In Situ Turbine Journal Repair

Turbine Shaft Repair services offered includes handling onsite repairs of Gas, Steam, Hydro turbines and find support in industry sectors like Petrochemical, Shipping, Power Industry. These services involve grinding & polishing of rotor shaft, turbine shaft, alternator shaft as well as also include offering support for rebuilding rotor shaft, alternator shaft and turbine shaft. Here, while delivering the services we ensure that repairs offered are reliable and cost-effective as per highest international standards.

Features:

• Expertise in offering repair service support for turbine shafts
• Expertise in handling onsite repairs of Gas, Steam, Hydro turbines
• Services finding support in industry sectors like Petrochemical, Shipping, Power Industry
• Services offered involving grinding & polishing of rotor shaft, turbine shaft, alternator shaft
• Offering support for rebuilding rotor shaft, alternator shaft and turbine shaft
• Also meeting the demands of offering support for damaged turbine casing through metal stitching  and metal lock process
• Repairs offered are reliable and cost-effective
• Offering services as per highest international standards

Product Details:

Turbine or Alternator Journal Rebuilding and Grinding

We undertake on site repairs of turbine and alternator journals by using most modern equipments available. We have highly skilled team of engineers, in-house facilities for crack detection, hardness and surface finish test and rebabbitting and manufacturing of white metal bearings. Most recently we have executed a job of Turbine Journal for Shandong Jinan Power Equipment, China.

In case of excessively worn out or damaged journals we undertake rebuilding and on site grinding as per standard size.  

Features:

• Tolerance in terms of Taper and Ovality maintained with in 20 microns resulting to minimizing of vibrations
• Surface finish in terms of RA value maintained with in 0.30 microns.
• In house facilities for crack detection, hardness and surface finish test.
• Facility for rebabbiting of bearings  and manufacturing of white metal bearings
• In situ Equipment available to execute repair of Turbine and Alternator journal up to diameter of 700 mm. and can be extended up to 1500 mm. dia.

Jobs executed:

• More than 100 jobs have been successfully executed
• Recently, we have executed a job of Turbine Journal having following major specification:

Product Details:

Turbine Shaft Grinding services offered are handled by experienced industry professionals that allow us in achieving flawless execution standards and in supporting the needs of eliminating downtime associated with disassembly, transportation equipment reinstallation. Here, we have with us extensive experience in offering onsite repairs of Gas, Hydro and Steam turbines as well as offer service support to clients from Power, Petrochemical & Shipping industry.

Features:

• Expertise in offering grinding services for turbine shafts
• Flawless execution of services that helps in eliminating downtime associated with disassembly, transportation equipment reinstallation
• Extensive experience in offering onsite repairs of Gas, Hydro and Steam turbines
• Offering service support to clients from Power, Petrochemical & Shipping industry
• Offering support for rebuilding Turbine Shaft
• Carrying out repair support for damaged turbine casing using metal stitching and metal lock processes
• Offering reliable and cost-effective repair support
• Delivering services as per international standards

Product Details:

RA Power Solutions offer Crankshaft Grinding And Repair Services. We have developed specialised portable on site crankshaft grinding machine which can be set up on the crankshaft requiring repair using the latest techniques to ensure correct alignment and accuracy.

In situ crankshaft grinding Features:

• With portable in situ crankshaft grinding equipment our technicians come to your works or vessel to repair worn out or damaged Crankshaft Crankpins, Crankshaft Main Journals, Thrust Faces, Keyways and other parts of your Marine or Industrial Crankshaft quickly and cost effectively using insitu grinding. We do this using our own crankshaft grinding equipment. This leads to a great time and cost saving in most cases.
• There is no need dismantle crankshaft and to arrange for safe transport to a workshop which is usually far away.
• We have developed specialised portable on site crankshaft grinding machine which can be set up on the crankshaft requiring repair using the latest techniques to ensure correct alignment and accuracy. The new generation on site crankshaft grinding equipment can do machining and polishing in one setting itself as there is no need of separate tools for grinding and machining.
• Crankshaft can be ground from the CR Pin dia of 50mm upwards.
• Special purpose tooling can be designed and developed incase of limitations of working space in engine block.
• We have vast experience of having repaired over 10,000 shafts which includes crankshaft repair on site and also in our workshop.
• We have availability of tools and drawings of crankshaft for most engines

Area of application:

• Compressor Crankshafts
• Main engine Crankshafts
• Auxiliary engine Crankshafts
• Cylindrical Shaft and rotating shaft of mechanical equipments

