Overhauling of Diesel Engine | Engine repair | Marine Engine Overhauling- RA Power Solutions

RA power solutions having experience of four decades in on-site repair of major components like crankshaft, connecting rod, cylinder heads and under takes complete overhauling of main and auxiliary diesel engines installed on vessel or on land for a power generation and other applications.

Diesel-Engine-Repair-Overhauling-300x225
Overhauling of Wartsila Engine

Following are the main features:

  • Engine overhauling, engine repair and replacement of crankshaft is undertaken by RA power solutions for last four decades
  • Engineers and technicians are well experienced to attend any engine breakdown in shortest possible time, most of the engineers and technicians have experience of working in reputed engine manufacturers plant like Wartsila, Caterpillar, Cummins, Mirrlees Blackstone etc…
  • All the services pretaining to the repair of Crankshaft and major components of Diesel Engine is available in-house hence in case any component is found damaged at the time of overhauling of the engine the repair is undertaken by our technician on site and downtime is reduced. No need of calling third party for repairs.
  • RA power solutions undertakes one point guarantee for engine overhauling, engine repair and replacement of crankshaft as all parts are calibrated and inspection reports are prepared prior to reassembly of the engine
  • Crankshaft replacement,correction of crankshaft flange holes and all repairs of crankshaft is undertaken on site with a guarantee and in minimum time. The periodic overhauling as per engine manufacturers recomendation is undertaken.
  • Engineers and technicians undertaking engine overhauling,engine repair have valid CDC and can sail with the vessel this facilitates overhauling of main engine and auxiliary engine while sailing reducing downtime
  • RA power solutions undertakes engine overhauling, engine repair and crankshaft replacement of all makes and model of a high capacity diesel engines including : Mirrlees Blackstone, Ruston, Allen, Daiatsu, Yanmar, Caterpillar, Wartsila, SKL, Skoda, Pielstick, Cummins, Deutz, MAN, MAK etc.
Overhauling of Caterpillar
Overhauling of Caterpillar Engine
Inspection of connecting rod
Inspection of connecting rod
Cylinder head overhauling
Cylinder head overhauling

 

 

 

 

 

 

 

 

 

 

Crankshaft repair is required in case of following abnormalities observed in the crankshaft – RA Power Solutions

  • Development of taper and ovality in crankpin and main journal of the crankshaft in access of tolerances stipulated by manufacturer

  • Development of bearing line marks, pitting and rough surface

  • Damage of radius profile due to accident or seizure of bearing of crankpin or main journal

  • Development of crack and variation in hardness of the crankpin and main journal of the crankshaft.

  • Loss of alignment of the crankshaft

Crankshaft repair is undertaken by RA power solutions of the crankpin and main journal of the crankshaft diameter ranging from 35mm to 700mm. Crankshaft repair is undertaken by experienced technicians who have been specifically trained in our workshop on a dummy crankshaft, the company has experience of more than four decades in crankshaft repair.

The on-site grinding equipment designed and manufactured by RA power solutions can maintain the close tolerance after crankshaft grinding within 0.02mm and the surface finish which is far superior to the international standards. Crankshaft grinding machine has a main frame manufactured out of titanium steel which makes it lighter and vibration free during operation. The grinding of crankshaft is possible even while sailing of the vessel and there is no requirement of holding the vessel at anchor or a port for crankshaft repair.

All the crankshafts repaired by RA power solutions are guaranteed for a satisfactory performance we have successfully executed more than 10,000 crankshaft repair jobs. The services of crankshaft grinding and crankshaft repair are offered on low cost and our technicians carry CDC of Indian origin, Panama, and Pallav.

Crankshaft repair
Crankshaft repair
On-site crankshaft repair
On-site crankshaft repair
Crankshaft repair machining
Crankshaft repair machining

Crankshaft Repair | Crankshaft Grinding and Crankshaft Polishing – RA Power Solutions

The concept of onsite repair of crankshaft is getting popular with the introduction of a portable lightweight on-site crankshaft grinding machine. Now it is possible to undertake crankshaft repair, crankshaft grinding and polishing on site without dismantling of the crankshaft from the engine.

