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

RA Power Solutions has been working on high-capacity diesel engine overhaul, repair, and maintenance, and grinding of crankshafts for the last 45 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 becoming increasingly often.

As we are aware that the crankshaft is the heart of the engine. Using the connecting rod, the crankshaft converts reciprocating motion to linear movement, which drives the engine. RA Power Solutions has 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.
Crankpin After Accident
Crankpin After Accident
Crankpin After Serious Accident
Crankpin After Serious Accident

The crankshafts 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., an 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 the 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. The technicians are capable of maintaining a surface finish of far less than 0.03 RA value.
  • The high surface finish achieved after grinding the crankpin and main journal diameters significantly improves performance. It enhances the life of the connecting rod and main bearings.
Inspection of Crankpin Before Repair & Grinding
Inspection of Crankpin Before Repair & Grinding
Inspection of Crankpin is in Process
Inspection of Crankpin is in Process
  • 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.

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.

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 crankshafts, and in situ crankshaft grinding.

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

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

RA Power Solutions is based in New Delhi, India, undertaking crankshaft machining for the last 45 years. Crankshafts are repaired on site without removing them from the crankcase. In case of any damage to the crankshaft, crankpin, and leading journal, we can machine it and polish it to a standard undersize within the manufacturer’s specification and tolerances specified.

The main advantage of repairing a damaged crankshaft and crankpin journal onsite is the short repair timescale. It is also more cost-effective. There is no need to remove the crankshaft from the engine block, pack it, or send it to a workshop. Machining and polishing can be done directly on-site. At the same time, all the specifications and tolerances as per the engine manufacturer are maintained.

RA Power Solutions has a team of experienced engineers who can repair all types of defects in the crankshaft and make it reusable.

Our scope of work includes the following:

  1. Crankshaft, Crankpin Repair
  2. Crankshaft Journal Repair
  3. Crankshaft Repair
  4. Crankshaft Straightening
  5. Crankshaft Regrinding
  6. Crankshaft Polishing
  7. Crankpin Machining, Crankshaft Journal Machining

We can undertake the repair and polishing of crankshafts with diameters ranging from 35 mm to 700 mm. Our technicians can fly to any part of the world at short notice. As they carry with them the Indian CDC. The machining of the crankshaft, repair of spare parts, engine overhauling, and maintenance can also be undertaken while sailing the vessel.

Our portable, lightweight onsite crankshaft grinding machine is designed to generate minimum vibration. Thus, maintaining a high standard of quality in terms of surface finish, taper, and ovality. Since we offer repair of primary spares, maintenance, and overhauling of engines, spares, etc. We own one point of responsibility for the satisfactory performance of the engine in totality.

Onsite Crankshaft Repair by Portable Grinding Equipment
On-Site Crankshaft Repair by Portable Grinding Equipment

We are considered to be the cheapest in the market in comparison to the competitors based in Europe.

This blog is written by Mr. Raj Shahani (Managing Director of RA Power Solutions), who has more than forty years of experience in the field of crankpin machining, crankshaft journal machining, crankshaft grinders, polishing and grinding of crankshaft, etc. For more details on babbitt bearing, white metal bearing, crankshaft grinding services, engine block repair, main journal grinding, grinding of crankshaft, or crankshaft grinders, email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

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 the bearing or any other major breakdown happens in the crankshaft.

Repair of Crankpin on Board a Vessel
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 the 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., are developed. Due to these abnormalities developed in the crankshaft, failure of the bearing and the crankshaft takes place. RA Power Solutions recommends that inspection procedures be followed 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 is in Process
Inspection of Crankpin is in Process
Inspection of Crankpin on Board a Vessel
Inspection of Crankpin on Board a Vessel
  • Checking of deflection of the crankshaft.
  • Positioning of crankshaft balancing weights. They should be tightened to a 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.

On-site 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 has made it 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 reconditioner, 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
Repair of Crankshaft by Portable Crankshaft Grinding Machine
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 45 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, Crankshaft Grinding Machine Exporter, 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
Crankpin After Grinding & Polishing by Crankshaft Grinding Machine

In Situ Grinding Machine | In Situ Crankshaft Grinding and Polishing Machine – RA Power Solutions

In situ crankshaft grinding machine is an ideal solution for the repair of a damaged crankpin journal of a diesel engine without dismantling the crankshaft.

Benefits of In-Situ Grinding Machine:-

RA Power Solutions’ grinding technology and tools are not only user-friendly but are also capable of grinding the crankshaft to close dimensional tolerances and with geometric tolerance. These grinding tools are portable and can be easily carried by technicians to the site.

