Why A/E crank shaft is drilled for lubrication but not in M/E ?

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  •  It will reduce the strength of the crankshaft.
  • May possible to occur crack or failure
  • So we drill the hole in a/e Engines.
  • For main engine we use semi build crank shaft .- web and crank pin both are single oice 
  • For a/e engine we use forged crank shaft- its fully moulded type.good fatigue strength.


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