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

RA Power Solutions is recognized as a leader in providing on site repair of crankshafts worldwide, with forty-five years of experience in this field. The company’s endeavor is always to save crankshafts from rejection.

The crankshaft was involved in a serious accident and was even rejected by the European Repair Companies attended by RA Power Solutions, but it was successfully repaired. This is possible because of having technicians who have hands-on experience in repairing more than twenty thousand crankshafts.

All crankshafts are initially checked and inspected to ensure that they are acceptable for reuse or 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, it reduces the breakdown time of the equipment considerably.

Onsite Crankshaft Repair
Onsite Crankshaft Repair
Repair of Crankshaft MAN B&W
Repair of Crankshaft MAN B&W

Presently, we are undertaking crank-pin and main journal grinding and repair up to 700 mm. They 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. A few of them are as follows-

Offshore Grinding of Crankshaft is in Process
Offshore Grinding of Crankshaft 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-five years of experience in crankshaft reconditioning of large marine engines and engines installed in Power plants.

Diesel Engine Ready for Grinding & Repair
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 covers 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 and Onsite Crankshaft Machining, Crankshaft misguides the end user, resulting in serious breakdown and considerably higher expense.

Onsite Grinding of Crankpin by RA Power Solutions
Onsite Grinding of Crankpin by RA Power Solutions

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

Crankpin Before Grinding
Crankpin Before Grinding

The above suggestions are given for the reconditioning of the 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 the Crankshaft successfully.

For more information about Onsite Crankshaft Machining, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383

Grinding of Crankpin by Onsite Crankshaft Grinding Machine
Grinding of Crankpin by Onsite Crankshaft Grinding Machine
Crankpin After Onsite Grinding & Repair
Crankpin After Onsite Grinding & Repair

Onsite Crankshaft Repair | Crankshaft Grinding | Crankshaft Reconditioning- RA Power Solutions

Onsite crankshaft Repair, Crankshaft Grinding, and Crankshaft Reconditioning have been undertaken by RA Power Solutions for the last forty-five years. The company has technicians who are trained to undertake onsite crankshaft repairs strictly as per the manufacturer’s specifications stipulated in the manual.

All technicians have valid CDCs and can travel on short notice anywhere in the world to board the vessel. The onsite crankshaft repair and onsite crankshaft grinding equipment used by RA Power Solutions has a main structure manufactured out of Titanium steel, which results in the absorption of Vibration while the onsite crankshaft grinding machine is in operation in high seas with turbulence. The quality after the reconditioning and repair of the crankshaft is of Great Importance and is maintained. The following checks are undertaken.

Repair of MAN Engine is in Process
Repair of the MAN Engine is in Process

Quality of a Re-Machined Pin or Journal

The quality of a pin or journal after machining has to meet the following requirements:

  • Geometrical tolerance by manufacturer specifications.
  • A bluing check has to be carried out on the re-machining surface. Blueing Shells: Min. Width is equivalent to Journal or Crankpin dimensions, respectively. Min. Length is equivalent to 1/5 of the Journal or crank-pin circumference.
  • Required contact area: Min 35% equally distributed over width and circumference.
  • Free of hairline cracks: Journal or crank pin to be tested through the magnetic Particle crack detection method.
  • Free of Martensite: The microstructure is to be tested for edged areas of martensite structure, using replicas or micro etching with 5% nitric acid in alcohol (Nital) applied to the pin after polishing.
  • The maximum admissible hardness of remaining local hardsports: However, such local hardsports are not tolerated around the fillets and the bores for lubrication.
Onsite Grinding & Repair of Crankpin is in Process
Onsite Grinding & Repair of Crankpin is in Process
Onsite Repair & Grinding of Crankshaft
Onsite Repair & Grinding of Crankshaft

For more information about onsite crankshaft repair and grinding, crankshaft grinding, onsite crankpin grinding, etc. Please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Cylinder Liners | Cylinder Sleeves | Marine & Diesel Engine

The quality of cylinder liners and cylinder sleeves is of great importance. Cylinder liners and cylinder sleeves manufactured and exported by RA Power Solutions adhere to OEM tolerances and standards. The cylinder liners are manufactured by the centrifugal process, and in-house machining, maintaining the tolerances is done. The honing of the cylinder liner is of great importance. The Chris Marine honing machines are used to maintain the crisscross pattern, which is essentially required for retaining oil.

