Engine bearings for crankpin and main journal are manufactured by RA Power Solutions Pvt. Ltd. We also maintain stock of standard and undersized bearings in tri-metal and bimetal of popular make and model of engines.
Alternator Bearing of Wartsila 12V32 White Metal Bearing of Deutz Engine
After grinding of crankpin and main journal of crankshafts undersize crankpin bearings and main journal bearings are required. It is observed that engine manufacturers most of the time do not have an inventory of undersized bearings, thus delaying the assembly and commissioning of the engine.
Ruston Engine BearingEngine Bearing of Daihatsu DS 26
RA Power Solutions undertake onsite grinding of crankshafts for last more than 37 years. We understand the importance of ready availability of standard bearings, undersized bearings of tri-metal and bimetal, and bearings for popular engines and models that are available in stock. Following is the list of engines for which engine bearings are available.
Engine Bearings for MAN Diesel EngineEngine Bearing of Yanmar Diesel Engine
RA Power Solutions stands guarantee for satisfactory performance of engine bearings. The main journal bearings and crank pin bearings are priced lower than the industry with immediate delivery.
The author is Mr. Raj Shahani, Managing Director of the company. He is having more than 36 years of experience in rebabbitting of bearings, metal locking/metal stitching of crack steel casting, marine engine spares, grinding and repair of all shafts. And all services related to the repair of engines and supporting equipment. The company has in-house trained technicians, equipment, and marine engine spares for all make and model of engine and serves all over the world.
RA Power Solutions Pvt. Ltd. has recently undertaken cast iron repair, and crack repair of a cast iron engine block by metal stitching and metal locking process. The engine block which is made of cast iron was broken from the window cover sitting area. The engine block was broken into pieces measuring approximately 330 × 420 mm.
RA Power Solutions Pvt. Ltd. after getting the dimensions got the casting made of cast iron, and it was metal locked and metal stitched on board a vessel. The engine after repairs is performing satisfactorily.
Broken Engine Block
Casting Piece Given Profile as per Damaged Engine Block
In 37 years of experience, we have executed more than 1000 jobs of crack repair by metal stitching and metal lock surgery not only for shipping but for all sectors of industry. Perhaps we are the only company in the world to execute crack repair of engine components or any crack in metal on board a vessel while sailing.
Metal stitching and metal locking process on board the vessel:
Keys and Locks Used in Metal Locking and Metal Stitching Process
Metal Stitching Under Progress on Board the Vessels
RA Power Solutions specializes in comprehensive cast iron block repair and iron engine block repair services, offering effective solutions for both minor and major cracks in cast iron castings.
The author is Mr. Raj Shahani, Managing Director of the company. He is having 37 years of experience in metal stitching and metal locking of crack repair, cast iron crack repair, grinding of crankshaft, and all services related to the repair of engines and supporting equipment.
The company has in-house trained technicians, equipment and serves all over the world. For more information regarding repair cast iron, repair crack cast iron, cast iron repair, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
Metal Stitching Under Process
Casting Piece Stitched in Broken Area of Engine Block
Metal Stitching and Metal Locking Under Progress
The final finish is given to the Damaged Area of the Engine Block
RA Power Solutions Pvt. Ltd. was called by a leading forging company based in western part of India manufacturing open forgings for heavy engineering plants. One of the operation involved use of clear space pneumatic hammer which they imported from massey of UK.
Due to constant use of forging hammer and its age the pneumatic chamber of the hammer developed a crack measuring 69 inches. The whole plant due to non operation of this critical equipment was on stand still. The pneumatic chamber is manufactured out of grey cast iron. The company tried to repair the crack by welding process and engaged a leading company to execute the repairs. The crack repair of the cast iron pneumatic chamber was not successful. RA Power Solutions Pvt. Ltd. was called to repair the crack by metal surgery process.
Materials Used in Metal Stitching/Metal Locking Process
Metal Surgery
RA Power Solutions Pvt. Ltd. initially carried out magnetic particle test (MPI) and dye penetrant test of cast iron pneumatic chamber to check the exact length and the profile of the crack developed. The paint including red oxide applied on the cast iron pneumatic chamber was removed completely. The crack of 69 inches was repaired by our technicians by metal stitching and metal locking process.
The keys, master metal locks and all consumables used for metal surgery were imported from UK. After the completion of metal stitching and metal locking operations, the chemicals were applied to stop the air leakage from the pneumatic chamber.
Metal Stitching/Metal Locking Procedure
This process of metal surgery followed by us for repair of crack in cast iron is cold process, no heat is generated and is proven method for successful repair of crack in cast iron casting.
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.
RA Power Solutions Pvt. Ltd. extends repair services for main and auxiliary engines, high-capacity compressors, pumps, and rotating equipment. We have the latest design portable equipment which is carried to the client’s site whether they are land-based power plants or vessels on the 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 the lowest price in this industry. A few of the services offered to 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 into 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 complex 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.
Broken Engine Block of Yanmar Engine
Assembly of Broken Pieces of Engine Block
Engine Block Ready After Metal Stitching 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
We are experts in the 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 the 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 are done without dismantling the rotor shaft from the 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
Rotor Shaft Grinding in Process
Connecting Rod Repair
Connecting rod repair is undertaken with a guarantee, absolutely no need of replacing the connecting rod as in most 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 the big ends and small end, checking of hardness, cracks, etc.
Connecting Rod Assembled with Piston After Repair
Liner, Piston, Connecting Rod, and Cylinder Head Under Assembly Supplied by RA Power Solutions
Connecting 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, Nohab, etc.
Connecting Rod of MAN engine
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 a metal locking process, which is a cold and proven method of crack repair. Second-hand reconditioned cylinder heads are also supplied with a guarantee at a competitive price.
Cylinder Head of Marine Diesel Engine
Cylinder Head
Rebabbitting of Bearings
Rebabbitting of old white metal bearings of diesel engines, turbines, alternators, and all applications are undertaken. Rebabbitting of white metal bearings is done by a centrifugal process, which ensures dense and uniform bonding with the base steel.
We undertake rebabbitting of bearings up to 1500 mm in 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. For more information on onsite crankshaft repair services, cylinder liners exporter, cylinder liners, engine cylinder liner, cylinder sleeve manufacturer, metal locking, repair of rotor shaft, and onsite repair services of crankshaft contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
A vessel sailing in the Middle East reported damage of engine block of Yanmar 6N21L-SN due to an RA Power Solutions Pvt. Ltd. deputed team yof technicians with consumables. The broken pieces were assembled and metal stitching and metal locked. Total broken area was 46 inches. The broken pieces were re-assembled and metal stitching due to shortage of time and to put on the generator in minimum possible time. The other alternate option was to use the new piece of casting, which was not done in this case due to shortage of time accident.
Yanmar Marine Diesel Engine
RA Power Solutions Pvt. Ltd. deputed a team of technicians with consumables. The broken pieces were assembled and metal stitched/metal locked. The total broken area was 46 inches. The broken pieces were re-assembled and metal stitched due to shortage of time and to put on the generator in minimum possible time. The other alternate option was to use the new piece of casting, which was not done in this case due to a shortage of time.
Cast iron components develop cracks and break into pieces as a result of accident or overload. The replacement of crack component is expensive. It is recommended to repair crack and broken casting by metal stitching and metal locking process.
Repair Crack and Broken Casting by Metal Stitching / Metal Locking Process
Repair of crack components is executed by experienced technicians, and we use the consumables comprising of metal locks and metal keys procured from companies based in UK and USA. We also stand guarantee for the satisfactory performance after metal stitching/metal locking of the component. Most of the metals can be metal stitched where repair of crack by welding is not successful. To get more information regarding cracked engine block metal stitching, metal stitching for repair of cracks contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
RA Power Solutions undertakes reconditioning of connecting rods irrespective of their size and load factor. We have special-purpose equipment for inspection of connecting rods and repairs. Following steps are taken for reconditioning of connecting rods.
Connecting rods are disassembled and cleaned with a special chemical.
Dimensional inspection of large end and small end bore is done.
Connecting rod is also checked for any loss of alignment on special-purpose boring machine loaded with DRDO.
Dye penetrant test and MPI are done for crack detection. Special attention is given to detecting the crack in the serration area, connecting rod bolts, and bolt sitting area.
Machining and grinding are done to restore the original dimension of the big end and small end of connecting rods.
Connecting Rod Reconditioning
Reconditioning of Connecting Rod
Connecting rods are inspected by a senior technician and reports are maintained.
RA Power Solutions has successfully undertaken the repair of more than 15,000 connecting rods in the last 36 years of operation. RA Power Solutions also exports reconditioned connecting rods at a low price with a guarantee.
RA Power Solutions Pvt. Ltd. undertakes complete reconditioning of cylinder heads. It is observed that cracks are developed due to sudden change of temperature of cylinder heads. We recommend repair of cracks by metal stitching process which is cold and no heat is generated. The valve seat and valve guides should also be replaced of cylinder heads. We have Chris marine equipment for reconditioning of cylinder heads.
Cylinder Head
RA Power Solutions Pvt. Ltd. also maintains large stock of reconditioned cylinder heads which are supplied on very low price. All cylinder heads are guaranteed for performance. Cylinder head of following make of engine are available in stock.
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. are available in stock.
MAK Cylinder head
Onsite Diesel Engine Repair is one of the important services provided by RA Power Solutions. We have ex-engineers from engine manufacturers like Wartsila, Caterpillar, Ruston, Cummins, Deutz etc who have joined hands with us. Technicians and engineers are experienced and can meet with any emergency requirement of diesel engine repair due to accidents for land-based or vessel-mounted main and auxiliary engines.
Cylinder Head of Deutz EngineCylinder Head of Marine Diesel Engine
The normal routine overhauling of diesel engines is also undertaken. The main advantage of onsite diesel engine repair services extended by RA Power Solutions is that we have in-house facilities for undertaking repair of major components like engine block, crankshaft, cylindrical head repair, etc and there is no need of engaging a third party. In fact, we are world-famous for extending onsite crankshaft grinding repair and all the services related to diesel engine.
The author of this blog is Raj Shahani, Managing Director of RA Power Solutions Pvt. Ltd. having experience of more than 36 years. He is instrumental in executing successful repair of crankshaft, engine block, cylinder heads, connecting rods, and mechanical equipment replacement cost of which works out in millions of dollars.
RA Power Solutions Pvt. Ltd. manufactures gaskets for different equipments like heat exchangers, Fresh Water Generator, purifiers, etc. The heat exchanger gaskets manufactured have the profile strictly as per the requirement or the plates on which it is to be fixed. The hardness, and quality of the gaskets are maintained in order to ensure that there are no leakages while the equipment is operated on a pressure. Each gasket is subject to in-house quality checks prior to dispatch.
Fresh Water Generator Gaskets
RA Power Solutions is a one-stop shop for all your problems related to crankshaft grinding, insitu crankshaft repair and grinding, whether there is a requirement for repair services, supply of spare parts, or consulting services. We are respected all over the world as the most trusted and cost-effective company. Contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
