Information on Crankshaft Grinding Machine and Process

It is obvious that every crankshaft requires grinding and polishing. We are giving below a few reasons for the requirement of crankshaft grinding and polishing:
  • Although crankshaft is manufactured out of forged steel due to continuous running it is observed that crankpin and main journal of crankshaft develop taper and ovality more than the limits specified by the engine manufacturer. For removal of excessive taper and ovality there is no option, but to go for grinding of the crankshaft or in case the ovality is not excessive, polishing of crankpin and the main journal is undertaken.
  • Bearing line marks, pitting and rough surface are observed. The reason can be the poor quality of lubricating oil used, non-replacement of lubricating oil filters on time, poor quality of bearings, etc. The crankshaft polishing is recommended in case the bearing line marks and pitting is observed.
  • The seizure of bearing on crankpin or the main journal of the crankshaft is common. In few cases, the bearing material gets embedded on the crankpin and main journal diameter, crankshaft grinding, and polishing is recommended to remove the bearing material and to control the taper, ovality and surface finish and other parameters strictly as per the engine manufacturer’s recommendation.
  • Applications of Crankshaft Grinding Machine:
    In order to attend the above defects in the crankshaft, it is obvious that the crankshaft grinder machine is required to undertake the grinding and polishing of crankpin and the main journal. In older times when the technology was not developed to today’s level, the owners had no option but to disassemble the crankshaft from the engine, pack it and send it to the designated workshop for repairs. In the case of large crankshafts say 5 meters length and above, even as on date there is a number of countries that don’t have facilities of bench type crankshaft grinding machine as it needs heavy investment, highly skilled manpower.
    RA Power Solutions have developed portable, light-weight, easy to operate onsite crankshaft grinding machine having the following features:-
    Introduction of state of art crankshaft grinding machine:-
    • The onsite crankshaft grinding machine introduced by RA Power Solutions about 2 decades back is in real terms technological innovation. It has outdated the heavy-duty bench type crankshaft grinding machines. In fact, numbers of manufacturers of crankshaft grinding machines in Italy, Germany and other countries have closed down the crankshaft grinding machine manufacturing facilities.
    • The machine mainframe is manufactured out of titanium alloy which has the inbuilt property of absorbing vibrations. This is of great benefit as the grinding and polishing of crankpin and the main journal of the crankshaft are possible even while the sailing of the vessel.
    • Compact and light-weight of machine facilitate to transport it to any site in the world by air as accompanied baggage, the machine is designed in such a way that its total weight is kept to a minimum which is easy to handle and costs less in transportation.
    • The machine is designed and capable to achieve closed tolerances strictly as per the manufacturer’s recommendation. It can execute the grinding and polishing of crankshaft of all engine manufacturers and can meet with their stipulated parameters in terms of taper, ovality, surface finish, parallelism, etc.
    • The machine is operated either by a pneumatic turbine or electric motor depending on the customer's choice.
    • Presently the machine is available in the range from 35 mm to 700 mm.
    • Training and maintenance is an important part of our company sales policy. We extend training on dummy crankshafts in our workshop or even a client’s premises.
    • The cost of equipment is of great importance in this time of recession, shipping and industries, in general, is going through.
      •           The cost of the machine is negligible in comparison to the heavy-duty bench-type stationary crankshaft grinding machine.
      • More than 70 machines are sold all over the world and technicians have been trained for maintenance and operation of the machine.
      The crankshaft grinding machine is recommended for onsite crankshaft reconditioning, crankshaft polishing without removal of it from the block; it is possible to undertake grinding and polishing of any cylindrical shaft having a diameter up to 700 mm irrespective of bearing length which can be as high as 600 mm or above.
      Crankshaft Grinding Process:-
      The machine is very handy and can be easily operated for the crankshaft grinding process. To know more please visit our website https://crankshaftgrindingmachine.com/
Location: India

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