Tag: onsite crankshaft repair

Compressor Crankshaft Grinding | Marine Crankshaft Grinding | Engine Crankshaft Grinding And Polishing – RA Power Solutions

RA Power Solutions is known as a leader in offering onsite repair of crankshaft worldwide with forty years of experience in this field, the company’s endeavor is always to save the Crankshaft from rejection.

Crankshaft Grinding 550 mm diameter
Crankshaft Grinding 550 mm diameter

The crankshaft meets with serious accidents and is even rejected by the European Repair Companies attended by RA Power Solutions and is successfully repaired. This is possible because of having technicians who have hands-on experience in repairing more than ten thousand crankshafts.

Crankshaft Grinding Mirrless Blackstone
Crankshaft Grinding Mirrless Blackstone
Crankshaft Grinding Wartsila 18 V32
Crankshaft Grinding Wartsila 18 V32

All crankshafts are initially checked and inspected to ensure that they are acceptable for reuse or for repair. The onsite crankshaft grinding and crankshaft polishing are undertaken through the window of the engine block. Due to continuous innovation in the design and technology of crankshaft grinding machines manufactured and used by us, it is possible to maintain the dimensional tolerances strictly as per the original equipment manufacturer. The crankshaft grinding and polishing are done in the minimum possible time. Thus, reducing the breakdown time of the equipment considerably.

Onsite Crankshaft Repair
Onsite Crankshaft Repair
Repair of Crankshaft MAN B&W
Repair of Crankshaft MAN B&W

Presently, we are undertaking crank-pin and main journal grinding and repair up to 700 mm and are in the process of increasing the capacity up to 1000 mm. We undertake onsite crankshaft grinding of all popular makes of engine and their model. Few of them are as following-

Insitu Crankshaft Grinding
Insitu Crankshaft Grinding
Offshore Grinding of Crankshaft is in Process
Offshore Grinding of Crankshaft is in Process

Wartsila 6R32, 12V32, 18v32, Mirrlees Black Stone ESL, MAJOR K series Generators, Ruston, Allen, Yanmar, MAN B&W, Daihatsu engine, etc. For more details on the marine crankshaft repair, and crankshaft grinding machine, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Onsite Crankshaft Repair | Crankshaft Grinding | Crankshaft Reconditioning- RA Power Solutions

Onsite Crankshaft Repair, Crankshaft Grinding, and Crankshaft Reconditioning have been undertaken by RA Power Solutions for the last forty-four years. The company has technicians who are trained to undertake onsite crankshaft repairs strictly as per the manufacturer’s specifications stipulated in the manual.

All technicians have valid CDC and can travel on short notice anywhere in the world to board the vessel. The onsite crankshaft repair and onsite crankshaft grinding equipment used by RA Power Solutions has a main structure manufactured out of Titanium steel, which results in absorption of Vibration while the onsite crankshaft grinding machine is in operation in high seas with turbulence. The quality after the reconditioning and repair of crankshaft is of Great Importance and is maintained. The following checks are undertaken.

Repair of MAN Engine is in Process
Repair of MAN Engine is in Process

Quality of a Re-Machined Pin or Journal

The quality of a pin or journal after machining has to meet the following requirements:

  • Geometrical tolerance in accordance with manufacturer specifications.
  • A blueing check has to be carried out on the re-machining surface. Blueing Shells: Min. Width is equivalent to Journal or Crankpin dimensions, respectively. Min. Length is equivalent to 1/5 of the Journal or crank-pin circumference.
  • Required contact area: Min 35% equally distributed over width and circumferences.
  • Free of hairline cracks: Journal or crank pin to be tested by means of Magnetic Particle crack detection method.
  • Free of Martensite: The microstructure is to be tested for edged areas of martensite structure will replicas or micro etching with 5% nitric acid in alcohol (Nital) applied to the pin after polishing.
  • The maximum admissible hardness of remaining local hardsports: However, such local hardsports are not tolerated around the fillets and the bores for lubrication.
Onsite Grinding & Repair of Crankpin is in Process
Onsite Grinding & Repair of Crankpin is in Process
Onsite Repair & Grinding of Crankshaft
Onsite Repair & Grinding of Crankshaft

For more information about onsite crankshaft repair and grinding, crankshaft grinding, onsite crankpin grinding, etc. Please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.