Other Features:

• Light weight portable Insitu crankshaft grinding equipment
• Trained engineers and mechanics skilled in the art of in-situ crankshaft grinding
• Tolerance of CR Pin and Main Journal maintained strictly as per OEM Specifications
• Technician accompany with senior engineer to plan and execute the job of in situ crankshaft repair
• Portable testing equipments of latest technology used for inspection purposes which includes MPT, Die Pentrant, hardness, surface test etc

Grinding of Large diameter:

• In order to do on site grinding of large diameter, bearing width and high stock removal from the CR pin, we suggest the use of grinding equipment, which is placed on the fillet radius of the Pin as reference for the grinding stone
• The machine rotates around the Crank Pin at lower RPM and the grinding is carried out by pneumatic grinder operating with suitable grinding stone. This process is recommended only if radius profile is not worn out

Additional Information:

• Delivery Time: 5-6 weeks
• Packaging Details: as per dimensions of machine

Onsite crankshaft grinding services are extended by R A Power Solutions all over the world for 45 years. We have the necessary tooling to execute the repair of damaged crankshafts up to 700 mm in diameter. We maintain the tolerance as per the manufacturer's requirement. The onsite crankshaft grinding of all popular makes and models is executed by us. We are giving below the details of a few models of MAN B&W, BERGEN, YANMAR, DAIHATSU, and WARTSILA engine crankshafts executed by us recently. All the engines are performing satisfactorily after repair of crankshaft.

RA Power Solutions has successfully executed onsite crankshaft grinding and repair of different engines in over 100 countries worldwide. Our services are trusted across India, UAE, Singapore, Indonesia, Malaysia, Bangladesh, Saudi Arabia, Qatar, Kenya, Nigeria, Greece, Turkey, Spain, the UK, USA, Brazil, and many more. With over 45 years of experience, we provide fast, reliable, and cost-effective crankshaft repair solutions to marine, offshore, and industrial clients globally.

Contact us today for onsite crankshaft repair, crankpin polishing, repair of crankshafts, and in insitu crankshaft grinding.

Onsite Grinding of Wartsila VASA has been executed by RA Power Solutions recently at a reputed diesel power plant in Madagascar. It was reported that one crankpin of the Wärtsilä VASA engine model 12V32LN experienced a crankpin bearing failure, which caused damage to Crankpin Number One of the crankshaft. The crankshaft details are given below:

(I) On a visual inspection of crankpin number one, having a standard diameter of 270 mm, it was found to be damaged with deep line marks, pitting, and a rough surface.

(II) The crankpin was subjected to dimensional inspection after cleaning the embedded bearing material. The following measurements were observed for Crankpin Number One:

Minimum Diameter: 269.45 mm

Maximum Diameter: 269.89 mm

Ovality Observed: 0.55 mm

(III) All other crankpins were visually inspected, and no damage or marks were observed.

(IV) As per standard procedure, Crankpin Number One was subjected to a crack detection test using the MPI process, and hardness testing was also carried out. No abnormalities were observed

(V) Crankpin Number One was undersized by on site crankshaft grinding equipment. The diameter was reduced by 1 mm to control ovality and to remove the line marks observed after the bearing seizure. The final crankpin diameter was maintained as 269.00 – 0.02 mm.

RA Power Solutions, during its long-standing presence in the industry, has executed repair of over 1300 Wartsila engine crankshafts of various models. The most popular models serviced include WARTSILA 12V32 and WARTSILA 18V32, widely installed in diesel power plants around the world.

At RA Power Solutions, we specialize in on site crankshaft grinding for Wartsila, Yanmar, MAN, and MAK engines, offering a reliable and cost-effective solution to repair damaged or worn crankshafts without removing them from the engine.

This advanced service not only eliminates the need for engine disassembly and costly transportation but also significantly reduces downtime. Using state-of-the-art portable grinding equipment, our expert technicians restore the crankshaft’s dimensions and surface finish to OEM standards, ensuring optimum engine performance.

RA Power Solutions has been providing onsite crankshaft grinding and polishing services globally for over 45 years.We provide services across diesel power plants, engineering firms, the shipping industry, and more. We extend in situ crankshaft grinding services upto 700 mm in terms of diameter and regardless of the engine’s make or model. Below is a summary of some recent crankshaft repair jobs we have successfully completed both in India and internationally. The table outlines engine make, model, crankpin dimensions, and the location and date of execution: