Turbine, Rotor and Alternator Shaft Grinding and Polishing

Failure of bearing due to over load or accident results to development of taper and ovality on turbine, alternator, rotor shaft. In certain cases the deep bearing line marks are developed and bearing surface becomes rough. This needs to be corrected.

Repair of Turbine and Alternator Shaft
                    Repair of Turbine and Alternator Shaft

RA Power Solutions undertake grinding and polishing of crankshaft, rotor shaft, turbine shaft, alternator from last 4 decades. We are the leaders in extending the grinding and repair services. The main features of turbine, alternator, rotor shaft grinding and polishing are as following:

I) Initial inspection of turbine, alternator, and rotor shaft is undertaken by experienced technicians. They carry all latest instruments to check dimensions, hardness, surface roughness, crack detection, taper and ovality. It is of great importance that proper inspection by Qualified and Experienced Engineer is conducted.

II) Latest breed of turbine, alternator, rotor shaft grinding and polishing equipment is available with us having capacity up to 700 mm diameter.

Grinding & Repair of Crankshaft After Major Accident
Grinding & Repair of Crankshaft After Major Accident

III) Onsite grinding and polishing equipment used by RA Power Solutions is light and compact. Easy to carry to site and can be fitted on the damaged diameter of turbine, alternator and rotor shaft. It is important as minimum dis assembly of the parts is required.

IV) The turbine, alternator, rotor shaft grinding equipment is capable of maintaining close tolerance even up to 20 microns with surface finish of 0.15 Ra value which is far better then the international standard.

V) All the repairs of turbine, alternator, and rotor shaft are executed with guarantee.

RA Power Solutions also manufactures new white metal Babbitt bearing up to 1500 mm and rebabbitting of old bearings which get worn out or damage is done.

Grinding of RotorShaft
Grinding of RotorShaft
Grinding of Main Journal on Board a Vessel
Grinding of Main Journal on Board a Vessel

Crankshaft Grinding and Crankshaft Repair by Experienced Technicians

Crankshaft grinding and crankshaft repair are important for satisfactory performance of engine. RA Power Solutions Pvt. Ltd. has been undertaking crankshaft repair onsite by portable, light weight crankshaft grinding machine. The crankshaft repair is executed of crankshaft diameter ranging from 60 mm to 700 mm.

We have team of trained and dedicated technicians who are deputed to the site with crankshaft grinding machine along with necessary instruments. The crankshaft repair is undertaken without removing the crankshaft from the entablature.

The crankshaft grinding machine used to undertake crankshaft repair is of latest design having minimum vibrations. This facilitates our technicians to undertake crankshaft repair even while the vessel is sailing. The tolerance after crankshaft grinding and crankshaft repair is maintained within 10 to 20 microns in terms of taper and ovality.

Crankshaft Repair is in Process
          Crankshaft Repair is in Process

The repair of crankshaft and overhauling of engine while sailing of the vessel between two ports results to the considerable saving to the ship owners as there is no need of holding the vessel at port or anchorage.

The crankshaft repair executed by us is guaranteed for the satisfactory performance. As on date we have executed more than 10,000 repair of crankshaft all over the world.

Crankshaft Grinding of MAN Diesel Engine
Crankshaft Grinding of MAN Diesel Engine
Crankshaft Grinding of Wartsila Diesel Engine
Crankshaft Grinding of Wartsila Diesel Engine

 

 

 

 

 

 

 

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

Crankshaft Grinding

Crankshaft grinding is undertaken by RA Power Solutions having four decades of experience in repair of crankshaft. We have technicians who are trained in our workshop giving them the on job training for Grinding of crankshaft and repair of Crankshaft.

Crankshaft Grinding on Board a Vessel
Crankshaft Grinding on Board a Vessel

We use latest design of crankshaft grinding equipment which is vibration free and is capable to maintain close tolerances in terms of taper and ovality. Crankshaft grinding and crankshaft polishing is done in one setting thus reducing the time of crankshaft repair considerably.

Crankshaft Grinding Machine- Vibration Free
Crankshaft Grinding Machine- Vibration Free
Crankshaft Repair
Crankshaft Repair

 

 

 

 

 

 

 

Crankshaft grinding and crankshaft repair is also undertaken on board the vessel and while the vessel is sailing.

Crankshaft Repair by Portable Grinding and Polishing Machine

RA Power Solutions has four decades of experience undertaking grinding and polishing of crankshaft. We can undertake onsite grinding and polishing of crankshaft from 50 mm to 700 mm. Team of experienced technicians are deputed to the site with light weight, portable crankshaft grinding machine. The repair of crankshaft is done without removing the crankshaft from the engine block. This saves time and cost involved in disassembly of crankshaft, packing and transportation of crankshaft to the workshop.

Potable Crankshaft Grinding Machine
Potable Crankshaft Grinding Machine
Crankshaft Grinder
Crankshaft Grinder

 

 

 

 

 

 

 

Worldwide the repair of crankshaft in workshop is outdated. We depute our technicians all over the world with portable equipments for repair of crankshafts. The repair is executed strictly as per the manufacturer’s specifications and tolerances. The crankshaft repairs are guaranteed for satisfactory performance.

Repair of Crankshaft by Crankshaft Grinding Machine
Repair of Crankshaft by Crankshaft Grinding Machine
Crankpin After Grinding of Crankshaft
Crankpin After Grinding of Crankshaft

 

 

 

 

 

 

 

The recent introduction of vibration less portable onsite crankshaft grinding machine facilitates us to execute crankshaft repair while vessel is sailing.

Our technicians have seaman passports and they can board the vessel from one port and disembark from another port. Thus, saving the cost of anchorage or stay at port.

Crankshaft Repair on Board the Vessel
Crankshaft Repair on Board the Vessel
Offshore Grinding of Crankshaft is in Process
Offshore Grinding of Crankshaft is in Process

 

 

 

 

 

 

 

We also manufacture crankshaft grinders which are priced low and easy to operate. These revolutionary machines are recommended for shipping companies, repair workshop heavy engineering company, etc.

For more information, call us on +91 – 124 – 4378292 , +91 9213604692 or email us on rajshahani@rapowersolutions.cominfo@rapowersolutions.com

Insitu Grinding of Crankshaft

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.

Crankshaft

Grinding of Crankshaft by Crankshaft Grinder
Grinding of Crankshaft by Crankshaft Grinder

It is observed that due to seizure of bearing in most of the cases, crankshaft loses its alignment and develops bend. The alignment of crankshaft is important and it is maintained at the time of machining/grinding of crankshaft.

RA Power Solutions undertakes straightening of crankshaft onsite irrespective of the length of crankshaft, diameter of CR pin and main journal. The straightening of crankshaft is done by peening procedure for which our technicians are trained. Number of jobs has been successfully executed for straightening and onsite grinding of crankshaft.

Crankshaft Grinding
Crankshaft Grinding in Process

Revolution in Crankshaft Grinding

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)

Portable Crankshaft Grinding and Polishing Machine

The large bench type crankshaft grinding and polishing machines are outdated and are replaced by portable, light weight 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
Pneumatic Motor Mounted on Machine

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 grinding 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
Assembly of Insitu Crankshaft Grinding Machine

RA Power Solutions Pvt. Ltd. designs and manufactures the onsite crankshaft grinding and polishing machine 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 crankshaft grinding and polishing machine is very low.