Main Journal Grinding

 Diesel engines are operated continuously irrespective of its application whether they are installed in diesel power plants, heavy industry or on ships. Maintenance schedule of diesel engine is followed in most of the cases as per the engine manufacturer’s manual. The dedicated team of technicians and engineers take care of day to day maintenance and operation of the engine. Inspite of all the precautions taken, it is observed that the major accidents in crankshaft takes place, few of the reasons are as following:-

Crankshaft failure: -

  • Use of non standard lubricating oil or using it for extended time without changing it.
  • Use of bearings beyond the operating hours specified in the maintenance manual of the engine manufacturer.
  • Use of substandard lubricating oil filters and using them beyond the specified hours.
  • Not maintaining the lubricating oil temperature and oil gap as per the maintenance manual.
  • Use of substandard quality of bearings.
  • Not carrying out the periodical inspection of crankshaft at the time of undertaking maintenance.
  • Non-calibration of crankpin and main journal diameter for taper and ovality.
  • Ignoring of crankpin and main journal linemarks, pitting, rough surface.
  • Increase in deflection readings.
  • Non-calibration of connecting rods big end bore and small end bore.
  • Non-replacement of connecting rods in case of abnormalities observed.
  • Non-inspection of connecting rods, bolts for cracks or distortion and tightening torque.

As mentioned the crankshaft failure can cause due to not paying attention on above.

RA Power Solutions Pvt. Ltd. is working on crankshaft of medium and high-capacity engine, 2-stroke and 4-stroke engine for four decades and strongly suggest that all the parameters as mentioned in the maintenance manual of the engine manufacturer should be checked. The checks mentioned above are of great importance and we have experienced that most of the crankshaft and engine Get damage due to ignoring the above points, the user can extend the life of engine considerably by following the above checks.

RA Power Solutions Pvt. Ltd. undertakes onsite repair of crankpin journal and main journal Grinding of the crankshaft.

Following are the main features:-

  • We undertake crankshaft grinding, repair of crankshafts having diameter from 35 mm to 700 mm irrespective of the length of the crankshaft.
  • The crankshaft repair is under taken onsite, there is no requirement of removal of crankshaft from the engine block.
  • All the parameters like taper and ovality, surface finish as mentioned in the maintenance manual are strictly maintained.
  • Crankshaft journal repair is taken onsite and by use of the latest crankshaft grinding machine, the repairs are done in minimum time reducing the down time considerably.
  • We can depute technicians in a short notice all over the world and our technicians have valid Indian CDC. We also depute our engineers to undertake reinspection of the crankshaft with the calibrated instrument and regrinding of the crank journal if required can be done on the spot.

This blog is written by Mr. Raj Shahani (Managing Director of RA Power Solutions). He has forty years of experience in the field of engine repair and is a technical adviser to various shipping and heavy industries based all over the world.

Content Source:

https://crankshaftgrindingrepair.com/blog-details.php?blogname=Crankshaft-Failure-Crankshaft-Journal-Repair

Main Journal Grinding


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