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

RA Power Solutions has now made it easy to undertake crankpin grinding, crank pin 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 repair of crankpin of crankshaft  onsite:

Crack Detection Test of Crankpin
Crack Detection Test of Crankpin

I) Initial dimensional inspection of crankpin is undertaken by calibrated measuring instruments for taper, ovality and other parameters.

II) Radius fillet, lubricating oil hole of crankpin is checked for any loss of profile and damage.

 

III) Crack detection test by high-intensity MPI torch is undertaken by level 3 qualified technicians.

 

IV) Hardness check and other important parameters are checked and recorded.

 

After the initial inspection in case required grinding and polishing of crankpin is undertaken maintaining 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 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 most modern onsite crankshaft grinding machine is used for crank pin grinding delivers and maintains the tolerances after crank pin 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
Grinding & Polishing of Crankpin on Board a Vessel
RA Power Solutions also provides the following onsite repair services:
I) Machining and grinding of crankpin journals up to 700 mm dia
II) Grinding of main journals
III) Machining and grinding of crankpin fillets
IV) Grinding and Machining of main journal fillets
V) Machining and grinding of intermediate shaft/tail shaft
VI) Grinding and polishing of crankshaft, turbine shaft, alternator shaft, pump shaft
VI) Metal stitching/metal locking of damaged casting
VII) Overhauling and Repair of Engine

VII) Rebabbitting of old white metal bearings

Repair & Overhauling of Engine
Repair & Overhauling of Engine
Repair of Intermediate Shaft
Repair of Intermediate 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 onsite repair services, please free to write us on info@rapowersolutions.com

Grinding and Polishing of Crankshaft | Repair of Crankshaft | Crankpin | Crankshaft Reconditioning – RA Power Solutions

RA Power Solutions with an experience of forty years provide you with a team of experienced technicians repair of crankshaft onsite, overhauling and maintenance of diesel engine, metal stitching and all the repair jobs related to engine room on a vessel or land-based diesel power plants. We possess precision and latest design of equipments to execute the repairs strictly as per the international norms and maintain the tolerances stipulated by the manufacturer.

Crankshaft Grinding & Polishing on Moving Vessel
Crankshaft Grinding & Polishing on Moving Vessel

RA Power solutions have a mission to provide world class repair services of crankshaft without compromising on the life of crankshaft. The minimum diameter of crankpin and main journal is reduced to maintain the originality of the crankshaft. This again is possible due to the combination of experienced technicians and the lattest design of tools we possess. It is observed that in most of the cases the repairs are not successful as the tool used for the grinding of crankshaft is either out dated and not able to fit on the crankshaft due to space limitations, less bearing width or equipment not designed to give the results as desired.

Crankshaft Grinding & Polishing in Diesel Power Plant
Crankshaft Grinding & Polishing in Diesel Power Plant

RA Power Solutions is the only company which 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 crankshaft is that there is no need for striping down the equipment which in most of the cases is not possible due to various restrictions.

RA Power Solutions being an Indian company execute the repair of crankshaft on 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 type 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 our consultancy services which after inspection of crankshaft advise the various methods of repair of 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 Constraint

 

 

 

 

 

 

 

 

We also provide services related to engine repair i.e. turbine shaft repair, alternator shaft repair, pump shaft repair, 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 40 years of experience in working on large crankshafts and Diesel Engines.

For more information, please email us on info@rapowersolutions.com

Repair of Crankpin is in Process
Repair of Crankpin is in Process
Crankpin Machining by Onsite Crankshaft Grinder
Crankpin Machining by Onsite Crankshaft Grinder

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

RA Power Solutions is having more than forty years of experience in reconditioning of Crankshaft of large marine engines and engines installed in Power plants.

Diesel Engine Ready for Grinding & Repair
Diesel Engine Ready for Grinding & Repair

The onsite crankshaft repair and grinding is undertaken by RA Power Solutions experienced technicians for diameter ranging from 30 mm to 700 mm which cover almost all the crankshafts used for different applications. It is generally observed that due to non-experience or lack of knowledge of the companies undertaking reconditioning of Crankshaft misguide the end users resulting to serious breakdown and considerable higher expense.

