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Repair of Crankpins of MAN B&W 8L 23/30H Engine


We were approached by a ship manager advising regarding the excessive ovality developed in 8 numbers of crank pin of the crankshaft of MAN B&W 8L 23/30H.

THE MAIN DETAILS ARE AS FOLLOWING:-

S. NO

Crankshaft Details

 

1

Engine Make

MAN B&W

2

Engine Model

8L 23/30H

3

Crankpin Diameter Standard

185 MM

4

Crankpin Bearing Width

72 mm  

5

  Name of Vessel

MV JAOB

 

Our technicians boarded the vessel and inspected the crankshaft.

FOLLOWING ARE THE MAIN OBSERVATIONS:-

  • Surprisingly, all 8 number of crank pins developed the ovality ranging between 0.12 mm to 0.20 mm.
  • The crankpins were subject to hardness check and it was observed within limits.
  • Crack detection test was undertaken by MPI with high intensity Magna flux torch and no crack and abnormality was observed.
  • The deflection and visual inspection was done and was found acceptable within limits.
  • The crank pins having standard diameter of 185 mm and bearing length of only 72 mm were ground by 0.50 mm undersized maintaining the tolerance within  0.02 mm.
  • The engine was put back into operation.

 

This job was executed by us in October 2018 and is performing satisfactory.

RA Power Solutions has a technology, experienced technicians through which the repair services are offered.

Our repair charges are the lowest in the world.

Avail the benefit of our experience of successfully repairing more than 10,000 crankshafts in the last 40 years and stop contacting the companies who imitate the equipment, websites, procedures etc.

Insitu Crankshaft Grinding of MAN B&W 8L 23/30H            Repair of Crankshaft of MAN B&W 8L 23/30H

 

Crankshaft Repair of MAN B&W 8L 23/30H Engine by Compact and Portable Crankshaft Grinding Machine                                                                       

Technician doing Crankshaft Grinding of MAN B&W 8L 23/30H

 

We have been regularly working for various models of engine like Wartsila , Daihatsu , MWM , Caterpillar , MAN , MAK , B&W , Sulzer , Bergen , Detroit Diesel, Stork Werkspoor , Pielstick , Deutz , Yanmar , MTU , Cummins , Nohab Polar , Caterpillar , Mitsubishi , Yanmar , MAK and many more.

This blog is written by Mr. Raj Shahani (Managing Director of RA Power Solutions India Pvt. Ltd.).

Mr. Shahani is a highly experienced business leader with rich experience of more than 40 years in the field of Power, Heavy and Shipping industry. He is Technical Adviser to many shipping and heavy industries across the globe.

Mr. Shahani is one of the most enthusiastic professional and he has all the brilliance of an exemplary leader. Mr. Shahani is an extremely effective coach and mentor of teams and is adept at providing leadership in a global, cross-cultural environment.

For more information, please email us at rajshahani@rapowersolutions.cominfo@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Visit our website: http://turbineshaft.in/

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