Crankshaft Reconditioning | Crankshaft Machining | Crankshaft Repair | Crankshaft Grinding

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

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 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 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

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

Repair Services Offered by RA Power Solutions Pvt. Ltd.

Ra Power Solutions Pvt. Ltd. extends repair services for main and auxiliary engines, high capacity compressors, pumps and rotating equipments.

Repair Services for Main and Auxiliary Engines
Repair Services for Main and Auxiliary Engines

We have latest design portable equipments which are carried to the client’s site whether they are land based power plants or vessel on move. The services are offered through trained technicians. Being an Indian company having more than 36 years of experience, we are well known for sincerity, on time services and lowest price in this industry. Few of the services offered by us are as under:

Metal Locking and Metal Stitching

Metal locking and metal stitching is a cold process for repair of steel casting which develops crack or gets broken in to pieces due to overload, stress or an accident.

RA Power Solutions Pvt. Ltd. has experience of more than 36 years of  undertaking repair of most complexed accidental damage of plant and machinery, high capacity marine engine, diesel generating sets, engine block, cylinder heads,turbine casing etc. the repair of casting by metal stitching and metal locking is executed by trained and experienced engineers having experience of more than 40 to 45 years.

Repair crack and broken casting by metal stitching process
Repair Crack and Broken Casting by Metal Stitching Process
Broken Engine Block of Yanmar Engine
Broken Engine Block of Yanmar Engine
Assembly of Broken Pieces of Engine Block
Assembly of Broken Pieces of Engine Block

 

 

 

 

 

 

Engine Block Ready After Metal Stitching Process
Engine Block Ready After Metal Stitching Process
Engine Block Ready After Metal Locking Process
Engine Block Ready After Metal Locking Process

 

 

 

 

 

 

 

The consumables like metal locks and metal keys are procured from reputed companies based in USA and UK. We are cost effective and can depute our team of technicians within 6 hours notice.

Material Used in Metal Locking and Metal Stitching Process
Material Used in Metal Locking and Metal Stitching Process

We are experts for repair of crankshaft of high capacity marine engines upto 700 mm diameter, diesel generating sets and other applications. The services are extended all over the world through our experienced technicians.

Rotor Shaft Grinding

In case of failure of white metal rotor shaft bearing it is necessary to inspect the rotor shaft bearing sitting diameter. We undertake complete inspection of rotor shaft, grinding and polishing onsite. The rotor shaft repair, grinding and polishing is done without dismantling of the rotor shaft from casing. The rotor shaft grinding and polishing is done onsite.

Rotor shaft white metal Babbitt bearings are manufactured and rebabbitting of old rotor shaft bearings is also undertaken. We stand guarantee for the satisfactory performance of white metal babbitt bearings.

Onsite Rotor Shaft Grinding
Onsite Rotor Shaft Grinding
Rotor Shaft Grinding in Process
Rotor Shaft Grinding in Process

 

 

 

 

 

 

Connecting Rod Repair

Connecting rod repair is undertaken with guarantee, absolutely no need of replacing the connecting rod as in most of the cases connecting rods can be repaired and re used.

RA Power Solutions Pvt. Ltd. undertakes in-house repair of connecting rods including re-boring of big end and small end, checking of hardness, cracks, etc.

Connecting Rod Assembled with Piston After Repair
Connecting Rod Assembled with Piston After Repair

We supply second hand reconditioned connecting

Liner, Piston, Connecting Rod, Cylinder Head Under Assembly Supplied by RA Power Solutions
Liner, Piston, Connecting Rod, Cylinder Head Under Assembly Supplied by RA Power Solutions

rods for all make and model of diesel engines like MAN-B&W, Sulzer, Wartsila, Mak, Deutz, Pielstick, Mitsubishi, Daihatsu, Yanmar, Bergen, Niigata,Himsen, Allen, Stork, Fiat, MWM, Hanshin,Caterpillar, SKL, Ruston, Paxman, Crepelle, Mirrlees, Alco, ABC, Crepelle, Nohab etc.

 

Connecting Rod of MAN engine
Connecting Rod of MAN engine
Reconditioning of Connecting Rod
Reconditioning of Connecting Rod

 

 

 

 

 

 

Cylinder Heads

Cylinder Heads are reconditioned at our works. We replace valve seats, valve guides and recondition the cylinder heads which are ready for installation. Repair of cylinder heads is undertaken by our experienced technicians in-house.

The repair of cracks on cylinder heads is done by metal stitching and metal locking process which is cold and proven method of crack repair. Second hand reconditioned cylinder heads are also supplied with guarantee on competitive price.

Cylinder Head of Marine Diesel Engine
Cylinder Head of Marine Diesel Engine
Cylinder Head
Cylinder Head

 

 

 

 

 

Rebabbitting of Bearings

Rebabbitting of old white metal bearings of diesel engines, turbines, alternators and all application are undertaken. Rebabbitting of white metal bearings is done by centrifugal process which ensures dense and uniform bonding with the base steel.

We undertake rebabbitting of bearings up to 1500 mm diameter. The white metal used for rebabbitting is imported from Spain. The metallurgical certificate for white metal and dimensional inspection report is submitted after rebabbitting of white metal is done.

Crankshaft White Metal Babbitt Bearing
Crankshaft White Metal Babbitt Bearing
Crankshaft Bearings
Crankshaft Bearings

Turbine Shaft Repair

Repair of Turbine Shaft
Repair of Turbine Shaft

The periodic inspection of turbine shaft is necessary. It is common to observe bearing line marks, corrosion, fatigue cracks, taper and ovality on turbine shaft bearing seating area In case these defects are not attended on time it can result to the failure of turbine shaft and damage to other parts.

RA Power Solutions Pvt. Ltd. has successfully executed repair of turbine shafts, crank shaft, rotor shaft, alternator shaft and pump shaft number exceeding 170 up to the diameter of 700 mm.

Special pneumatically driven grinding equipment is used to undertake the grinding of the turbine shaft. The turbine shaft grinding equipment is portable, light weighted and easy to carry to the site. The experienced engineers undertake the grinding of damaged bearing seating area of the turbine shaft and maintain the tolerances within 20-30 microns with high surface finish.