Insitu Crankshaft Grinding Machine
In Situ Crankshaft Grinding Machine

Main Accessories of In-Situ Grinding Machine supplied by RA Power Solutions:

  • In situ grinding machine (Complete Set)
  • Mother Bush
  • Bush
  • Pneumatic Motor with Adapter
  • Hand valve
  • Hose Pipe
  • Hanging Pipe (G.I)
  • Pneumatic Hand Grinder
  • Mops, Mounting Wheel & Rubber Base Wheel
  • Consumables and grinding media
  • Tool Box (Complete Set)
Crankshaft Grinding Machine Packed in a Steel Box for Dispatch
Crankshaft Grinding Machine Packed in a Steel Box for Dispatch
Accessories for Insitu Grinding Machine
Accessories for In Situ Grinding Machine

The measuring instrument used in the Job of grinding and polishing of crankshaft:-

  • Micrometer (Depending on the Crankshaft, Crank pin and main journal Diameter)
  • Micrometer 0-25 mm outside Ball Type Micrometer
  • Inside micrometer or bore gauge
  • Hardness Tester
  • Deflection Gauge
  • Magnetic Dial Stand with Dial Gauge
  • DP Test Kit or MPI Test Machine
  • Radius Gauge
  • Filler Gauge
Portable Crankshaft Grinding Machine is Ready for Dispatch
Insitu Crankshaft Grinding Machine
In Situ Crankshaft Grinding Machine

Instructions for using the onsite crankshaft and cylindrical Grinding Machine:-

Inspection:

  • Check CR Pin Size, Hardness, DP Test, or Magnetic Particle Test, and
  • Deflection, in case all reports are good after that, take the Second Step.
  • Dismantle the machine and check all spare parts, assemble the Pneumatic Motor in the insitu grinding machine.
  • Assemble the hardware in the shell, assemble the machine on the crank pin, and rotate the gear manually.
  • Assemble the machine’s upper and lower caps and recheck all bolts.
  • Connect the Air Hose Pipe to the Pneumatic Motor.
  • After the machining process first round is complete, dismantle the in situ grinding machine and check the size of the Crank Pin.
  • Follow the same steps to complete the job.
  • Before maintaining the final size, check hardness, MPI, or DP Test & take Maximum Reading by Micrometer.

Note: Before the final size check, reset the outside micrometer and take the dimensions again.

Maintenance & Cleaning:-

To properly maintain machine tools, it is very important to perform maintenance checks periodically on all accessories. The author is Mr. Raj Shahani, Managing Director of the company. He has forty-five years of experience in providing on-site engine repair services to companies all over the world. After extensive research and field trials, he has developed an in situ crankshaft grinding and polishing machine to make the repair process easy and cost-effective.

For any information on in situ crankshaft grinding machine, in situ crankshaft grinding repair in fertilizer plant, onsite crankshaft grinding services, onsite crankshaft grinding, grinding and polishing of crankpin, in situ onsite crankshaft grinding in Oman, crankpin machining, crankpin repair, in situ crankshaft grinding please feel free to write to us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Reconditioning | Crankpin Reconditioning and Machining | Onsite Crankshaft Grinding & Polishing – RA Power Solutions

RA Power Solutions is a pioneering name in the realm of onsite machining services. With a commitment to precision and excellence, they offer a comprehensive suite of solutions aimed at addressing complex machining challenges without the need for equipment dismantling.

RA Power Solutions undertakes complete reconditioning of the crankshaft of marine engines, diesel generating sets, compressors, forging hammers, and all other applications. The crankshaft repair is undertaken onsite without removing the crankshaft from the crank casing. This saves the downtime of the equipment and the cost of assembly of the engine after the crankshaft repairs are executed. Companies are opting for on-site repair of the crankshaft, and sending the crankshaft to the workshop for repair is outdated. 

