering plants, we have observed that the incidents of crankshafts getting damaged due to accidents are getting very often.

As we are aware that the crankshaft is the heart of the engine by means of connecting rod the crankshaft converts reciprocating motion to the liner movement which drives the engine. RA Power Solutions have the process, technology, and onsite crankshaft grinding machines ranging from 35 mm to 700 mm and crankshaft repair is now possible without disassembly of the crankshaft from the engine. The repair of the crankshaft is possible irrespective of its length and weight as we have the equipment available up to 700 mm in terms of diameter.

The crankshaft in general has various applications including diesel generating sets and marine engines typical areas of crankshaft applications are as follows:

Compressors
Railway vehicles/engines
Power generators
Forging hammers
Pumps
Marine engines, etc.

The crankshaft of high-capacity engines used for marine and land-based applications are of forged steel. RA Power Solutions has experienced technicians, and advanced technology equipment i.e. in situ crankshaft grinding machine to maintain the dimensions and tolerances strictly as per the manufacturer’s specifications and recommendations. Major parameters maintained after crankshaft grinding and repair and grinding of crankshaft are as follows:

Taper and ovality can be maintained within 0.02/0.03 mm or less as per the requirement of the engine manufacturer.
The portable in situ crankshaft grinding machine used by RA Power Solutions technicians is capable of maintaining a surface finish of far less than 0.03 RA value.
The high surface finish value after grinding of crankpin and main journal diameter of the crankshaft enhances the life of connecting rod and main bearings considerably.

Inspection of Crankpin Before Repair & Grinding

The radius profile of both the end of the crankpin or main journal and the lubricating oil profile is maintained strictly as per the original profile.
The straightness/runout of the crankshaft is checked, and the crankshaft is straightened if required by the peening process.
Counterweight can be replaced in case of damage and supporting threads are repaired onsite.

Machining of Crankshaft by Insitu Crankshaft Grinding Machine — Machining of Crankshaft by In situ Crankshaft Grinding Machine

During our work of more than four decades, we have repaired more than 10,000 crankshafts used for different applications. All the repairs are executed with a guarantee. We are an ISO-certified company and also meet the standards requirements like DNB, Lloyd’s, etc. All our technicians possess Indian CDC and can join the vessel in a short time in any part of the world.

Crankpin After Repair by Insitu Crankshaft Grinding Machine — Crankpin After Repair by In situ Crankshaft Grinding Machine

Crankshaft grinding and repair are essential processes in the field of engine maintenance and precision engineering. The crankshaft, being a crucial component in any engine, requires meticulous attention to ensure its optimal performance. At RA Power Solutions, we specialize in main bearing machining, grinding of crankshaft, and in situ crankshaft grinding.

For more information regarding in situ crankshaft inspection, in situ grinding crankpins, and cost-effective crankshaft grinding Dubai contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Grinding & Repair Services | Crankshaft Reconditioning | Crankpin Machining – RA Power Solutions

RA Power Solutions undertakes onsite crankshaft grinding and repair, crankpin reconditioning, and crankpin machining up to a diameter of 700 mm. It is observed that due to serious accidents sometimes the radius fillet of the crankpin or main journal is damaged and it is difficult to undertake the crankshaft repair onsite without removing the crankshaft from the engine block and transporting it to the designated workshop.

With more than forty years of experience in this field, we have added a portable onsite crankshaft grinding and polishing machine which can undertake crankshaft grinding and crankshaft polishing without taking the reference of radius fillet of the crankpin or crank main journal thus saving the crankshaft from rejection.

**Inspection of Crankpin on Board a Vessel**

**Inspection of Crankpins is in Process**

It is our experience that the cost of the crankshaft is very high, and in the case of high-capacity engines it works out to be 20 to 25% of the cost of the engine. Considering this fact, it is most important that the job of crankshaft grinding and crankshaft repair is entrusted to the company which has experience in repairing the crankshaft successfully. With the experience of four decades in this field and successfully repaired more than 10,000 crankshafts, we are considered to be leaders in this field and are trusted by the shipping companies, diesel power plants, and engine manufacturers for repair of crankshaft strictly as per the specifications and tolerances stipulated by the manufacturer.

The timely inspection and repair of the crankshaft are again of great importance. We have a team of engineers who can fly on short notice for the inspection and repair of the crankshaft to any part of the world. The crankshaft repair undertaken by us is guaranteed satisfactory performance.

Our crankshaft grinding services have the following features:

Onsite machining, grinding, and polishing of crankpins up to 700 mm.
Onsite machining, grinding, and polishing of all cylindrical shafts including turbine, alternator, pump shafts, and tail shaft up to the diameter of 700 mm.
Repair of radius fillet by grinding and polishing.
Portable pneumatically, lightweight crankshaft grinding machine which can be taken to any site all over the world.
All technicians having valid CDC can sail on the vessel.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in providing services related to engine repair and overhauling, crankshaft grinding and polishing, crankpin reconditioning, crankshaft repair, and many more.

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

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

RA Power Solutions undertake crankshaft repair, crankshaft grinding and polishing onsite all over the world. The company is extending 24/7 emergency service for repair of crankshaft of main and auxiliary engines on board a vessel or for the 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 a most knowledgeable company in the world. Our response time in case of emergency is unbeatable. We have developed 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 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 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 crankshaft, the following parameters are achieved:
1. Taper and ovality of crankpin and main journal after grinding and polishing can be achieved within 0.02 mm.
2. Lubrication oil hole and radius fillet profile can be given as per the original profile.
3. Presence of crack and hardness readings are taken and recorded.
4. Straightness and runout are maintained as per the manufacturer’s specifications. Surface finish of less than 20 RA value 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 is having 40 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 are 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 is 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, 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 is having more than forty 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 diameter 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 of Crankshaft misguide the end users resulting to serious breakdown and considerable 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 exceeds the limit specified in maintenance manual of engine manufacturer.
II) In case due to accident, deep line marks or depression is developed.
III) Reconditioning of crankshaft is recommended in case higher hardness is observed due to seizer of bearings or any other reason.
IV) Development of surface crack
V) Loss of alignment.
VI) In certain cases, although the dimensions of CR Pin and Main Journal are observed within the limit, but due to rough surface observed on CR Pin and of Main Journal, surface require polishing.

