RA Power Solutions introduced mobile in situ machining services to cut repair costs and save time by avoiding disassembly, removal, and transport of shafts to workshops. We machine all types of cylindrical shafts and crankshafts up to 700 mm in diameter. We maintain tolerances according to the manufacturer’s requirements.

Advantages of Mobile Machining of Cylindrical Shaft and Crankshaft Onsite:

1. We use advanced technology and processes for the machining of cylindrical shafts and crankshafts.
2. Onsite machining equipment is portable and can be taken all over the world by our technicians.
3. Customization of onsite machining tools is possible according to the specifications of the shaft and site requirements.
4. Crankshaft Grinding Mobile Services machining minimizes the downtime and cost of the repairs.
5. Mobile machining is of great advantage to the plants as we are available 24*7 and can fly to any part of the world on short notice.
6. All our technicians experienced and trained in our in-house training school.
7. We have 45 years of experience. We regularly provide mobile machining services to leading companies across the world.
8. We design mobile machining equipment to undertake machining of damaged crankshafts in main and auxiliary engines installed on vessels.
9. Mobile machining is also possible while sailing of the vessel.

For more information regarding crankshaft machining, cylindrical shaft machining, and Crankshaft Grinding Mobile Services, please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

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The advantages of undertaking onsite repair of the crankshaft are as follows:

1. No requirement for the removal of the crankshaft from the block.
2. Crankpin grinding is performed by inserting the portable crankshaft grinding machine through the engine’s inspection window.
3. The portable onsite crankshaft grinding machine is manufactured in two parts, which sit on the crankpin diameter.
4. The machine manufactured by RA Power Solutions is portable, lightweight, and can be carried anywhere in the world.
5. The onsite crankshaft grinding machine is designed to maintain close tolerance in terms of taper and ovality. It meets the standards set by leading engine manufacturers such as Daihatsu, Yanmar, MAK, MAN, and others.
6. The crankshaft grinding machine is designed to generate minimum vibrations while in operation. This facilitates the grinding of the crankpin even while the sailing of the vessel.
7. It is observed that due to a seizure of the bearing or an accident. The radius fillet of both ends gets damaged. The crankshaft grinding machine was developed and manufactured by RA Power Solutions. It can undertake the grinding even if the crankpin has damaged fillets.
8. The cost of the machine is low and is used by diesel power plants, shipping companies, engine repair workshops, etc.
9. Free training for the client’s technicians is provided in our in-house training school.

We have sold more than 10,000 machines all over the world including Australia, Bangladesh, Cambodia, Chinese Mainland, Hong Kong, Indonesia, Japan, Malaysia, Maldives, Myanmar, New Caledonia, New Zealand, Philippines, Singapore, South Korea, Sri Lanka, Thailand, Vietnam, Afghanistan, Bahrain, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, Syria, United Arab Emirates, Yemen, Singapore, etc.

For more details on insitu grinding crankpin, grinding a crankshaft, and grinding machine of crankpin, please email us at info@rapowersolutions.com, rajshahani@rapowersolutions.com, or call +91 9582647131, or +91 9810012383.

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Onsite Crankshaft Grinding Machine	Crankshaft grinding machine

We have designed and developed an onsite crankshaft grinding machine for the grinding of crankshafts onsite and have successfully carried out the grinding operation of crankshafts on-site in numerous locations without dismantling the crankshaft from the engine.Technicians use a single, simple-to-use crankshaft grinder machine for on-site grinding and polishing of crankshafts.
Our skilled experts provide on-the-job training for the operation and maintenance of the crankshaft grinding machine.

The main features of the crankshaft grinding machine are as follows:

• The crankshaft grinder is compact in design, and it can be carried to any site all over the world.
• There is no requirement of removing the crankshaft from the engine block. Our crankshaft grinding machine is so compact that technicians can insert it through the inspection window of the engine block.
• Grinding & polishing can be done by the same machine.
• In terms of tolerance, the machine is capable of maintaining the taper & ovality after grinding within 0.02 mm.
• Technicians can maintain a surface finish of less than 30 RA on the crankpin and main journal after grinding and polishing.
• Our present range of onsite crankshaft grinders is up to 700 mm in terms of diameter.

Crankshaft Grinding Machine manufactured by RA Power Solutions

Crankshaft Grinding and Polishing Machine for Diesel Engine Repair Workshop

The Portable Onsite Crankshaft Grinding Machine is ideal for main and auxiliary engines. It is also suitable for compressor repair workshops. With low investment, they can set up crankshaft grinding and polishing facilities.

