Onsite Crankshaft Grinding & Polishing by Revolutionary Portable Equipment – RA Power Solutions

Crankshaft journal and crankshaft crank pin diameter should be grind and polished to attain a surface finish of 15 microinches or better. Again, the maintenance of the taper and ovality of the crankpin and crankshaft main journal has to be within the limit recommended by the manufacturer. Generally, the limits are within 0.02 to 0.05 mm, depending on the diameter of the crankpin and main journal. Till few years back it was a monopoly of a few European companies undertaking onsite crankshaft grinding and crankshaft polishing jobs charging exorbitant prices from the shipping companies and the power plants who had no option but to get the job of onsite crankshaft grinding and crankshaft polishing done from them.

Portable Crankshaft Grinding Machine — **Onsite Crankshaft Grinding & Polishing Machine**

RA Power Solutions has been extending crankshaft grinding, crankshaft polishing, maintenance, and repair of high-capacity engines for the last forty years. Out of our experience, we have developed and manufacture onsite crankshaft grinding and crankshaft polishing machines having a range from 30 mm to 700 mm. The onsite crankshaft grinding machine has brought down the cost of repair of the crankshaft and has broken the monopoly of the European service providers. The onsite crankshaft grinding machine manufactured by RA Power Solutions has the following features:

The onsite crankshaft grinding and polishing machine is portable, lightweight, and can be easily taken to the site all over the world.
The crankshaft grinding & polishing machine is portable and can be inserted from the inspection window. The crankpin grinding and polishing can be done without removing the crankshaft from the engine block.
The machine is designed and manufactured as per the customer’s requirement. For example, We have supplied machines for the crankshaft having a small bearing width or limited space.

Vibration Less Crankshaft Grinding Machine

The crankshaft grinder machine is capable of maintaining the taper and ovality of the crankpin or main journal as per the tolerances stipulated. It can achieve even a close tolerance of 0.01 mm in terms of taper and ovality. A surface finish far better than the international standard is achievable.
The onsite crankshaft grinding and crankshaft polishing machine is easy to operate and maintain. Onsite training by our experienced technicians is provided.
The cost of the crankshaft grinding and crankshaft polishing machine is low and affordable.

We have sold more than 70 crankshaft grinding and crankshaft polishing machines all over the world to leading dry docks, shipping companies, diesel power plants, repair workshops, etc.

The author is Mr. Raj Shahani, Managing Director of the company. He has 44 years of experience in the grinding of crankshafts, polishing of crankshafts, and all services related to the repair of engines and supporting equipment. He has designed and developed the portable crankshaft grinding machine to save time and money.

Insitu Crankshaft Grinding Machine — **Crankshaft Grinding Machine Ready for Dispatch**

Onsite Grinding Machine for Small Diameter — **Onsite Grinding Machine for Small Diamete**r

We will be pleased to share more information regarding onsite crankshaft grinding machine, onsite crankshaft grinding and polishing machine, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

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

RA Power Solutions with an experience of forty years provide you with a team of experienced technicians who repair crankshaft onsite, overhaul and maintenance of diesel engine, metal stitching, grinding and polishing of crankshaft, and all the repair jobs related to the engine room on a vessel or land-based diesel power plants. We possess precision and the latest design of equipment to execute the repairs strictly as per international norms and maintain the tolerances stipulated by the manufacturer.

**Crankshaft Grinding & Polishing in Diesel Power Plant**

Crankpin Machining by Onsite Crankshaft Grinder

RA Power Solutions is the only company that designs its own tooling according to the space available at the site which helps us to grind and maintain the crankshaft tolerances as per the manufacturer’s specifications. The main advantage of onsite machining and onsite reconditioning of crankshaft is that there is no need for striping down the equipment which in most of the cases is not possible due to various restrictions.

RA Power Solutions being an Indian company execute the repair of the crankshaft on the lowest prices in comparison to the European companies who used to dictate their prices and conditions without compromising on quality.

The onsite crankshaft repair services are extended to all types of industries: petrochemical, offshore and mining, steel, cement and manufacturing plant, marine and sugar plants, etc. We are confident of our quality and have executed repairs of more than 10,000 crankshafts worldwide. We have saved many crankshafts from rejection. Clients can also avail of our consultancy services which after inspection of the crankshaft advise the various methods of repair of crankshaft on site.

**Inspection of Crankpin is in Process**

**Repair of Crankpin by Specialized Tooling due to Space Constraints**

We also provide services related to engine repair i.e. turbine shaft repair, alternator shaft repair, pump shaft repair, grinding and polishing of crankshaft, onsite machining, crankshaft machining, crankshaft grinding & polishing, propeller shaft repair, metal locking & metal stitching of engine block, rebabbitting of bearings, connecting rod repair, etc.

The author is Mr. Raj Shahani, Managing Director of RA Power Solutions Pvt. Ltd. He has 40 years of experience in working on large crankshafts and Diesel Engines.

For more information regarding the grinding and polishing of crankshaft, crankshaft polisher machine and crankshaft reconditioning please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

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**

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-four 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 CDC 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 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 crankshaft is of Great Importance and is maintained. The following checks are undertaken.

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 in accordance with manufacturer specifications.
A blueing 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 circumferences.
Free of hairline cracks: Journal or crank pin to be tested by means of Magnetic Particle crack detection method.
Free of Martensite: The microstructure is to be tested for edged areas of martensite structure will 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 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 sleeve is of great importance. Cylinder liners and cylinder sleeves manufactured and exported by RA Power Solutions have the OEM tolerances and standard. The cylinder liners are manufactured by centrifugal process and in-house machining maintaining the tolerances is done. The honing of cylinder liner is of great importance. The Chris Marine honing machines are used to maintain the criss cross pattern which is essentially required for retaining of 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 development of inhouse facilities. All cylinder liners and cylinder sleeves upto 1500 mm of length are centrifugally cast and machined inhouse 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 the countries like Dubai, Singapore, Saudi Arabia, Nigeria, Indonesia and Czech republic, etc.

CKD Skoda Cylinder Liners & Sleeves Manufacturer

We manufacture cylinder liners up to the 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 engine manufacturer. Thus, it results to considerable reduction in the cost.

The cylinder liners are exported all over the world. Each cylinder liner prior to dispatch is subject to dimensional inspection by 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 & Sleeves of MAN Diesel Engine

The production of SKL engines has been stopped by the manufacturers about two decades back. We maintain the stock of most of the critical and consumables SKL engine parts. We also maintain the stock of SKL engines that have been removed from the industry or vessels which 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 or +91 9810012383.

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.

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 more than 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:

The minimum and maximum diameter of the crankpin and main journal, taper, and ovality are 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 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 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 eEngines:

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, providing onsite repair and maintenance service to diesel engine power plants and the shipping industry understands 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 is having a facility to manufacture the cylinder liner up to the bore size of 600 mm and 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 manufacturers of the engine.

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**

**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.