Above suggestions are given for reconditioning of crankshaft. It is always advisable to send photographs and brief Inspection report to RA Power Solutions for free recommendation as 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 of the cases engines are used not only for the emergency purpose but as a base load. The continuous running of diesel engine results to 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 to send 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 repair of crankshaft have developed a portable, light weight 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.
Portable nature of onsite crankshaft grinding machine facilitates it to insert from the inspection window and undertake grinding and polishing of the crankpin.
Machine is designed and can maintain the taper and ovality within 0.02 mm. This meets with the OEMs 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 satisfactory.
Insitu crankshaft grinding machines are low-priced and recommend 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.

Crankpin Grinding | Crankpin Repair by Insitu Crankshaft Grinding Machine- RA Power Solutions

Crankpin grinding, and crankpin repair by in situ crankshaft grinding machine is offered by RA Power Solutions through a highly motivated team of technicians who have the experience of four decades in crankshaft grinding and crankshaft repair. It is important that the crankshaft is initially inspected by experienced technicians in order to detect the fault after the damage or accident.

**Inspection of Crankpin Under Process**

The following are the major parameters that are examined before the repair of the crankshaft:

Minimum and maximum diameter of the crankpin and main journal, taper, and ovality is checked.
Run out of main journals and deflection readings are taken to verify the loss of alignment.
A complete non-destructive test using MPI and ultraviolet lamp for heat cracks is undertaken of crankpins and the main journal of the crankshaft.
The crankshaft is also subject to a hardness test.

Based on the preliminary inspection reports prepared by the technicians the repair procedure is planned. The onsite crankshaft grinding machine used for the crankshaft repair is lightweight and is placed on the damaged crank pin from the inspection window of the engine block. There is no requirement of removing the crankshaft from the Entablature and send it to the workshop as bench-type grinders are now outdated.

The crankshaft grinding and crankshaft polishing is undertaken to maintain taper and ovality, surface finish as per the OEMs requirement. RA Power Solutions have facilities to undertake in situ crankshaft grinding, crankshaft polishing, and repair of crankshaft up to the diameter of 700 mm without removing the crankshaft from the engine block.

**Inspection of Crankshaft by Latest UV Torch**

**Crankpin Grinding of Diesel Engine While Vessel is Sailing**

During and after the repairs, all the major technical parameters are checked and a calibration report is prepared. It is possible to execute the crankshaft grinding and crankshaft repair on board a vessel while it is sailing. Technicians have seaman passports and can travel to any part of the world in the shortest possible time, thus attending to the damaged engine in a short time. We are class-approved and stand to guarantee the satisfactory performance of the crankshaft after repairs.

**Crankpin Grinding and Crankpin Polishing is in Process**

We are commonly working on the following engines:

Wartsila, Daihatsu, Mirrless Blackstone, Yanmar, Allen, MAK, MAN, B&W, Sulzer, Caterpillar, Fiat, Mitsubishi, MTU, Cummins, Deutz, Nohab Polar, Wartsila 12V32, Wartsila 18V32, Pielstick, Bergen, Detroit Diesel, MaK 552 , MaK 453, MaK 451 AK, Niigata, MaK 452 AK, Ruston, Lister Blackstone K8 Major MK2, Volvo Penta, etc.

For more information on insitu crankshaft grinding repair, insitu crankshaft repair and grinding, onsite grinding machine supplier, and repair of crankshaft contact 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

**Onsite Crankshaft Grinding & Polishing Machine**

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.

Onsite Crankshaft Repair Services India by RA Power Solutions

RA Power Solutions offer onsite crankshaft repair services for the last four decades to the land-based engine and engines installed on vessels.

The crankshaft needs repair or grinding in case of the following defects:

Development of excessive taper and ovality more than the tolerances stipulated.
Loss of alignment of the crankshaft.
Seizure of bearing, development of line marks.
Development of pitting and rough surface of crankshaft main journal and crankpin

**Crankshaft Repair Services While Vessel is Sailing**

**Crankshaft Grinding Services- Power Plant**

The onsite repair services of crankshaft help in getting the engine back into operation in minimum time. Following crankshaft grinding services are offered by RA Power Solutions at Sea, on land, or in the shipyard:

Onsite Crankshaft Repair
Crankshaft Straightening
Onsite Crankshaft journal repair
Crankshaft Regrinding
Onsite Crankshaft polishing
Onsite Main bearing Regrinding
Onsite Crankshaft machining
Orbital crankpin machining/regrinding
Main bearing machining
Insitu Main bearing Main Journal Polishing

Crankshaft Grinding being done on a Small Crankpin Width — **Crankshaft Grinding is being done on a Small Crankpin Width**

**Crankpin After Grinding by Crankshaft Grinding Machine**

RA Power Solutions has technicians who are well-trained and have executed successfully more than 11,000 jobs of crankshaft repair. We are also considered to be the lowest-priced in the industry.

For any services related to crankshaft refurbishment, crankshaft grinding, crankpin polishing, onsite crankshaft grinding repairing service, crankshaft grinding and repair onsite, or maintenance and repair services, please free to write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.