Onsite Grinding of Crankpin by RA Power Solutions
Onsite Grinding of Crankpin by RA Power Solutions

RA Power Solutions has undertaken reconditioning of Crankshaft exceeding ten thousand numbers and recommends following situation for reconditioning of the Crankshaft.

Recommendation for reconditioning of Crankshaft:

Crankpin Before Grinding
Crankpin Before Grinding

I.) It is recommended to undertake Crankshaft repair in case taper and ovality exceeds the limit specified in Maintenance manual of engine manufacturer.
II. )  In case due to accident, deep line marks or depression is developed.
III. ) Reconditioning of Crankshaft is recommended in case higher hardness is observed due to seizer of bearings or any other reason.
IV.) Development of surface crack
V.) Loss of alignment.
VI.) In certain cases, although the dimensions of CR Pin and Main Journal are observed within the limit, but due to rough surface observed on Cr Pin and of Main Journal, surface require polishing.

Above suggestions are given for reconditioning of Crankshaft. It is always advisable to send photographs and brief Inspection report to RA Power Solutions for free recommendation as how to repair Crankshaft successfully.

For more information, please email us on info@rapowersolutions.com or call us on +91-9582647131

Crankpin After Onsite Grinding & Repair
Crankpin After Onsite Grinding & Repair
Grinding of Crankpin by Onsite Crankshaft Grinding Machine
Grinding of Crankpin by Onsite Crankshaft Grinding Machine

Onsite Crankshaft Repair | Crankshaft Grinding | Crankshaft Reconditioning – RA Power Solutions

Onsite Crankshaft Repair | Crankshaft Grinding | Crankshaft Reconditioning is undertaken by RA Power Solutions Pvt Ltd for last four decades. The company has technicians who are trained to undertake Onsite Crankshaft Repairs strictly as per manufacturers specifications stipulated in the manual.
All technicians have valid CDC and can travel in a short notice anywhere in the world to board the vessel. The Onsite Crankshaft repair and onsite crankshaft grinding equipment used by RA Power Solutions has a main structure manufactured out of Titanium steel which results to absorption of Vibration while the Crankshaft Grinding machine is in operation in high seas with turbulence. The quality after the reconditioning and repair of Crankshaft is of Great Importance and is maintained. Following checks are undertaken.

Repair of MAN Engine is in Process
                  Repair of MAN Engine is in Process

Quality of a Re-Machined Pin or Journal
The quality of a pin or journal after machining has to meet following requirements:

I) Geometrical  tolerance in accordance with manufacturer specifications.

II) A blueing check has to be carried out on the re-machining surface. Blueing Shells: Min. Width equivalent to Journal or Crank-pin dimensions respectively. Min. Length equivalent to 1/5 of Journal or crank-pin circumference.

III) Required contact area:  Min. 35% equally distributed over width and circumferences.

IV) Free of hairline cracks: Journal or crank pin to be tested by mean of Magnetic Particle crack detection method.

V) Free of Martensite:  The microstructure is to be tested for edged areas of martensite structure will replicas or micro etching with 5% nitric acid in alcohol ( Nital) applied to the pin after polishing.

VI) Maximum admissible hardness of remaining local hardspots : However such local hardspots are not tolerated around the fillets and the bores for lubrication.

For more information, please email us on info@rapowersolutions.com

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

 

Crankshaft Grinding Machine | Crankshaft Grinder| Global Onsite Repairs– RA Power Solutions

Engine population is rapidly increasing for shipping industry, power plants and various applications. In most of the cases engines are used not only for the emergency purpose but as a base load. The continuous running of diesel engine results to wear and tear of crankpin and main journal of the crankshaft. In certain cases taper and ovality more than the permissible limit is developed in the crankpin and the crankshaft main journal.

