Crankshaft and Oil Film Journal Bearings Dan DeVries.

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Presentation transcript:

Crankshaft and Oil Film Journal Bearings Dan DeVries

Objective Purpose of Crankshaft Parts of Crankshaft How it’s Made Journal Bearings

Purpose of Crankshaft linear motion  rotational motion Pistons back-forth movement is changed to rotational motion by the crankshaft

Parts of a Crankshaft Main bearings Connecting rod bearings Counterweight Throws Main axle Flywheel

Parts of a Crankshaft Throws

How it’s Made Machined Strong, expensive Forged Strong, expensive Cast Weaker, cheaper

How it’s Made Dimensions critical Maintain balance Reduce wear at high RPM

Oil Film Journal Bearings Main bearings Connecting Rod Bearings

Sources =779 =779 Wikipedia (

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