On-site Crankshaft Repair, Crankshaft Grinding, and Crankshaft Polishing costs low with minimum downtime and inconvenience as it does not require removal of crankshaft from the engine block, packing and transportation to the designated workshop for repair by grinding or polishing process

Advantage of trusting RA power solutions

  • First company based in Asia having experience of four decades in Crankshaft Repair, Crankshaft Grinding and Crankshaft Polishing

  • All repairs of crankshaft and process followed for grinding of crankshaft and polishing of crankshaft are approved by class agencies of repute like DNV, Lloyds and various inspecting organisations spread all over the world

  • The repair of crankshaft is executed with a guarantee for the satisfactory performance, the pre and final inspection reports before and after grinding and polishing crankshaft are submitted

  • Technicians executing the repair of crankshaft onsite are highly skilled, trained in our factory on a dummy crankshaft in order to understand the techniques for successful repair of the crankshaft. Some of our technicians have experience of more than 45 years.

  • The onsite inspection and polishing of crankshaft repair is recommended to enhance the life of crankshaft and bearings

  • RA power solutions offers and undertakes inspection and polishing of crankshaft on board a vessel on a nominal cost

  • During our working of four decades on diesel power plant, shipping companies we have undertaken Crankshaft Repair, Crankshaft Grinding and Crankshaft Polishing number exceeding more than 10,000

Conclusion:

RA power solutions has team of technicians with valid CDC from Panama, Palau, and India and can travel all over the world within a short notice

On site crankshaft grinding
On-Site Crankshaft Grinding
Crankpin grinding and polishing
Crankpin grinding and Polishing
On-site crankshaft repair
On-site crankshaft repair

On-Site Crankshaft Grinding Machine | Crankshaft Polishing Machine – RA Power Solutions

Crankshaft grinding machines are designed to maintain the accurate tolerances as per the engine manufacturer’s recommendation

Generally, it is observed that even for the higher diameter of crankpin and main journal of the crankshaft the tolerances do not exceed more than 0.05mm in order to achieve such close tolerances of crankpin and main journal of crankshaft RA power designs and manufactures on-site crankshaft grinding machine which has the capability to maintain the close tolerance of even 0.01mm/0.02mm which is far better than the close tolerance specified by the engine manufacturers.

The on-site crankshaft grinding machine and crankshaft polishing machine manufactured by RA power solutions has the following features:

    1. Crankshaft grinding machine is designed in a way that it can be inserted from the inspection window of the engine block thus there is no need of removal of the crankshaft from the engine block.

    2. In case of space restrictions, RA power has the capability to design the equipment according to the space available on site for grinding or polishing of crankshaft/turbine/alternator shaft/rotor shaft etc…

    3. The on-site crankshaft grinding machine is lightweight portable and can be easily carried to the site all over the world. The crankshaft grinding  machine is packed in the suitcase and is carried as accompanied baggage accepted by all international airlines

    4. The main body of crankshaft grinding equipment is manufactured out of titanium alloy which is lightweight and can absorb the vibrations this feature of crankshaft grinding machine facilitates RA power technicians to undertake crankshaft repair on board the vessel while it is sailing, maintaining the close tolerances within 20 microns.

    5. Crankshaft grinding machine designed and manufactured by RA power can presently work up to 700mm diameter which we are in process of extending up to 1000mm.

Conclusion

RA power has sold more than 70 crankshafts grinding machines all over the world which are performing satisfactorily the cost of the machine is low and is affordable for repair workshop, shipping company, power plants etc…

 Crankshaft grinding machine for repair and grinding
Crankshaft grinding machine for repair and grinding
Crankpin grinding on board the vessel
Crankpin grinding on board the vessel
Crankshaft Grinding Machine for Small Diameter
Crankshaft Grinding Machine for Small Diameter

 

Wartsila Engine Spare Parts Supplier – RA Power Solutions

We are into business of sale and service of high capacity diesel engine for last four decades. We specialize in Wartsila diesel engines, Wartsila diesel generating sets, spare parts and supporting equipment used for the operation of Wartsila diesel generating sets.

Wartsila 12V32 Spare Parts
Wartsila 12V32 Spare Parts

Wartsila diesel generating sets are sourced by us from the companies which have gone for alternate source of power and from the ship breaking yard. The Wartsila engines sourced by us are thoroughly checked by our experienced technicians. We sell complete Wartsila diesel generating sets with supporting equipments. The most popular models are Wartsila 12V32 and Wartsila 18V32.

