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Chongqing Paize Motorcycle Parts Co.,Ltd
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introduction of crankcase

- Apr 03, 2018 -

A crankcase is the housing for the crankshaft in a reciprocating internal combustion engine.The enclosure forms the largest cavity in the engine and is located below the cylinder(s),which in a multicylinder engine is usually intergrated into one or several cylinder blocks. Crankcase have often been discrete parts ,but more often they are intergral with the cylinder bank(s),forming an engine block .nevertheless, the area around the crankshaft is still usually called the crankcase.Crankcase and other basic engine structural components (e.g.,cylinders ,cylinder blocks ,cylinder heads,and integrated cominations thereof) are typically made of cast iron or cast aluminium via sand casting.Today the foundry processes are usually highly automated ,with a few skilled workers to manage the casting of thousands of part.

A crankcase often has an opening in the bottom to which an oil pan is attached with a gasketed bolted joint .Some crakcase designs fully surround the crank's main bearing journals ,whereas many others form only one half ,with a bearing cap forming the other .Some crankcase areas require no structural strength from the oil pan itself (in which case the oil pan is typically stamped from sheet steel),whereas other crankcase designs do(in which case the oil pan is a casting in it's own right).Both the crankcase and any rigid cast oil pan often have reinforcing ribs cast into them,as well as bosses which are drilled and tapped to recieve mounting screws/bolts for various other engine parts.

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