Inspection, Grinding & Polishing of Crankpin is in Process
RA Power Solutions offers top-notch crankshaft grinding services that are second to none in the industry. With years of expertise & state-of-the-art equipment, we specialize in the precise grinding of crankshaft, ensuring optimal engine performance and longevity. Our team of experienced technicians is well-versed in handling a wide range of crankshafts, from small engines to large industrial ones.
Whether it’s repairing a damaged crankshaft or enhancing its surface finish for improved functionality, RA Power Solutions is a trusted partner for all your crankshaft grinding needs. Our commitment to quality and efficiency makes us a preferred choice for clients seeking reliable & cost-effective crankshaft grinding services.
When it comes to crankshaft grinding, RA Power Solutions stands out as a leader in the industry. We employ advanced grinding technology and a team of experienced professionals to deliver precision grinding solutions that meet the highest standards of quality and performance.
At RA Power Solutions, we offer comprehensive crankshaft grinding services to restore the functionality and performance of your engine’s crankshaft. With over 44 years of experience, our skilled technicians utilize state-of-the-art equipment and proven techniques to deliver high-quality results, ensuring your crankshaft meets the exact specifications required for optimal engine performance. For more information on crankshaft grinding, crankshaft grinding machine exporter, Insitu Crankshaft Grinding, On Site Crankshaft Grinding, Crankshaft Grinding Machine Supplier, Insitu Crankshaft Grinding Machine Supplier, and Onsite Crankshaft Grinding Machine Supplier, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.
RA Power Solutions have been working on high-capacity diesel engine overhaul, repair, and maintenance and grinding of crankshaft for the last 44 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 getting very often.
As we are aware that the crankshaft is the heart of the engine by means of connecting rod the crankshaft converts reciprocating motion to the liner movement which drives the engine. RA Power Solutions have 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 Serious Accident
The crankshaft 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. 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 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 situcrankshaft grinding machine used by RA Power Solutions technicians is capable of maintaining a surface finish of far less than 0.03 RA value.
The high surface finish value after grinding of crankpin and main journal diameter of the crankshaft enhances the life of connecting rod and main bearings considerably.
Inspection of Crankpin Before Repair & Grinding
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.
Machining of Crankshaft by In situ Crankshaft Grinding Machine
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.
Crankpin After Repair by In situ Crankshaft Grinding Machine
Grinding of Crankpin is in Process
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 crankshaft, and in situ crankshaft grinding.
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 bearing or any other major breakdown happens in the crankshaft.
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 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. is developed. Due to these abnormalities developed in the crankshaft, failure of bearing and crankshaft takes place. RA Power Solutions recommends that inspection procedures should be followed in order 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 on Board a Vessel
Checking of deflection of the crankshaft.
Positioning of crankshaft balancing weights. They should be tightened on 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.
Onsite 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 it has made 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 reconditioning, 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
Portable Crankshaft Grinding Machine
RA Power Solutions has been extending onsite crankshaft inspection, main journal grinding, and crankshaft repair services for the last 40 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, 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 Repair
Crankpin After Grinding & Polishing by Crankshaft Grinding Machine
RA Power Solutions undertakes crankshaft repair, crankshaft grinding, and polishing onsite all over the world. The company is extending 24/7 emergency service for repair of the crankshaft of main and auxiliary engines on board a vessel or land-based installations worldwide. We are having experience of 40 years 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 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.
Grinding of Crankshaft is in Process
The client has the definite advantage of awarding crankshaft repair, crankshaft grinding, and crankshaft machining work to us as we have carried out repair of over 10000 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.
The following procedure is adopted for successful repair of the crankshaft:
Calibrated and modern instruments are used to undertake preliminary inspection of the crankshaft as follows:
Dimensional inspection to check taper and ovality
Crack detection by MPI/ultrasound or dye penetrant
Hardness test
Surface test to check surface roughness
Inspection to check the straightness of the crankshaft
Lube oil and radius fillet profile check
Visual inspection
Inspection of Crankpin Before Grinding
Inspection of Crankpin on Board a Vessel
All the readings and observations are recorded in the inspection format, and onsite repair planning is done in consultation with our senior Engineer.
Grinding of Crankpin is in Process
After inspection, grinding, and repair of the crankshaft, the following parameters are achieved:
Taper and ovality of the crankpin and main journal after grinding and polishing can be achieved within 0.02 mm.
The lubrication oil hole and radius fillet profile can be given as per the original profile.
The presence of crack and hardness readings are taken and recorded.
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.
Inspection of Crankshaft After Grinding on Board a Vessel
Crankpin After Grinding
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 44 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.
Onsite Grinding & Repair of Crankpin is in Process
RA Power Solutions has now made it easy to undertake crankpin grinding, crankpin repair and crank pin polishing onsite in a short time with the lowest cost.