Wartsila 12V32 and Wartsila 18V32 Spare Parts
Wartsila 12V32 and Wartsila 18V32 Spare Parts

The wartsila engine spare parts are either sourced by us from the OEMs or are removed from the diesel generating sets which are not in operation. Each part is thoroughly checked in our workshop strictly as per the manual, drawing and the specification of Wartsila. We maintain large stock of Wartsila spare parts which includes following:

Reconditioned Connecting Rods of Wartsila
Reconditioned Connecting Rods of Wartsila

Marine Equipments , Marine Engines , Diesel Generators & Genset , Second Hand & Used & New & Reconditioned or Recondition Spare parts ( Crankshaft , Cylinder head , Piston Pin , Piston Ring , Connecting Rod , Cylinder Liner , Engine Bearings , Engine Valves , Valve Seats , Valve Cages , Guides , Springs , Valve Rotators Fuel injection Systems Parts , Cylinder Head Gasket Sets , Cylinder Block , Cylinder Cover , Camshaft , Piston ).

Reconditioned Spares of Wartsila 18V32
Reconditioned Spares of Wartsila 18V32

All the Wartilsa spare parts supplied by us are guaranteed for satisfactory performance and lowest priced in industry. Presently we are dealing in following diesel engines Wartsila , Daihatsu , MWM , Caterpillar , MaN , MaK , B&W , Sulzer , Bergen , Detroit Diesel , Stork Werkspoor , Pielstick , Deutz , Yanmar , MTU , Cummins , Nohab Polar , Caterpillar , Mitsubishi , Yanmar , Fiat , MaK 551 , MaK 552 , MaK 453 , MaK 451 AK , MaK 452 AK , Deutz 540 , Deutz 358 , Deutz 350, Pielstick PC 2.2 PC 2.5, Wartsila 524 ,Wartsila 824 TS, Sulzer 6 AL 25/30, Sulzer 5 AL 25/30 MWM TBD 484, MaN 40/54 , MaN Sulzer 12 ASV 25/30 , Stork Werkspoor DRO 216, Sulzer 16 ZV 40/48 , Deutz BV 16M 540 , Stork Werkspoor 9 TM 410, B&W 6L 45 GFCA, MAN B&W 55/GF, CAT D353, B&W 5T23LH, Daihatsu 6 PST 26D, Daihatsu 6 PSHTb 26M, Mak 6MU 451 AK, Deutz 6M 628, Caterpillar 3512, Deutz BV 12M 628, Lister Blackstone K8 Major MK2, MWM TBD 234, WICHMANN 5AX, SKL 8NVD 48A-2U, Pielstick PC 2.2 LNR, B&W ALPHA 10V 23-U, Caterpillar 3508 and more.

Reconditioned Bearings of Wartsila 12V32
Reconditioned Bearings of Wartsila 12V32
Wartsila 12V32 Turbocharger
Wartsila 12V32 Turbocharger

 

For more information, please email us on info@rapowersolutions.com or call us on +91 – 124 – 437 8292 , +91 9213604692

Alternators of Wartsila for Sale
Alternators of Wartsila for Sale
Wartsila 18V46 Diesel Engine for Sale
Wartsila 18V46 Diesel Engine for Sale

Crankshaft Repair on Board a Vessel by Experienced Engineers – RA Power Solutions

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.

Damaged Crankpin of MAN Marine Diesel Engine
Damaged Crankpin of MAN Marine Diesel Engine
Crack Detection by MPI Before Grinding
Crack Detection by MPI Before Grinding

 

 

 

 

 

 

RA Power Solutions having 37 years of experience have executed more than 10,000 jobs of repair of crankshaft successfully which is a record.

Crack Detection of Crank Pin
Crack Detection of Crank Pin
Crankshaft Repair Under Process
Crankshaft Repair Under Process

 

 

 

 

 

 

 

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.

High Quality Marine Engine Spares – RA Power Solutions

RA Power Solutions Pvt. Ltd. provides engine repair services for last 37 years to shipping industry and diesel engine driven power plants.

Marine Engine Spares
Marine Engine Spares

Our expertise is in repair of high value spare parts onsite like crankshaft, cylinder heads, cylinder liners, connecting rods and other marine engine spares.

We manufacture and supply diesel engine spare parts and supporting equipment for all reputed make of marine engine like MAN-B&W, Sulzer, Wartsila, Mak, Deutz, Pielstick, Mitsubishi, Nohab, Daihatsu, Yanmar, Bergen, Crepelle, Niigata, Himsen, Allen, Stork, MWM, Hanshin, Caterpillar, Ruston, Paxman, Mirrlees, Alco, Fiat, ABC, Crepelle, SKL , etc

Fresh Water Generator
Fresh Water Generator
Cylinder Head
Cylinder Head

 

 

 

 

 

Reconditioned marine engine spare parts are also supplied by us including crankshaft, cylinder heads, cylinder liners, connecting rods, piston rods, camshafts, etc. with guarantee as ours is the only company having 37 years of experience undertaking the reconditioning of spare parts by highly skilled technicians using modern equipments.