Well-known and Reliable Cylinder Liners and Cylinder Sleeves Manufacturer

RA Power Solutions is a leading Indian manufacturer, supplier, and exporter of cylinder liners and cylinder sleeves. The cylinder liners and cylinder sleeves manufactured by us are the outcome of our four decades of manufacturing expertise and the development of in-house facilities. All cylinder liners and cylinder sleeves up to 1500 mm of length are centrifugally cast and machined in-house to maintain the tolerances and finish of OEM quality and international standards. The cylinder liners and cylinder sleeves of high-capacity popular make and model of diesel engine are available in stock. We develop and manufacture cylinder liners and cylinder sleeves as per the drawing or sample submitted by the client. The liners are regularly exported to countries like Dubai, Singapore, Saudi Arabia, Nigeria, Indonesia, and the Czech Republic, etc.

CKD Skoda Cylinder Liners & Sleeves Manufacturer
CKD Skoda Cylinder Liners & Sleeves Manufacturer

We manufacture cylinder liners up to a length of 1500 mm irrespective of their material composition and design. The cylinder liners and cylinder sleeves for all popular makes of engine and their models are available ex-stock. RA Power Solutions also manufactures cylinder liners according to the sample or the manufacturing drawing provided by the user. Cylinder liners and cylinder sleeves for various applications, including compressors, forging hammers, are manufactured. The cost of cylinder liners is low in comparison to liners supplied by the engine manufacturer. Thus, it results in a considerable reduction in the cost.

The cylinder liners are exported all over the world. Each cylinder liner, before dispatch, is subject to dimensional inspection by the quality control department. The inspection reports are shared with the client. We stand guarantee for the satisfactory performance of liners for the period of 18 months from the date of dispatch or 6000 hours of operation, whichever is earlier.

Cylinder Liners Manufactured for Marine Engine
Cylinder Liners Manufactured for Marine Engine
Cylinder Liners & Sleeves of MAN Diesel Engine
Cylinder Liners & Sleeves of MAN Diesel Engine

The production of SKL engines was stopped by the manufacturers about two decades ago. We maintain the stock of most of the critical and consumable SKL engine parts. We also maintain the stock of SKL engines that have been removed from the industry or vessels that are not in operation. We are the largest manufacturer of SKL engine cylinder liners and sleeves, bearings, etc, and most of these parts are available in stock.

For more information on cylinder liner manufacturer, exporter and supplier, cylinder sleeves manufacturer, cylinder liners exporter, cylinder liner and sleeves, please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131

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 are developed in the crankpin and the crankshaft main journal.

Damaged Crankpin of Engine
Damaged Crankpin of Engine
Inspection of Engine Before Grinding
Inspection of the 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, has developed a portable, lightweight engine crankshaft grinding machine and an onsite crankshaft grinding machine, which can be taken to the site as accompanying baggage. The onsite crankshaft grinding machine has the following features:

  • Lightweight can be carried to the site easily.
  • The portable nature of the onsite crankshaft grinding machine facilitates its insertion from the inspection window and allows for grinding and polishing of the crankpin.
  • The machine is designed 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.
  • The onsite crankshaft grinding machine is easy to operate
  • On-site training is provided for the smooth running of the crankshaft grinding machine.
  • More than 70 machines have been sold all over the world and are 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
Inspection of Connecting Rod on Board a Vessel
Inspection of Engine is in Process
Inspection of the Engine is in Process

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.

Grinding of Crankpin is in Process
Grinding of Crankpin is in Process
Crankpin After Grinding
Crankpin After Grinding

Crankshaft Machining | Crankshaft Grinding | Crankshaft Polishing | 45 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 and expensive process, and engine manufacturers should 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
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
Onsite Crankshaft Grinding & Polishing Machine
Crankshaft Grinding Machine- Grinding Crankpin
Crankshaft Grinding Machine- Grinding Crankpin

The jobs of crankpin and main journal repair of the 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 requirements 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.
Damaged Crankpin Before Grinding
Damaged Crankpin Before Grinding
Finished Crankpin After Grinding
Finished Crankpin After Grinding

Advantages 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’s passports by technicians enables 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. It 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.
Grinding of Crankpin is in Process

All the services required for the repair of the engine and to put it back into operation. These 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.

Crankpin Grinding | Crankpin Repair By Insitu Crankshaft Grinding Machine – RA Power Solutions

Crankpin grinding and crankpin repair by an in situ crankshaft grinding machine are offered by RA Power Solutions through a highly motivated team of technicians with over four decades of experience in crankshaft grinding and crankshaft repair. The crankshaft must be initially inspected by experienced technicians to detect any faults. That may have occurred after damage or an accident.

Damaged Crankpin of Yanmar Engine
Damaged Crankpin of Yanmar Engine
Inspection of Crankpin Under Process
Inspection of Crankpin Under Process

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

  • The minimum and maximum diameters of the crankpin and main journal, taper, and ovality are checked.
  • Run out of the main journal, and deflection readings are taken to verify the loss of alignment.
  • A complete non-destructive test using MPI and an ultraviolet lamp for heat cracks is undertaken of the 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. It is placed on the damaged crankshaft from the inspection window of the engine block. There is no requirement to remove the crankshaft from the Entablature and send it to the workshop, as bench-type grinders are now outdated.

