Crankshaft repair is undertaken by grinding of crank pin, grinding of main journal, straightening of crankshaft and all the problems related to crankshaft are successfully repaired.
Crankshaft grinding is undertaken by RA Power Solutions having four decades of experience in repair of crankshaft. We have technicians who are trained in our workshop giving them the job training for Grinding of crankshaft and repair of Crankshaft.
Crankshaft Grinding on Board a Vessel
We use latest design of crankshaft grinding equipment which is vibration free and is capable to maintain close tolerances in terms of taper and ovality. Crankshaft grinding and crankshaft polishing is done in one setting thus reducing the time of crankshaft repair considerably.
Crankshaft grinding and repair is also undertaken on board the vessel and while the vessel is sailing.
Crankshaft Grinding Machine- Vibration Free
Crankshaft Repair
If you are in need of on site crankshaft grinding and repair, on-site crankshaft repair, and crankshaft polishing, please contact RA Power today. We will be happy to answer any of your questions. Dial +91 9582647131 or +91 9810012383 and email info@rapowersolutions.com, rajshahani@rapowersolutions.com for more detail.
RA Power Solutions Pvt. Ltd. can easily undertake crankshaft repair on board a vessel while it is sailing by using special equipments.
We can undertake crankshaft repair up to the diameter of 700 mm while the vessel is sailing in high seas in anchorage or at berth. This result to considerable saving for ship repairs as no time is wasted for crankshaft repair as it does not require any anchorage or berth.
RA Power Solutions having 37 years of experience have executed more than 10,000 jobs of repair of crankshaft successfully which is a record.
Damaged Crankpin of MAN Marine Diesel Engine
Crack Detection by MPI Before Grinding
The crankshafts which have been even rejected by the manufacturers are successfully repaired by us using various process/special equipments which we are learned from our experience. All the repair of crankshaft executed by us is guaranteed for the satisfactory performance. The tolerances as stipulated in the manual are strictly maintained.
Most of our technicians have seaman book and they can sail to any part of the world.
Crack Detection of Crank Pin
Crankshaft Repair Under Process
For more details regarding in situ crankshaft grinding, crankshaft repair on board a vessel and onsite crankshaft repair please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
Insitu grinding of crankshaft and polishing is offered by RA Power Solutions Pvt. Ltd. for last more than 3 decades. Our experienced technicians reach a site in the minimum possible time with the In situ crankshaft grinding machine and undertake crankshaft repair without removing the crankshaft from the main engine.
Grinding of crankshaft
Crankshaft Grinding
The In situ crankshaft grinding is undertaken by a lightweight portable In situ crankshaft grinding machine which is operated pneumatically. The equipment is of the latest design and is capable to maintain a close tolerance within 20 to 30 microns in terms of taper and ovality.
Onsite crankshaft grinding can also be undertaken while the vessel is sailing. This is possible due to continuous research and development done by our engineers to minimize the vibrations while the vessel is sailing. Our technicians hold valid seamen books and can sail if required. The time required for repair that involves crank pin grinding and polishing of crankshaft is minimum due to the latest design of our crankshaft grinding equipment executed by experienced technicians.
We can undertake grinding and polishing of crankshafts up to 700 mm diameter and have executed more than 10,000 repairs in our 36 years of experience worldwide. RA Power Solutions specializes in providing top-notch crankshaft machining in situ services.
The author of this blog is Raj Shahani, Managing Director of RA Power Solutions Pvt. Ltd. He has been working on crankshafts for last more than 43 years. The author had his training with leading crankshaft manufacturers like CKD Skoda in Pilsener Czech Republic, Sidenor in Spain, National Forge in Germany, etc.
For more updates on in situ crankshaft grinding, on site crankshaft grinding, grinding of crankshaft, in situ crankshaft grinding repair, onsite crankshaft machining, and crankshaft machining in situ emailinfo@rapowersolutions.com, rajshahani@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.
For almost 43 years, we have provided on site crankshaft grinding services, on-site crankshaft repair, crankshaft reconditioning, crankpin reconditioning, and marine crankshaft repair. Our engineers have received training in crankshaft production facilities in Europe and the United States as well as crankshaft grinding services.
It is observed that due to seizure of bearing in most of the cases, crankshaft loses its alignment and develops bend. The alignment of crankshaft is important and it is maintained at the time of machining and grinding of crankshaft.
RA Power Solutions undertakes straightening of crankshaft onsite irrespective of the length of crankshaft, diameter of CR pin and main journal. The straightening of crankshaft is done by peening procedure for which our technicians are trained. Number of jobs has been successfully executed for straightening and onsite grinding of crankshaft.
Grinding of Crankshaft by Crankshaft Grinder
At RA Power, we specialize in precision Crankshaft Grinding, a critical process that restores the functionality and integrity of crankshafts for various industries, including automotive, marine, and industrial applications. Our state-of-the-art equipment and skilled technicians ensure the highest level of accuracy and surface finish, extending the life and performance of your crankshafts.
Our specialized team and advanced machinery ensure that your crankshafts are meticulously restored to their original specifications.
Grinding of Crankshaft on VBlock by Crankshaft Grinding Machine
Insitu Crankshaft Grinding Machine from Crankcase Window
RA Power Solutions has recently supplied a crankshaft grinding machine ranging from 220 to 260 mm in Diameter to a Bangladesh-based client. This is the first onsite crankshaft grinding machine to be sold in Bangladesh.
In situ Straightening of Crankshaft is undertaken by the pining process, this in situ Crankshaft Repair saves Crankshaft from rejection. Technicians are specially trained for on-site repair of Crankshaft.
For more information on crankshaft grindingservices, in situ crankshaft grinding machine, on site crankshaft grinding, crankshaft grinding machine, and insitu crankshaft polishing email us at info@rapowersolutions.com or rajshahani@rapowersolutions.com and call us at +91 9810012383,+91 9582647131.
RA Power Solutions Pvt. Ltd. have successfully executed crankshaft repair on board a vessel of Hyundai engine. The crankshaft repair companies based in Norway, Singapore, and UK were invited to execute the grinding operation on crankshaft bearings of which were seized due to lube oil pump failure. These companies were not able to execute the repairs due to non availability of compact portable tool which was required as the space available from the inspection window was less.
Hyundai Diesel Engine for Repair
Knowing the constraints of space, RA Power Solutions Pvt. Ltd. designed and manufactured a special-purpose crankshaft grinding machine which was inserted from the inspection window, and grinding of 6 nos. pins was successfully executed. The engine is performing satisfactorily.
The repair of crankshaft on site was possible because the crankshaft grinding machine designed by RA Power solutions was compact, lightweight and was manufactured according to the size of the window and space available in the crankcase of the engine. The technicians were able to maintain the tolerance after grinding within 20 microns against the stipulated tolerance of 30 microns in the manufacturers manual.
Repair of Crankshaft in Limited Space
Inspection for Crack Detection
CR Pin After Grinding
We have successfully done more than 10,000 jobs of crankshaft repair all over the world like Qatar, Dubai, Sudan, Indonesia, Singapore, South America, Malaysia, Jordan, Kenya, Maldives, Nigeria, Iran, Iraq, Oman, etc.
For more details on crankshaft repair, crankshaft grinding and polishing machine, diesel engine repair, or onsite crankshaft grinding contact us by email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
The hardness of crank pin and main journal of crankshaft is of great importance for the satisfactory performance of the crankshaft. In case of low RPM diesel engine, the crankshafts are not hardened and the hardness is achieved by the metallurgical properties. In case of high RPM engine, crankshafts are hardened. The most common process followed by the manufacturers of crankshaft grinding machine is to go for induction hardening.
Due to seizure of bearings, the temperature goes high and the hardness increases. The increase in hardness makes the crankshaft brittle resulting to the development of crack.
RA Power Solutions Pvt. Ltd. suggests that whenever seizure of bearings takes place it is important that crankshaft hardness is checked and presence of crack should also be checked either by dye penetrant process or Magnaflux.
In cases of this form of failure, it is typically seen that hardening occurs, which results in the development of hard spots and hard areas next to the soft sections, even up to the scale of 700 HB. According to the manufacturer’s specifications, the extraordinarily high increase in the crankpin journal hardness is not desirable so the crankshaft is heated up and annealed.
Onsite Crankshaft Grinding in a Power Plant
Crankpin After Repair by Crankshaft Grinding Machine
In order to reduce the hardness and bring it to the limits specified by the manufacturers, RA Power Solutions has undertaken the annealing process in-house and have also availed the services of leading well-known European companies offering annealing services.
Author is Managing Director of RA Power Solutions Pvt. Ltd. having almost four decades of hands on experience in providing consultancy, repair and supply of new and reconditioned crankshafts for high capacity diesel engine. More than 2000 crankshaft have been successfully repaired all over the world, some of which were even rejected by reputed engine manufacturers.
For more information on onsite crankshaft grinding, grinding of crankshaft, crankshaft repair of high-capacity diesel engine email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
Crankshaft grinding and polishing is an important activity which is required after running of engine for a long time as due wear and tear taper and ovality is created. Again in case of failure of bearing grinding and polishing of crankshaft is required. In olden times it was necessary to remove the crankshaft from the block and send it to the designated workshop for grinding and polishing of crankshaft.
Crankshaft Repair
The removal of crankshaft from the block involved disassembly of complete engine, packing, and transportation to the workshop resulting to high downtime and expensive. RA Power Solutions has developed, design, and manufactured on site crankshaft grinding machine which can undertake grinding of crank pins or journals up to the diameter of 700 mm. The machine is capable of maintaining the tolerance within 0.02 mm in terms of taper and ovality. It is very easy to operate and needs minimum training.
The machine is light in weight and can be taken to the site. The machine is in two parts and can be inserted in the engine block through the inspection window facilitating grinding of CR Pin without removal of crankshaft. The grinding and polishing is undertaken by same machine. RA Power Solutions suggest polishing and grinding if necessary the crankshaft whenever it is open for major overhauling. This will considerably enhance the life of crankshaft, bearing, and engine. The machine gets drive from a pneumatic turbine which is again lightweight. The drive is also given by a electrical motor where the air supply is not available. The assembly of the machine and its operation can be seen on a YouTube channel
RA Power Solutions has supplied more than 100 machines to the clients based all over the world who are more than satisfied with its performance, quality, and ease of operation. The crankshaft grinder is manufactured by us to cater to the crankshaft diameter ranging from 35 mm to 700 mm. All the parameters specifications and tolerances as required by the engine manufacturer are maintained after undertaking the crankshaft repair by the crankshaft grinder manufactured by RA Power Solutions.
For more information on crankshaft repair made easy, crankshaft grinding, crankshaft grinding and polishing, in situ crankshaft grinding machine, and repair of crankshaft email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