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
M453AK Cylinder Head
M453AK Cylinder Head

 

 

 

 

 

 

We also export marine engine spares and supporting equipment like fresh water generator, heat exchanger gaskets, electric motors, etc. to various countries like Qatar, Dubai, South America, Indonesia, Singapore, UK, Germany, Norway, etc.

Cylinder Liners for Wartsila Diesel Engine
Cylinder Liners for Wartsila Diesel Engine
Crankshaft of Wartsila Diesel Engine
Crankshaft of Wartsila Diesel Engine

 

Insitu Grinding of Crankshaft – RA Power Solutions

Insitu grinding of crankshaft and polishing is offered by RA Power Solutions Pvt. Ltd. for last more than 3 decades. Our experienced technicians reach at site in minimum possible time with Insitu crankshaft grinding machine and undertake crankshaft repair without removing of crankshaft from the main engine.

Insitu Crankshaft Grinding in Process
Insitu Crankshaft Grinding in Process
Crankshaft Grinding
Crankshaft Grinding

 

 

 

 

 

 

 

The Insitu crankshaft grinding is undertaken by light weight portable Insitu crankshaft grinding machine which is operated pneumatically. The equipment is of latest design and is capable to maintain the 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 book and can sail if required.

 

Upper View of Crankshaft Grinding Machine
Upper View of Crankshaft Grinding Machine

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 crankshaft up to 700 mm diameter and have executed more than 10,000 repairs in our 36 years of experience world wide.

Onsite Crankshaft Grinding Machine Ready for Dispatch
Onsite Crankshaft Grinding Machine Ready for Dispatch

 

Pneumatic Motor Mounted on Machine
Pneumatic Motor Mounted on Machine

 

 

 

 

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 36 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.

Revolution in Crankshaft Grinding – RA Power Solutions

revolution in engineering 11

Good News for Shipping Companies, Power Plants and Repair Workshops.

Crankshaft grinding machine up to 700 mm diameter is designed, developed and manufactured by RA Power Solutions. Machine is having following features:

Crankshaft Grinding Machine Design: Machine is portable; light weight and can be carried to the site. Nowadays, there is no need of disassembly of complete engine.

Operation of Crankshaft grinding machine: The machine is operated pneumatically or by electrical motor. The design is so simple and machine can be easily operated by a skilled technician.

Quality: Crankshaft grinding machine is capable of maintaining close tolerance in terms of taper and ovality up to 20 microns and can also achieve the surface finish as per the International standards.

Training: RA Power Solutions Pvt. Ltd. provides training to the clients, technicians for the duration of 3 days. The assembly, operation and maintenance of the machine are explained.

Cost of Machine: Presently, shipping companies, power plants having high capacity diesel generating sets have no option but to call for the technicians from the companies based in Norway, Singapore, UK and various countries by paying exorbitant amount and travel expenses. The Crankshaft grinding machine is manufactured by RA Power Solutions is very reasonably priced and the cost can be recovered in 1 or 2 jobs of repairs.

We have supplied more than 60 Insitu crankshaft grinding machines all over the world which are performing satisfactory.

Disassembly of Crankshaft Grinding Machine with Pneumatic Motor
Disassembly of Crankshaft Grinding Machine with Pneumatic Motor
Disassembly of Crankshaft Grinding Machine
Disassembly of Crankshaft Grinding Machine

 

 

 

 

 

 

Assembly of Crankshaft Grinding Machine in Progress
Assembly of Crankshaft Grinding Machine in Progress
Assembly of Crankshaft Grinding Machine with Pneumatic Motor
Assembly of Crankshaft Grinding Machine with Pneumatic Motor

 

 

 

 

 

 

 

Packing in Progress- Insitu Crankshaft Grinding Machine
Packing in Progress- Insitu Crankshaft Grinding Machine
Onsite Crankshaft Grinding Machine Ready for Dispatch
Onsite Crankshaft Grinding Machine Ready for Dispatch

 

 

 

 

 

 

 

 

WORKING OF ONSITE CRANKSHAFT GRINDING MACHINE (400-450mm)

Importance of Hardness in Crankshaft – RA Power Solutions

Crankshaft

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 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.

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.