Grinding & Repair of Crankpin on Board a Vessel
Grinding & Repair of Crankpin on Board a Vessel

The following procedure is adopted by our experienced engineers for calibration:

Before starting the repair of the crankshaft, crank pin, and main journals is subject to the following inspection:

  1. Crankpin and main journal are measured for the presence of taper and ovality.
  2. The alignment of the crankshaft is checked by deflection.
  3. Radius fillets and lubricating oil holes are inspected for their original profile.
  4. Inspection of hardness
  5. Crack detection by MPI/Ultrasound and dye penetrant test.
  6. Checking of surface finish
  7. Visual inspection of the counterweight and counterweight bolts. In case of an accident, crack detection by MPI is recommended.
Inspection of Crankpin is in Process
Inspection of Crankpin is in Process
Inspection of Crankpin Before Grinding
Inspection of Crankpin Before Grinding

Based on the above observations, the crankshaft is repaired onsite, maintaining the following parameters:

  1. The grinding of the crankpin and the main journal is undertaken as per the undersize recommended by the manufacturers and the availability of the bearings with the engine manufacturers.
  2. Preparation of radius fillet, lubricating oil hole, and maintenance of profile as the original.
  3. Polishing the crank pin and main journal, maintaining the surface finish as per international standards.
  4. Checking of hardness and crack detection test after repairs are executed.

We have a team of experienced technicians and the necessary instrumentation to undertake the repair of the crankshaft on board a vessel, even while sailing or for stationary engines.

All the crankshaft repairs, onsite crankshaft inspection, and onsite machining services undertaken by RA Power Solutions are guaranteed to provide satisfactory performance.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He has 45 years of experience in providing services related to engine repair and overhauling, crankshaft grinding and polishing, crankpin reconditioning, and many more.

For any queries regarding crankshaft grinding for industrial and marine applications, crankshaft regrinding and compressor large engine, crank grinding, main journal crankshaft grinding, crankshaft grinding machine manufacturer, on-site grinding, onsite machining, onsite crankshaft grinding, onsite crankshaft inspection, and onsite machining services, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131,+91 9810012383.

Grinding & Repair of Crankpin
Repair of Crankshaft by Portable Crankshaft Grinding Machine
Crankshaft Radius Under Machining
Crankshaft Radius Under Machining

Crankshaft Grinding And 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. 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-five years of experience in this field. We have added a portable, onsite crankshaft grinding and polishing machine. It can undertake crankshaft grinding and polishing without taking the reference of the radius fillet of the crankpin or crank main journal. This helps in saving the crankshaft from rejection.

Inspection of Crankpin on Board a Vessel
Inspection of Crankpin on Board a Vessel
Inspection of Crankpins is in Process
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 repair is entrusted to the company. That has experience in repairing the crankshaft successfully. With experience of four decades in this field, and having successfully repaired more than 10,000 crankshafts. We are considered to be leaders in this field and are trusted by shipping companies and engine manufacturers. The repair of crankshafts is 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 to provide satisfactory performance.

Onsite Crankshaft Grinding Machine
Onsite Crankshaft Grinding Machine

Our crankshaft grinding services have the following features:

  • On-site machining, grinding, and polishing of crankpins up to 700 mm.
  • On-site machining, grinding, and polishing of all cylindrical shafts, including turbine, alternator, pump shafts, and tail shaft, up to a diameter of 700 mm.
  • Repair of radius fillet by grinding and polishing.
  • A portable pneumatically lightweight crankshaft grinding machine that can be taken to any site all over the world.
  • All technicians with a valid CDC can sail on the vessel.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He has 45 years of experience in providing services related to engine repair and overhauling, crankpin reconditioning, crankshaft repair, and many more.

For more information regarding Crankshaft Grinding Machine For Engine Repair, Insitu Crankshaft Grinding Repair Service, Onsite Crankshaft Repair And Grinding, Insitu Crankshaft Repair And Grinding, Crankshaft Grinding For Marine Equipment, Onsite Crankshaft Grinding Services, Insitu Crankshaft Grinding Services, Crankshaft Grinding And Repair Services, In Situ Crankshaft Grinding And Repair . Contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383

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

RA Power Solutions undertakes crankshaft repair, crankshaft grinding, and polishing on-site all over the world. The company is extending 24/7 emergency service for the repair of the crankshaft of main and auxiliary engines on board a vessel or land-based installations worldwide. We are having experience 45 years of experience 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 an 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.

The client has the definite advantage of awarding crankshaft repair, crankshaft grinding, and crankshaft machining work to us, as we have carried out the repair of over 10,000 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.

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

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

  • Calibrated and modern instruments are used to undertake a 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
  • 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 cracks and hardness readings is 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.

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 45 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.

Crankpin Reconditioning | Crankpin Polishing and Onsite Crank Pin Repair – RA Power Solutions

RA Power Solutions has now made it easy to undertake crankpin grinding, crankpin repair, and crankpin polishing onsite in a short time with the lowest cost.