The machine is designed in such a way that grinding & polishing are also possible while sailing the vessel.

For your requirement of crankshaft grinding machine, Portable Onsite Crankshaft Grinding Machine,insitu crankshaft grinding repair, and crankshaft grinders, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131, 9810012383.

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Having sold more than 70 Crankshaft grinding and polishing machines we are popularly known as crankshaft specialists.The machines sold by us world wide are used for Main & Auxiliary engines, Compressors, Locomotives, Earth moving & Marine applications.

RA Power Solutions designs, develops, and manufactures a complete range of crankshaft grinding and polishing machines, from a small diameter of 30 mm to a large diameter of 700 mm. These machines are used mainly for the repair of damaged or burned-out Crankshafts on site.

There is absolutely no requirement of removing the crankshaft from the block and sending it to the workshop when RA Power Solutions is called into help & support. In fact, after the introduction of this onsite crankshaft grinding machine by RA Power Solutions, a number of companies having large bench type crankshaft grinding machines,have had to shut down their operations.

Crankshaft Grinding Machine with the most advanced technology

With our experience in repairing more than ten thousand crankshafts successfully in the last four decades. We can design and produce crankshaft grinding machines with the most advanced mechanical solutions.

The crankshaft grinding machine manufactured by us is the most sophisticated machine available today in the market.

The movement, the control and the measurement is the combination of our experience and the material selected by us for the manufacturing of this machine.

Our concept and design is far ahead of the companies that are still using old technology. They undertaking the grinding of crankpin & main journal by taking the reference of radius fillet.

Structure of Crankshaft Grinding Machine:

The design of the machine and selection of raw material makes the machine suitable to grind large crankshafts having diameter upto 700 mm.

The main body of the equipment is manufactured out of Titanium steel which provides capability of grinding heavy crankshafts with large crank pins and main journal diameters.

The orbital system permits maintenance of the accuracy of the crankshaft geometry in terms of taper, ovality and surface finish.

Despite its strong structure, the crankshaft grinding machine is lightweight. This allows technicians to easily carry it to sites around the world.

Portable Crankshaft Grinding/ Polishing Machine	On-site crankshaft grinding machine

The key features of this technology are as follows:

1. CNC Orbital grinding technology.
2. Linear motor technology.
3. In process gauging.

Manufacturing Quality:

RA Power Solutions manufactures the main structure of the crankshaft grinding machine from titanium steel. This creates a thermally stabilized, strong structure.

The moving parts are manufactured by skilled operators and on CNC equipment. In order to secure the highest precision and tolerance for grinding & polishing.

It is our constant endeavour to improve the design of the machine and to maintain the following:

1. Reduce the vibration of the machine.
2. Keep the temperature constant and low.
3. Improvement in strength.
4. Control over the weight of the machine.
5. Keep the cost low.

For more information on crankshaft grinding machine and crankshaft grinders, contact us on rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131, +91 9810012383.

Crankshaft Grinding Machine ready for dispatch	Accessories used in the Crankshaft grinding machine

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We were approached by a shipping company based in Mumbai, India, to whom we have been extending on site crankshaft grinding and Onsite Crankshaft Repair services for the last 45 years.

They approached us about the problem in the crankshaft of the YANMAR Diesel Engine model 6N18AL-DV.

THE ENGINE DETAILS ARE AS FOLLOWING:-

ACTION TAKEN BY RA POWER SOLUTIONS FOR REPAIR OF CRANKSHAFT OF YANMAR DIESEL ENGINE 6N18AL-DV:-

• Two technicians with an onsite crankshaft grinding machine boarded the vessel, and the crankshaft was subject to inspection.
• All six crankpins were subject to calibration for taper and ovality.

THE DIMENSIONS WERE CHECKED AS PER RA POWER SOLUTIONS PROTOCOL, WHICH IS MENTIONED BELOW:-

STANDARD DIMENSION OF CRANK PIN – 145.00 MM

STANDARD /SPECIFIED NO.                                                                                        SIZES IN MM

                                                                             SIZE OF CR PINS

• We inspected the hardness of all crankpins. The readings ranged from 590 to 650 HB.
• We carried out an MPI test on the crank pins to detect cracks. The test showed no cracks.
• We checked the deflection of the crankshaft. The readings were within limits.

