In the case of cracks developed in the casting of mechanical equipment, the repair of metal stitching and metal locking is proved to be the best and most successful process. In the case of the engine block and turbine casings, heavy castings are used in mechanical equipment. It is quite difficult to replace them due to cost, time factors and interchangeability issues.
The repair of cracks by metal stitching and metal locking is a cold process. No heat is generated and the same original profile is maintained. In case of cracks developed in the housing of the engine block, the crack is repaired by metal locking and metal stitching is highly recommended as there is no distortion in the central line of the housing takes place.
Metal Locking of Wartsila Diesel Engine
RA Power Solutions have experienced technicians to undertake the metal stitching and metal locking process with a guarantee.
Crack Repair in Grey Cast Iron | Aluminium and Cast Steel Components
We undertake thecrack repair in grey cast iron, aluminium and cast steel components by a cold process named metal stitching, metal locking, and metal surgery. As a diesel engine repair and overhaul company with four decades of experience, we understand the criticality and load factor of the major components of engines. For the crack repair of components, planning is done based on its application, stress, and load characteristics. The use of a special metal lock and keys is decided by our experienced engineers based on the extent of cracks. All the repairs undertaken by us by metal stitching and metal locking of grey cast iron, aluminium, and cast steel components are guaranteed for satisfactory performance.
Metal Stitching of Jenbacher Engine Block Under Process
Metal Stitching of Jenbacher Engine Block
We extend metal stitching services all over the world including countries like Madagascar, Oman, Qatar, Philippines, Bahrain, Srilanka, Bangladesh, Myanmar, Turkey, Nigeria, Greece, Saudi Arabia, UK, Dubai, Malta, and Cyprus.
For more information on Metal Stitching of Crack Casting, crack repair in grey cast iron and aluminium, metal stitching services, and cold metal stitching 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 for last more than 4 decades. The genuine and high-quality spares are very important for satisfactory performance of engine.
RA Power Solutions Pvt. Ltd. deals in spare parts and supporting equipments of following engine: 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.
The spare parts are procured from the OEMs and inspected at our works by the experienced technicians. Generally, these parts are 20 to 30% cheaper than the engine manufacturers.
RA Power Solutions also deals in Reconditioned Ship Engine Parts. The engines which are not in operation are sourced parts are calibrated and reconditioned as per the manufacturers specifications.
We strongly feel that considering the high cost of new spare parts, it is advisable to use the reconditioned parts which are calibrated and are within the manufacturer’s specifications. This again saves the operation cost considerably.
Following new and reconditioned spare parts of high-capacity diesel engine are available in stock:
PISTON RODS
CAMSHAFTS
CYLINDER HEADS
CONNECTING RODS
CYLINDER LINERS
CRANKSHAFTS
COMPLETE AUXILIARY ENGINES
ENGINE FRAME AND BEDPLATES
FUEL PUMPS
PISTONS
PISTON RODS
CAMSHAFTS
CRANKSHAFT
CYLINDER LINERS
CYLINDER HEADS
For more details on reconditioned ship engine parts, Spare Parts of Yanmar Engine, and reconditioning of spare partsplease contact us by email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
White metal Babbitt bearing is used in engines, turbines, alternators, pumps, and various other Rotating equipment. It is important that the grade and quality of white metal which is used for babbitting of bearing is selected based on the load characteristics, and operational condition of the Babbitt bearing.
The white metal babbitting is done by a centrifugal system and this ensures that the Babbitt white metal bonds properly with the steel base of the bearing. The quality of the Babbitt bearing is checked by ultrasound for bonding.
White metal bearings
Bearing Remetallic Services
Bearing Remetallic Services for all applications of white metal Babbitt bearing are provided by us. We are rather industry leaders in providing bearing remetallic services.