We undertake onsite crankpin repair, crankpin grinding and crankpin polishing of crankshaft diameter ranging from 30 mm to 700 mm. This is undertaken by lightweight, easy to operate and portable onsite crankshaft grinding machine which is taken to the site. We have team of experienced technicians having valid passport 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. Following procedure is generally followed for successful onsite crank pin repair of crankshaft:
Crack Detection Test of Crankpin
Initial dimensional inspection of crankpin is undertaken by calibrated measuring instruments for taper, ovality and other parameters.
Radius fillet, lubricating oil hole of crankpin is checked for any loss of profile and damage.
Crack detection test by high-intensity MPI torch is undertaken by level 3 qualified technicians.
Hardness check and other important parameters are checked and recorded.
After the initial inspection, in case required grinding and polishing of 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.
Inspection of Crankpin is in Process
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 delivers and maintains the tolerances after crankpin repair which is better than the international standards and the tolerances specified by the engine manufacturers. Our company is having 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
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 intermediate shaft/tail shaft
Grinding and polishing of crankshaft, turbine shaft, alternator shaft, pump shaft
Author is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in providing onsite repair services related to high capacity engines across the world. He has 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 free to write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
Crankshaft Repair does not require crankshaft to be removed from entablature. In recent past due to seizure of bearing or development of taper, ovality, loss of alignment of crankshaft it was necessary to remove the crankshaft from the engine block and send it to the designated workshop for crankshaft grinding and crankshaft repair.
Crankpin Repair
The introduction of lightweight, vibration-free crankshaft grinding equipment facilitates grinding of crankshaft, crankpin and crank main journal on the spot while the crankshaft is assembled in the engine block. There is no necessity of even decoupling of alternator and other accessories from the diesel engine. The portable crankshaft grinding machine is placed on the crankpin or crank main journal through the inspection window of the entablature and the grinding and polishing operation is done.
The crankshaft grinding machine is centre less, vibration free equipment which ensures that the centre line of the crankpin is maintained. The crankshaft grinding and crankshaft polishing is done in one setting.
Portable Crankshaft Grinder
The crankshaft grinding machine is manufactured by us of diameter ranging from 60 to 700 mm. The machine is simple and easy to operate. We also provide training at the customer’s site for the operation and maintenance of the crankshaft grinding machine.
Company has sold more than 65 crankshaft grinding machine all over the world which are performing satisfactory. The machines are priced low and are ideally suited for large engineering, shipping companies, repair workshops, etc.More then 10000 Crankshafts are successfully repaired by us which is a record.
Crankshaft repair is recommended in case of the following:
Development of excessive taper and ovality in crankpin journal and crank main journal.
Development of crack and increase in hardness due to failure of bearing.
Loss of Alignment of crankshaft
Development of deep bearing line marks, rough surface, pitting, etc.
Crankshaft repair is undertaken by rap by grinding of crankshaft onsite. Crank pin journal and main journal of crankshaft grinding are done of diameter ranging from 60 mm to 700 mm.
Crankshaft Grinding on Board a Vessel
We are cost-effective and have four decades of experience in crankshaft repair, crankshaft grinding, and diesel engine crankshaft repair.
RA Power Solutions: Your trusted partner for precision diesel engine crankshaft repair. We restore power and reliability to your engines, ensuring optimal performance and longevity. For more information regarding crankshaft repair, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
Reduce Cost And Breakdown Time By Onsite Repair Of Crankshaft
Onsite Crankshaft Grinding and Polishing Machine
The failure of the crankpin and main journal bearing causes serious damage to the crankshaft, which is as follows:
Development of excessive taper and ovality in Crankshaft, Crankpin, and Main Journal.
Development of crack
Abnormal increase and decrease in hardness
Loss of alignment of crankshaft, resulting in the increase in deflection readings.
Development of bearing line marks, pitting, local depression
Damage to radius fillet and lube oil profile
The onsite crankshaft grinding equipment developed and manufactured by us is capable of undertaking grinding and polishing of crankshaft in one setting. The tolerances after crankshaft repair are strictly maintained as per the manufacturer’s specifications.
Removal of Crankshaft from Engine Block
Repair of Crankshaft is in Process
We have a highly trained, skilled team of technicians who are deputed to the plant site or on a vessel in the minimum possible time. The process followed by us for the repair of the crankshaft is faster, more cost-effective, and more convenient. It of course avoids the removal of the crankshaft and transport to the workshop.
The repair of crankshaft executed by RA Power Solutions Pvt. Ltd is approved by leading inspection agencies including Lloyds, DNV, and many other inspecting agencies. For more information, please write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