SUCCESSFUL REPAIR OF CRANKSHAFT OF YANMAR DIESEL ENGINE 6N18AL-DV:-

• We observed higher ovality ranging from 0.16 to 0.22 mm. Based on this, we decided to grind all the crank pins.
• We ground all the crankpins undersize by 0.40 mm as per the manufacturer’s recommendation. The final size ranged from 144.58 to 144.60 mm. We maintained a maximum ovality of 0.02 mm..

THE FINAL DIMENSIONS MAINTAINED AFTER GRINDING ARE MENTIONED BELOW:-

STANDARD DIMENSION – 145.00 MM

STANDARD /SPECIFIED NO.                                                                                        SIZES IN MM

                                                                             SIZE OF CR PINS

Precision Repair of Yanmar Diesel Engine Crankshafts

The small crankpin bearing width requires the latest crankshaft grinding equipment which is possessed by us and we have been executing successfully the repair of the crankshaft of YANMAR Diesel Engine 6N18AL-DV and other models having small bearing length all over the world.

In our 45 years of experience we have executed successfully repair of more than ten thousand Crankshafts.We strictly maintain all tolerances stipulated by the manufacturer.

We have been executing the repairs in Laos, Lebanon, Malaysia, Maldives, Mongolia, Nepal, North Korea, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Syria, United Arab Emirates, Yemen etc.

For more information on Onsite Crankshaft Repair, Yanmar Crankshaft Repair, onboard crankshaft repair, insitu machining equipment, crankpin journal repair, and ship crankshaft machining, contact us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91-9582647131 or +919810012383.

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Manufacturing of Crankshaft Grinding Machine, Crankshaft Repair Machine, and Crankshaft Grinder

RA Power Solutions has been working on the crankshafts of medium and high capacity engines for more than four decades. We realized that a few companies based in Europe have made these services a monopoly business, and projected crankshaft grinding and crankshaft repair as a difficult task. They also charged an exorbitant amount from the shipping companies, diesel power plants, and companies having rotator equipment. RA Power Solutions Pvt. Ltd. developed an onsite crankshaft grinding machine, which is capable of undertaking the grinding of the crankshaft onsite without the removal of the crankshaft from the engine block. The crankshaft grinding and crankshaft repair tools is possible by inserting the portable and light-weight machine from the inspection window. We are presently manufacturing crankshaft grinding and repair machines having a range from 35 mm to 700 mm, which largely covers most of the popular makes and models of engine crankshafts.

The crankshaft grinding machine has the following features:-

Crankshaft Grinding Machine, Crankshaft Repair Machine, and Crankshaft Grinder main features are:-

1. A lightweight, portable crankshaft grinding machine can be taken to any site all over the world.
2. We pack the machine in steel or wooden boxes. Clients can carry it by air as accompanied baggage.
3. Capable of undertaking crankpin and main journal grinding, maintaining tolerances within 0.02 mm in terms of taper and ovality.
4. Crankshaft grinding is capable of maintaining a high surface finish far superior to the international standards.
5. The machine is supplied completely in all respects, ready to use at the client’s premises.
6. Easy to maintain and operate.
7. The machine is supplied in two variants: electric/pneumatic drive.
8. We provide free training for operating the crankshaft grinding machine. Clients can receive the training at their premises or in our workshop.
9. The crankshaft repair machine costs significantly less than conventional bench-type machines available on the market. The traditional machines are now outdated.

Globally Services Provider: RA Power Solutions

More than 1000 machines are supplied. The utility of the crankshaft grinding machine is most useful during the time of the pandemic due to the spread of COVID-19 all over the world, there is a complete ban on travel all over the world. The wear and tear, accidents of engines does take place on vessels, diesel power plants, and industries, etc. The end user cannot wait for the air travel to start.

Two of our clients, one based in Guayaquil, Ecuador, and the other in Singapore—used RA Power Solutions’ onsite crankshaft grinding machine to repair damaged crankshafts. The client in Ecuador repaired the crankshaft of a Wartsila engine. The client in Singapore repaired the crankshaft of a Yanmar engine. Both clients avoided heavy losses by using our onsite crankshaft grinding machine. We strongly recommend using this machine, as upcoming times will be more challenging. It may not be possible to deploy technicians with machines for crankshaft repair on short notice.

Worldwide Services:

We are executing crankshaft grinding repair services in Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, the United Arab Emirates, Vietnam, the UK, the USA, Singapore and other countries.

For more information on crankshaft grinding repair, crankshaft repair tools, onsite crankshaft grinding repair, and engine crankshaft repair equipment, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or  +91 9810012383.

