Details of CrankShaft used in Internal combustion Engine.

In Internal combustion Engine various parts are used to oerform it as a Machine,out of that CrankShaft is one of the most important part used in I.C. Engine.The construction and its details are as below.To convert Reciprocating motion of the Piston into Rotary motion,the CrankShaft and Connecting Rod combination is used.The CrankShaft which is made by Steel Forging or Casting is held on the Axis around which it rotates,by the Main Bearings,which is fit round the main Journals provided.There are always at least two such bearings,one at the rare end and other at front end.the increase in number