We undertake onsite crankpin repair, crankpin grinding, and crankpin polishing of crankshaft diameters ranging from 30 mm to 700 mm. This is undertaken by a lightweight, easy-to-operate, and portable onsite crankshaft grinding machine, which is taken to the site. We have a team of experienced technicians having valid passports and CDC. They can travel to any destination in the world in the shortest possible time with portable crankshaft grinding equipment and can also undertake repairs while sailing of vessel.

The following procedure is generally followed for successful onsite crank pin repair of the crankshaft:

Crack Detection Test of Crankpin
Crack Detection Test of Crankpin
  1. Initial dimensional inspection of the crankpin is undertaken by calibrated measuring instruments for taper, ovality, and other parameters.
  2. The radius fillet, lubricating oil hole of crankpin, is checked for any loss of profile and damage.
  3. Crack detection test by high-intensity MPI torch is undertaken by level 3 qualified technicians.
  4. Hardness check and other important parameters are checked and recorded.

After the initial inspection, in case required grinding and polishing of the crankpin is undertaken, to maintain the tolerances strictly as per the manufacturer’s specifications.

The onsite crankshaft grinding machine used by RA Power Solutions engineers for grinding and polishing of crankpin and crankpin repair is self-designed and is improved from time to time.

Inpection of Crankpin is in Process
Inspection of Crankpin is in Process
Onsite Inspection of Crankpin Before Grinding & Polishing
Onsite Inspection of Crankpin Before Grinding & Polishing

The combination of skilled technicians and the most modern onsite crankshaft grinding machine is used for crankpin grinding, delivering and maintaining the tolerances after crankpin repair, which is better than the international standards and the tolerances specified by the engine manufacturers. Our company has more than four decades of experience in successful repairs of the crankshaft of high-capacity engines used for power generation, shipping, etc.

Grinding & Polishing of Crankpin on Board a Vessel
Grinding & Polishing of Crankpin on Board a Vessel

RA Power Solutions also provides the following onsite repair services:

  • Machining and grinding of crankpin journals up to 700 mm diameter.
  • Grinding of main journals
  • Machining and grinding of crankpin fillets
  • Grinding and Machining of main journal fillets
  • Machining and grinding of the intermediate shaft/tail shaft
  • Grinding and polishing of crankshaft, turbine shaft, alternator shaft, and pump shaft
  • Metal stitching/metal locking of the damaged casting
  • Overhauling and repair of the engine.
  • Rebabbitting of old white metal bearings
Repair & Overhauling of Engine
Repair & Overhauling of Engine
Repair of Intermediate Shaft
Repair of Intermediate Shaft

The author is Mr. Raj Shahani, the company’s managing director. He has 45 years of experience providing on-site repair services related to high-capacity engines worldwide. He designed and developed the portable crankshaft grinding machine to save time and money.

For more information regarding grinding of crankshaft, onsite crank pin repair, onsite repair services, and crankpin repair, please feel free to write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

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

Crankshaft journal and crankshaft crank pin diameter should be ground 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. A 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-five years. Out on our experience, we have developed and manufactured 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 requirements. For example, we have supplied machines for the crankshaft having a small bearing width or limited space.
Vibration Less Crankshaft Grinding Machine
Vibration-Less Crankshaft Grinding Machine
  • The crankshaft grinder machine is capable of maintaining the taper and ovality of the crankpin or main journal according to the stipulated tolerances. It can achieve 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. On-site training by our experienced technicians is provided.
  • The cost of the crankshaft grinding and crankshaft polishing machine is low and affordable.
Onsite Crankshaft Grinder
Onsite Crankshaft Grinder

We have sold more than 200 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 45 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
On Site Grinding Machine for Small Diameter

We will be pleased to share more information regarding the crankshaft grinding machine and, 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-five years, provides you with a team of experienced technicians who repair crankshafts onsite, overhaul and maintenance of diesel engines, perform 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
Crankshaft Grinding & Polishing in Diesel Power Plant
Crankpin Machining by Onsite Crankshaft Grinder
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 the crankshaft is that there is no need for stripping down the equipment, which in most cases is not possible due to various restrictions.

RA Power Solutions, being an Indian company, executes the repair of the crankshaft at 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 on the various methods of repair of the crankshaft on site.

Inspection of Crankpin is in Process
Inspection of Crankpin is in Process
Repair of Crankpin by Specialized Tooling due to Space Constraint
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 45 years of experience working on large crankshafts and Diesel Engines.

For more information regarding the grinding and polishing of crankshafts, 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.

Repair of Crankpin is in Process
Repair of Crankpin is in Process