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1. Although manufacturers make crankshafts from forged steel, continuous running causes the crankpin and main journal to develop taper and ovality beyond the engine manufacturer’s limits. To remove excessive taper and ovality, we grind the crankshaft. If the ovality is minor, we polish the crankpin and main journal instead.
2. Bearing line marks, pitting, and rough surface is observed. The reason can be poor quality of lubricating oil used, non-replacement of lubricating oil filters on time, poor quality of bearings, etc. The crankshaft polishing is recommended in case the bearing line marks and pitting are observed.
3. Seizure of bearing on crankpin or main journal of the crankshaft is common. In some cases, bearing material embeds on the crankpin and main journal. We recommend grinding and polishing the crankshaft to remove the material. This process also controls taper, ovality, surface finish, and other parameters according to the engine manufacturer’s specifications.

Applications of the Crankshaft Grinding Machine

To address these crankshaft defects, we need a crankshaft grinder machine to grind and polish the crankpin and main journal. In the past, before today’s advanced technology, owners had no option but to disassemble the crankshaft, pack it, and send it to a designated workshop for repairs. In the case of large crankshafts, say 5 meters in length and above, even as of data, several countries don’t have facilities for bench-type crankshaft machining, as it needs heavy investment, highly skilled manpower.

RA Power Solutions has developed a portable, light-weight, easy-to-operate In Situ Crankshaft Grinding Machine having the following features:-

Introduction of a state-of-the-art Crankshaft Grinding Machine:

1. The onsite crankshaft grinding machine introduced by RA Power Solutions is a real-term technological innovation. It has an outdated, heavy-duty, bench-type crankshaft machining. Several manufacturers of crankshaft grinding machines in Italy, Germany, and other countries have closed down their crankshaft machining manufacturing facilities.
2. The machine’s mainframe is manufactured out of titanium alloy, which has the inbuilt property of absorbing vibrations. This is of great benefit as the grinding and polishing of crankpin machining and the main journal of the crankshaft is possible even while sailing the vessel.
3. The machine’s compact and lightweight design allows us to transport it to any site in the world by air as accompanied baggage. We kept the total weight to a minimum, making it easy to handle and reducing transportation costs.
4. The machine is designed and capable of achieving closed tolerances strictly as per the manufacturer’s recommendation. It can execute grinding and polishing of crankshafts of all engine manufacturers and can meet their stipulated parameters in terms of taper, ovality, surface finish, parallelism, etc.
5. The machine is operated either by a pneumatic turbine or an electric motor, depending on the customer’s choice.
6. Presently, the machine is available in the range from 35 mm to 700 mm.
7. Training and maintenance is an important part of our company sales policy. We extend training on dummy crankshafts in our workshop or even at the client’s premises.
8. The cost of equipment is of great importance in this time of recession, shipping and industries, in general, are going through.
9. The cost of the machine is negligible in comparison to the heavy-duty bench-type stationary crankshaft machining.
10. We have sold more than 70 machines worldwide. We also trained technicians to operate and maintain them.

Crankshaft Grinding Machine Exporter

Companies now prefer a portable crankshaft grinding machine that they can take to the site for repairs. Removing the crankshaft from the main equipment, packing it, and sending it to a workshop is neither practical nor financially feasible. This process is especially difficult for heavy-capacity engines installed on vessels or in diesel power plants.

The portable crankshaft grinding machine, which we can take to the site, has become a blessing for vessel owners and heavy engineering companies. Many of them lack crankshaft grinding and polishing services in their country. Previously, they had to send the crankshaft to another country or replace it with a new one at a high cost.

RA Power Solutions Pvt. Ltd. manufactures portable, lightweight, and easy-to-operate crankshaft grinding machines up to 700 mm. The onsite crankshaft grinding machine costs far less than conventional bench-type crankshaft machining available in the market.

Crankshaft Grinding Process

The machine is very handy and can be easily operated for the crankshaft grinding process.
We recommend the crankshaft grinding machine for onsite crankshaft reconditioning and polishing without removing it from the block. It can grind and polish any cylindrical shaft up to 700 mm in diameter, regardless of bearing length, which can reach 600 mm or more.

We are executing crankshaft grinding repair services in Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, United Arab Emirates, Vietnam, UK, USA and other countries.

For more information on crankshaft regrinding, engine crankshaft grinding machine, In Situ Crankshaft Grinding Machine,  grinding machine of crankpin, crankshaft machining and polishing contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or  +91 9810012383.

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