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

Inspection of Crankshaft by Latest UV Torch
Inspection of Crankshaft by Latest UV Torch
Crankpin Grinding of Diesel Engine While Vessel is Sailing
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
Crankpin Grinding and Crankpin Polishing is in Process
Crankshaft Radius Under Machining
Crankshaft Radius Under Machining

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.

Cylinder Liner and Cylinder Sleeves Suppliers and Exporters

 RA Power Solutions is an ISO-certified company. We are the leading manufacturer and exporter of cylinder liners and cylinder sleeves, mainly for high-capacity diesel engines. A company having four decades of experience in manufacturing engine components. We provide onsite repair and maintenance services to diesel engine power plants and the shipping industry. They understand the importance of cylinder liners.

CKD SKODA Cylinder Liner Developed with the help of Drawing
CKD SKODA Cylinder Liner

We have highly experienced and skilled employees who are technically qualified to produce the highest quality cylinder liners and cylinder sleeves. We provide the following cylinder liner:

  • Cylinder Liner For Pump
  • Diesel Engine Cylinder Liner
  • Main Engine Cylinder Liner
  • Diesel Engine Cylinder Liner
  • Cast Iron Engine Cylinder Liner
  • Engine Cylinder Liner

The cylinder liners are manufactured by centrifugal casting machines and automatic shell molding with a core shooter machine. The company has a facility to manufacture the cylinder liner up to the bore size of 600 mm and a length of 1300 mm. The machine shop is equipped with the latest CNC machines, which are supported by in-house quality control equipment like a roughness tester, inspection gauges, spectrometer, etc. Our quality assurance team helps us to maintain the international standard of quality as per the manufacturer of the engine.

MAK Engine Cylinder Liner
MAK Engine Cylinder Liner

CKD Skoda (All models of Engine), Ruston, Allen, B&W, DAIHATSU, MAN, Mirrlees Blackstone, Niigata, Caterpillar, Deutz, Wartsila, Sulzer, Yanmar, Bergen, Mitsubishi and Cummins etc. We export cylinder liners to various countries like South America, the UK, Nigeria, Indonesia, Singapore, Qatar, Dubai, etc.

Wartsila Cylinder Liner Manufacturer
Wartsila Cylinder Liner Manufacturer
Cylinder Liners of Wartsila Engine Exported to Power Plant
Cylinder Liners of Wartsila Engine Exported to Power Plant

For more information on cracked cylinder liner repair, aluminium cylinder liner manufacturer, cylinder liner installation, cylinder head liner, and cylinder liners exporter, please contact us today 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
Onsite Crankshaft Grinding While Vessel is on Move

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

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


Crankshaft grinding equipment, maintaining the crankpin and main journal tolerances as per the manufacturer’s specifications.

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

  1. A company having 45 years of experience in the repair of crankshafts can easily detect the damage caused to the crankshaft due to an accident.
  2. We are experts in salvaging the crankshafts, which, as per the manufacturer, are rejected. This is possible due to our vast experience, knowledge, and use of the latest technological equipment.
  3. A large team of experienced technicians has a valid passport and seaman’s book and can travel all over the world on the shortest possible notice.
  4. In the field of crankshaft repair, we are the leaders, most experienced, sincere, and trustworthy.
  5. The services provided are at the lowest rates and can be compared with other companies.
  6. The only company to have executed more than 11,000 jobs of crankshaft repair and engine overhaul maintenance worldwide.
  7. All the repair services related to high-capacity diesel generating sets are offered with a guarantee.
Inspection of Crankpin is in Process
Inspection of Crankpin is in Process

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

For more information regarding grinding of crankpin and main journal, crankpin repair, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Onsite Crankshaft Repair Services India by RA Power Solutions

RA Power Solutions has offered 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 the crankshaft main journal and crankpin
Crankshaft Repair Services While Vessel is Sailing
Crankshaft Repair Services While the Vessel is Sailing
Crankshaft Grinding Services- Power Plant
Crankshaft Grinding Services- Power Plant

The onsite repair services of the crankshaft help in getting the engine back into operation in the 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
  • On-site crankshaft journal repair
  • Crankshaft Regrinding
  • On-site crankshaft polishing
  • Onsite Main bearing Regrinding
  • On-site 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
Crankpin After Grinding by Crankshaft Grinding Machine

RA Power Solutions has technicians who are well-trained and have successfully executed 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 and repairing service, or maintenance and repair services, please feel free to write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.