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 services, 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.
For more information on crankshaft grinding, crankshaft grinding machine exporter, crankshaft grinding for industrial and marine application, engine crankshaft grinding machine, or crankshaft grinding machine, 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 more than 40 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 undertake crankshaft repair, crankshaft grinding and polishing onsite all over the world. The company is extending 24/7 emergency service for repair of crankshaft of main and auxiliary engines on board a vessel or for the 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 a most knowledgeable company in the world. Our response time in case of emergency is unbeatable. We have developed 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 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 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 crankshaft, the following parameters are achieved:
Taper and ovality of crankpin and main journal after grinding and polishing can be achieved within 0.02 mm.
Lubrication oil hole and radius fillet profile can be given as per the original profile.
Presence of crack and hardness readings are taken and recorded.
Straightness and runout are maintained as per the manufacturer’s specifications. Surface finish of less than 20 RA value 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 is having 40 years of experience in providing engine repair services all over the world.
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.
Crankpin grinding, and crankpin repair by in situ crankshaft grinding machine is offered by RA Power Solutions through a highly motivated team of technicians who have the experience of four decades in crankshaft grinding and crankshaft repair. It is important that the crankshaft is initially inspected by experienced technicians in order to detect the fault after the damage or accident.
Damaged Crankpin of Yanmar Engine
Inspection of Crankpin Under Process
The following are the major parameters that are examined before the repair of the crankshaft:
Minimum and maximum diameter of the crankpin and main journal, taper, and ovality is checked.
Run out of main journals and deflection readings are taken to verify the loss of alignment.
A complete non-destructive test using MPI and ultraviolet lamp for heat cracks is undertaken of crankpins and the main journal of the crankshaft.
The crankshaft is also subject to a hardness test.
Based on the preliminary inspection reports prepared by the technicians the repair procedure is planned. The onsite crankshaft grinding machine used for the crankshaft repair is lightweight and is placed on the damaged crank pin from the inspection window of the engine block. There is no requirement of removing the crankshaft from the Entablature and send it to the workshop as bench-type grinders are now outdated.
The crankshaft grinding and crankshaft polishing is undertaken to maintain taper and ovality, surface finish as per the OEMs requirement. RA Power Solutions have facilities to undertake in situ crankshaft grinding, crankshaft polishing, and repair of crankshaft up to the diameter of 700 mm without removing the crankshaft from the engine block.
Inspection of Crankshaft by Latest UV Torch
Crankpin Grinding of Diesel Engine While Vessel is Sailing
During and after the repairs, all the major technical parameters are checked and a calibration report is prepared. It is possible to execute the crankshaft grinding and crankshaft repair on board a vessel while it is sailing. Technicians have seaman passports and can travel to any part of the world in the shortest possible time, thus attending to the damaged engine in a short time. We are class-approved and stand to guarantee the satisfactory performance of the crankshaft after repairs.
Crankpin Grinding and Crankpin Polishing is in Process
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.
Reduce Cost And Breakdown Time By Onsite Repair Of Crankshaft
Onsite Crankshaft Grinding and Polishing Machine
The failure of crankpin and main journal bearing causes serious damage to the crankshaft which are as following:
Development of excessive taper and ovality in Crankshaft, Crankpin and Main Journal.
Development of crack
Abnormal increase and decrease of hardness
Loss of alignment of crankshaft resulting to the increase in deflection readings.
Development of bearing line marks, pitting, local depression
Damage of radius fillet and lube oil profile
The onsite crankshaft grinding equipment developed and manufactured by us is capable to undertake 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 a minimum possible time. The process followed by us for repair of crankshaft is faster, more cost-effective and convenient. It of course avoids removal of 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.
