Crankpin grinding, and crankpin repair by in situ crankshaft grinding machine is offered by RA Power Solutions through a highly motivated team of technicians who have the experience of four decades in crankshaft grinding and crankshaft repair. It is important that the crankshaft is initially inspected by experienced technicians in order to detect the fault after the damage or accident.

The following are the major parameters that are examined before the repair of the crankshaft:

• Minimum and maximum diameter of the crankpin and main journal, taper, and ovality is checked.
• Run out of main journals and deflection readings are taken to verify the loss of alignment.
• A complete non-destructive test using MPI and ultraviolet lamp for heat cracks is undertaken of crankpins and the main journal of the crankshaft.
• The crankshaft is also subject to a hardness test.

Based on the preliminary inspection reports prepared by the technicians the repair procedure is planned. The onsite crankshaft grinding machine used for the crankshaft repair is lightweight and is placed on the damaged crank pin from the inspection window of the engine block. There is no requirement of removing the crankshaft from the Entablature and send it to the workshop as bench-type grinders are now outdated.

The crankshaft grinding and crankshaft polishing is undertaken to maintain taper and ovality, surface finish as per the OEMs requirement. RA Power Solutions have facilities to undertake in situ crankshaft grinding, crankshaft polishing, and repair of crankshaft up to the diameter of 700 mm without removing the crankshaft from the engine block.

During and after the repairs, all the major technical parameters are checked and a calibration report is prepared. It is possible to execute the crankshaft grinding and crankshaft repair on board a vessel while it is sailing. Technicians have seaman passports and can travel to any part of the world in the shortest possible time, thus attending to the damaged engine in a short time. We are class-approved and stand to guarantee the satisfactory performance of the crankshaft after repairs.

We are commonly working on the following engines:

Wartsila, Daihatsu, Mirrless Blackstone, Yanmar, Allen, MAK, MAN, B&W, Sulzer, Caterpillar, Fiat, Mitsubishi, MTU, Cummins, Deutz, Nohab Polar, Wartsila 12V32, Wartsila 18V32, Pielstick, Bergen, Detroit Diesel, MaK 552 , MaK 453, MaK 451 AK, Niigata, MaK 452 AK, Ruston, Lister Blackstone K8 Major MK2, Volvo Penta, etc.

For more information on insitu crankshaft grinding repair, insitu crankshaft repair and grinding, onsite grinding machine supplier, and repair of crankshaft contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.