Although the precision machining is of great importance the process of bonding babbitt white metal to a bearing steel shell is as critical as close dimensions of the bearing which is under the process of remetallic. We have a separate zone for undertaking bearing remetallic services equipped with digitalized, temperature control furnace, centrifugal equipment with all latest instruments. We ensure that the bonding of the white metal with the steel lining after bearing remetallic services is dense and without any pin holes.
RA Power Solutions Pvt. Ltd. undertakes babbitting of white metal bearing up to 1500 mm inner diameter. The babbitting is done by experienced technicians and is done by the centrifugal process which ensures that Babbitt white metal forms a uniform layer. The grade and quality of white metal used for babbitting are carefully selected.
The in-house machining facility ensures that all the parameters of bearings are maintained as per the manufacturer’s specifications and tolerances.
Babbitt Metal | White Metal | Babbitt White Metal Manufacturer
RA Power Solutions Pvt. Ltd. specializes in rebuilding and manufacturing white metal Babbitt bearings having different applications like gearbox bearing, engine bearing, turbine, alternator bearing, etc. We are geared up for white metal bearings rebuilding or manufacturing of new bearings on a 24*7 basis.
Understanding the importance of the composition and quality of Babbitt white metal, we manufacture the white metal strictly as per the grade specifications. A lot of care is taken to maintain the percentage of composition of various ingredients used at the time of manufacturing of Babbitt white metal. The Babbitt white metal is supplied in various forms and shapes as per the client’s requirements. We are the largest exporter of Babbitt white metal to countries like Saudi Arabia, Nigeria, South America, etc.
Bearing Manufacturers
White metal babbitt bearings up to 1500 mm for alternator, rotor, turbine, engine, and pump shaft are manufactured. We also undertake babbitting of old bearings which get damaged due to accidents or normal wear and tear.
Daihatsu Engine under size Bearings
We maintain a large stock of Daihatsu crankpin and main journal standard and under-size bearings. The bearings of all models of Daihatsu engines installed on ships are available with us ready in stock. The undersize Daihatsu engine bearing for the models which are not manufactured by Daihatsu are also available with us. We also maintain a large stock of Daihatsu engine spare parts.
Yanmar Engine Bearings and Spare Parts
Large stock of Yanmar engine bearings and spare parts for all popular models are maintained by us. The undersize crank pin and main journal bearings of the Yanmar engine which are not commonly available are maintained in stock in order to meet the urgent requirement of undersize bearings of our clients after grinding of crankpin and main journal of Daihatsu crankshafts after repairs. We also have large stock of spare parts for engines like Yanmar Wartsila, Mirrlees Black Stone ESL, MAJOR K series Generators, Ruston, Allen, MAN B& W, Daihatsu, MAK, SULZER, MTU, PIELSTICK, CATERPILLAR, BERGEN, MVM, NOHAB POLAR, ALPHA B &W, HATLAPA, SPERRE, etc.
White metal Babbitt bearings are supplied all over the world including countries like Brazil, Egypt, Panama, Russia, Argentina, Ecuador, Czech Republic, Senegal, Fiji, France, Germany, Dubai, Kenya, Chile, and Mexico.
For more information on babbitting metal, white metal bearing manufacturers, babbitt white metal manufacturer, bearing remetallic or bearing manufacturing company, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com call us at +91 9582647131 or +91 9810012383.
The large bench type crankshaft grinding and polishing machines are outdated and are replaced by light weight, portable onsite grinding and polishing machine. The machine is driven either by pneumatic motor or is electrically operated.
The objective of using pneumatic motor is to make machine compact which can be inserted from the inspection window of the engine block for grinding of crankpin and main journal.
Pneumatic Motor Mounted on Machine
Crankshaft Grinding and Polishing
Portable Crankshaft Grinding and Polishing Machine is light weight and can be carried to the work site by the technicians. It is easy to assemble and operate. Any technician with machine shop experience can easily operate this machine. The crankshaft grinding and polishing machine is capable of maintaining taper, ovality and high surface finish after operation and all the dimensions of crankpin or main journal can be controlled as per the manufacturer’s requirement.
Assembly of Insitu Crankshaft Grinding Machine
RA Power Solutions Pvt. Ltd. designs and manufactures as per the customer’s requirement. We have capability of designing and manufacturing the grinding machine up to 700 mm in terms of diameter.
More than 60 crankshaft grinding and polishing machines have been supplied all over the world which are performing satisfactory. The cost of on site machining services is very low.
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 grinding machine 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.
In cases of this form of failure, it is typically seen that hardening occurs, which results in the development of hard spots and hard areas next to the soft sections, even up to the scale of 700 HB. According to the manufacturer’s specifications, the extraordinarily high increase in the crankpin journal hardness is not desirable so the crankshaft is heated up and annealed.
Onsite Crankshaft Grinding in a Power Plant
Crankpin After Repair by Crankshaft Grinding Machine
In order to reduce the hardness and bring it to the limits specified by the manufacturers, RA Power Solutions has undertaken the annealing process in-house and have also availed the services of leading well-known European companies offering annealing services.
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 , Inspection of Crankshaft 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.
For more information on Inspection of Crankshaft, onsite crankshaft grinding, grinding of crankshaft, crankshaft repair of high-capacity diesel engine email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
Crankshaft grinding and polishing is an important activity which is required after running of engine for a long time as due wear and tear taper and ovality is created. Again in case of failure of bearing grinding and polishing of crankshaft is required. In olden times it was necessary to remove the crankshaft from the block and send it to the designated workshop for grinding and polishing of crankshaft.
Crankshaft Repair
The removal of crankshaft from the block involved disassembly of complete engine, packing, and transportation to the workshop resulting to high downtime and expensive. RA Power Solutions has developed, design, and manufactured on site crankshaft grinding machine which can undertake grinding of crank pins or journals up to the diameter of 700 mm. The machine is capable of maintaining the tolerance within 0.02 mm in terms of taper and ovality. It is very easy to operate and needs minimum training.
The machine is lightweight and can be taken to the site. The machine is in two parts and can be inserted in the engine block through the inspection window, facilitating grinding of the CR Pin without removal of the crankshaft. The grinding and polishing is undertaken by same machine. RA Power Solutions suggests polishing and grinding, if necessary, the crankshaft whenever it is open for major overhauling. This will considerably enhance the life of the crankshaft, bearing, and engine. The machine gets its drive from a pneumatic turbine, which is again lightweight. The drive is also given by an electrical motor where the air supply is not available. The assembly of the machine and its operation can be seen on our YouTube channel
RA Power Solutions has supplied more than 100 machines to clients based all over the world who are more than satisfied with its performance, quality, and ease of operation. The crankshaft grinder is manufactured by us to cater to the crankshaft diameter ranging from 35 mm to 700 mm. All the parameters, specifications, and tolerances as required by the engine manufacturer are maintained after undertaking the Crankshaft Repairs by the crankshaft grinder manufactured by RA Power Solutions.
For more information on Crankshaft Repairs, crankshaft repair made easy, crankshaft grinding, crankshaft grinding and polishing, in situ crankshaft grinding machine, and repair of crankshaft email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
Company is providing on site repairs of major components of diesel engine, pumps, compressors and all type of rotary equipments mainly crankshaft, engine block, cylinder heads, liners. The repairs are undertaken by trained and experienced technicians equipped with latest breed of specially designed and developed portable machining equipments. Repairs are executed strictly as per the guidelines and tolerances stipulated by the manufacturers. Company is involved in supplying spare parts and supporting equipments used in diesel power plant. The parts and the supporting equipments are directly sourced from the OEMs and are competitively priced. White metal bearings are manufactured as per the drawing or sample. Rebabbitting of old bearing is undertaken by centrifugal process. The white metal used is sourced from the reputed companies and in house facilities for quality checks are in place.
For more details regarding onsite crankshaft grinding, in situ crankshaft grinding machine, rebabbitting of bearing, engine overhauling, and engine block repair, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