Damaged Crankpin of Engine
Damaged Crankpin of Engine
Inspection of Engine Before Grinding
Inspection of Engine Before Grinding

 

 

 

 

 

 

 

The disassembly of the crankshaft from the main engine and to send it to the designated workshop is a lengthy process. This is now outdated. RA Power Solutions having the experience of more than four decades in repair of crankshaft have developed a portable, light weight onsite crankshaft grinding machine which can be taken to the site as an accompanying baggage. The onsite crankshaft grinding machine has following features:

 I) Light in weight, can be carried to the site easily.

II) Portable nature of onsite crankshaft grinding machine facilitates it to insert from the inspection window and undertake grinding and polishing of crankpin.

III) Machine is designed and can maintain the taper and ovality within 0.02 mm. This meets with the OEMs tolerances.

IV) Surface finish and other parameters can be maintained as per the international norms.

V) Onsite crankshaft grinding machine is easy to operate

VI) Onsite training is provided for smooth running of crankshaft grinding machine.

VII) More than 70 machines sold all over the world and performing satisfactory.

VIII) Insitu crankshaft grinding machines are low priced and recommend for repair workshops, shipping and engineering companies and power plants.

Inspection of Connecting Rod on Board a Vessel
Inspection of Connecting Rod on Board a Vessel
Inspection of Engine is in Process
Inspection of Engine is in Process

 

 

 

 

 

 

 

Crankshaft grinding machines exported to various countries including Dubai, Singapore, Bangladesh, Indonesia, Greece, Qatar, Nigeria, South America, etc.

For more information, please email us on info@rapowersolutions.com

Grinding of Crankpin is in Process
Grinding of Crankpin is in Process
Crankpin After Grinding
Crankpin After Grinding

Crankpin Grinding | Crankpin Repair by Insitu Crankshaft Grinding Machine- RA Power Group

Crankpin grinding, crankpin repair by insitu crankshaft grinding machine is offered by RA Power Solutions through 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 the experienced technicians in order to detect the fault after the damage or accident.

Damaged Crankpin of Yanmar Engine
Damaged Crankpin of Yanmar Engine
Inspection of Crankpin Under Process
Inspection of Crankpin Under Process

 

 

 

 

 

 

 

Following are the major parameters which are examined before the repair of crankshaft:

I) Minimum and maximum diameter of the crankpin and main journal, taper and ovality is checked.

II) Run out of main journals and deflection readings are taken to verify the loss of alignment.

III) Complete non-destructive test using MPI and ultraviolet lamp for heat cracks is undertaken of crankpins and the main journal of the crankshaft.

IV) Crankshaft is also subject to 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 light weight 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 out dated.

Inspection of Crankshaft by Latest UV Torch
Inspection of Crankshaft by Latest UV Torch
Crankpin Grinding of Diesel Engine While Vessel is Sailing
Crankpin Grinding of Diesel Engine While Vessel is Sailing

The crankshaft grinding and crankshaft polishing is undertaken maintaining taper and ovality, surface finish as per the OEMs requirement. RA Power Solutions have facilities to undertake insitu crankshaft grinding, crankshaft polishing and crankshaft repair up to the diameter of 700 mm without removing the crankshaft from the engine block.

During and after the repairs all the major technical parameters are checked and 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 passport and can travel to any part of the world in a shortest possible time thus attending to the damaged engine in short time. We are class approved and stand guarantee for the satisfactory performance of crankshaft after repairs.

We are commonly working on following engines:

Wartsila, Daihatsu, Mirrless Blackstone, Yanmar, Allen, MAK, MAN, B&W, Sulzer, Caterpillar, Fiat, Mitsubishi, MTU, Cummins, Deutz, Nohab Polar, Wartsila 12V32, Wartsila 18V32, Pielstick, Bergen , Detroit Diesel, MaK 552 , MaK 453 , MaK 451 AK, Niigata, MaK 452 AK, Ruston, Lister Blackstone K8 Major MK2, Volvo Penta, etc.

For more information, email us on info@rapowersolutions.com

Crankshaft Radius Under Machining
Crankshaft Radius Under Machining
Crankpin Grinding and Crankpin Polishing is in Process
Crankpin Grinding and Crankpin Polishing is in Process

Onsite Crankpin Grinding- Large and Small Engine Repairs – RA Power Solutions

RA Power Solutions is engaged in onsite crankshaft grinding, crankshaft machining and crankshaft repair of small and high capacity engines. The crankshafts and all cylindrical shafts of rotatory equipment are repaired onsite without disassembly.

Onsite Crankshaft Grinding While Vessel is on Move
Onsite Crankshaft Grinding While Vessel is on Move

Following are the main features of the services offered related to crankshaft repair:

I) Experience technicians undertake crankshaft inspection which includes dimensional calibration for taper, ovality and hardness testing.

II) In case of failure of bearing or serious damage, it is important to undertake crack check. We recommend magnetic particle inspection and dye penetrant.

III) Checking  loss of alignment of crankshaft by deflection gauge or taking the run-out of the main journal.

IV) Straightening of crankshaft is undertaken if required.

V) Radius fillet original profile is maintained in case of damage.

VI) Onsite crankshaft grinding, crankshaft repair is undertaken by using

Onsite Crankshaft Grinding Machine
Onsite Crankshaft Grinding Machine

crankshaft grinding equipment maintaining the crankpin and main journal tolerances as per manufacturers.

VII) Surface finish after crankshaft grinding and polishing is of great importance and is maintained.

Main points related to crankshaft repair services offered by RA Power Solutions:

I) Company having 40 years of experience in repair of crankshaft can easily detect the damage caused to the crankshaft due to accident.

II) We are experts in salvaging the crankshafts which as per the manufacturers are rejected. This is possible due to our vast experience,knowledge and use of latest technological equipment.

III) Large team of experienced technicians having valid passport and seaman book and  can travel all over the world in shortest possible notice.

IV) In field of crankshaft repair we are the leaders, most experienced, sincere and trust able.

V) The services provided is on the lowest rates and can be compared with other companies.

VI) Only company having executed more than 11,000 jobs of crankshaft repair and engine overhaul maintenance worldwide.

VII) All the repair services related to high capacity diesel generating sets is offered with guarantee.

Inspection of Crankpin is in Process
Inspection of Crankpin is in Process
Repair of Crankpin by Crankshaft Grinding Machine
Repair of Crankpin by Crankshaft Grinding Machine

Only company in the world manufacturing onsite crankshaft grinding machine and onsite polishing machine and have sold more than 70 units all over the world.

For more information, please email us on info@rapowersolutions.com

Crankshaft Repair Services India by RA Power Solutions

Crankshaft needs repair or grinding in case of following defects:

  • Development of excessive taper and ovality more than the tolerances stipulated.
  • Loss of alignment of crankshaft.
  • Seizure of bearing, development of line marks.
  • Development of pitting and rough surface of crankshaft main journal and crankpin

RA Power Solutions offer crankshaft repair services for last four decades to the land based engine and engines installed on vessels.

Crankshaft Repair Services While Vessel is Sailing
Crankshaft Repair Services While Vessel is Sailing
Crankshaft Grinding Services- Power Plant
Crankshaft Grinding Services- Power Plant

 

 

 

 

 

 

 

The onsite repair services of crankshaft helps in getting the engine back into operation in minimum time. Following crankshaft grinding services are offered by RA Power Solutions at Sea, on land or in shipyard:

  • Onsite Crankshaft Repair
  • Crankshaft Straightening
  • Onsite Crankshaft journal repair
  • Crankshaft Regrinding
  • Onsite Crankshaft polishing
  • Onsite Main bearing Regrinding
  • Onsite Crankshaft machining
  • Orbital crankpin machining/regrinding
  • Main bearing machining
  • Insitu Main bearing Main Journal Polishing

RA Power Solutions has technicians who are well trained and have executed successfully more than 11,000 jobs of crankshaft repair. We are also considered to be lowest priced in industry.

Crankshaft Grinding being done on a Small Crankpin Width
Crankshaft Grinding being done on a Small Crankpin Width
Crankpin After Grinding by Crankshaft Grinding Machine
Crankpin After Grinding by Crankshaft Grinding Machine

 

 

 

 

 

 

 

For any services related to crankshaft grinding, crankshaft repair, crankpin polishing or diesel engine repair, please free to write us on info@rapowersolutions.com

Crankshaft Grinding, Crankshaft Polishing and Crankshaft Repair Machine – RA Power Solutions

RA Power Solutions is the first company to introduce portable, light weight, onsite crankshaft grinding, crankshaft polishing and crankshaft repair machine on the lowest price.

With the introduction of revolutionary onsite crankshaft grinding machine, now it is possible to save the repair cost of crankshaft. The onsite crankshaft grinding repair machine has proven its worth with 70 clients based all over the world.

Onsite Crankshaft Grinding Polishing Machine having following features:

I) Onsite Crankshaft Grinding Polishing machine can undertake crankshaft grinding and crankshaft polishing up to 700 mm diameter without dismantling of crankshaft.

Crankshaft Grinding Machine Packed in Steel Box for Dispatch
Crankshaft Grinding Machine Packed in Steel Box for Dispatch

In terms of taper and ovality tolerance can be maintained within 20 to 30 microns or as per the manufacturer’s requirement.

II) For long life of bearings and crankshaft it is important to have high level of surface finish with Onsite Crankshaft Grinding Polishing Machine it is possible to maintain surface finish 0.15 RA value.

III) Onsite Crankshaft Grinding Polishing Machine is easy to operate and on job training is also provided.
IV) Onsite Crankshaft Grinding Polishing Machine can be carried as a accompanied baggage by the technicians all over the world.

V) Onsite Crankshaft Grinding Polishing Machine is ideal for grinding and polishing of main engine and auxiliary engine on board the vessel. All popular make of engine crankshaft can be repaired like MAK, MAN, Wartsila, Daihatsu, Ruston, Yanmar, Mirrless Blackstone, SKODA, etc.

VI) Onsite Crankshaft Grinding Polishing Machine supplied all over the world including Nigeria, Dubai, Singapore, South America, Italy, Maldives, Indonesia, Bangladesh, etc.

For more information, please email us on info@rapowersolutions.com

Grinding of Crankpin by Crankshaft Grinding Machine is in Process
Grinding of Crankpin by Crankshaft Grinding Machine is in Process
Crankshaft Grinding Machine for High Diameter
Crankshaft Grinding Machine for High Diameter

Crankshaft Grinding by Pneumatic Grinding Machine – RA Power Solutions

Onsite crankshaft grinding is the latest trend in shipping industry. Removing crankshaft from the engine block involves dis assembly of all major parts which require time, efforts and money. The best solution for this is to undertake crankshaft grinding and crankshaft polishing onsite without dis assembly of the crankshaft from the engine block.

Pneumatic Crankshaft Grinding Machine
Pneumatic Crankshaft Grinding Machine

The onsite grinding is undertaken by inserting the onsite crankshaft grinding machine from the inspection window.

Pneumatic Crankshaft Grinding Machine for Small Diameter
Pneumatic Crankshaft Grinding Machine for Small Diameter

RA Power Solutions undertake onsite crankshaft grinding and onsite crankshaft polishing and repairs up to 700 mm diameter.

We have team of experience technicians, they travel all over the world with portable and light weight equipment. It is now possible to execute the crankshaft repair in few hours depending on the diameter and extent of the damage of crankshaft.

RA Power Solutions has executed repairs of more than 10,000 crankshaft all over the world for leading shipping companies, power plants, heavy engineering companies, etc.

We are respected in industry for quality, sincerity and low price.

Crankshaft Grinding by Pneumatic Grinding Machine
Crankshaft Grinding by Pneumatic Grinding Machine
Crankshaft Grinding & Repair by Grinding Machine is in Process
Crankshaft Grinding & Repair by Grinding Machine is in Process