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- Main_bearing abstract "In a piston engine, the main bearings are the bearings on which the crankshaft rotates, usually plain or journal bearings. The bearings hold the crankshaft in place and prevent the forces created by the piston and transmitted to the crankshaft by the connecting rods from dislodging the crankshaft, instead forcing the crank to convert the reciprocating movement into rotation.While some small single-cylinder engines have only one main bearing, designed to deal with the bending moment exerted by the crank as a result of the force from the connecting rod, most engines have at least two main bearings, one at each end of the crank shaft and may have as many as one more than the number of crank pins. Increasing the number of bearings in an engine will generally increase the size and cost of the engine, but also provides stability to the crankshaft, which would otherwise have to endure greater bending moments from having the crank pin further from a bearing. The combination of bearing number and crankshaft design can also have an effect on engine balance; a more stable crankshaft will better avoid unbalance from flexing, but increasing the crankshaft length or girth to accommodate an additional bearing increases the rotational inertia of the crankshaft, which can have the opposite effect.Most modern automotive engines have one main bearing at each end of the crankshaft and another in between each adjacent pair of connecting rod journals, but not all engines conform to this generalization. Notable exceptions include the Ford flathead V-8, which often had only three main bearings, and the Chevrolet straight-6 engine, which had in various iterations, between 3 and 7 main bearings.When describing a crankshaft design, the number of main bearings is generally quoted, as the number of crank pins is determined by the engine configuration. For example, a crankshaft for an inline six engine will be described as three bearing or four bearing depending on its number of main bearings; The crank pins are not counted in this description. Similarly, when speaking of a crankshaft, the journals are the main bearing journals only. The crank pins are not normally called journals although they form the centre shafts of the big end bearings and are therefore journals in the more general sense.".
- Main_bearing wikiPageID "2828537".
- Main_bearing wikiPageLength "2612".
- Main_bearing wikiPageOutDegree "18".
- Main_bearing wikiPageRevisionID "633357855".
- Main_bearing wikiPageWikiLink Bearing_(mechanical).
- Main_bearing wikiPageWikiLink Bending_moment.
- Main_bearing wikiPageWikiLink Category:Bearings_(mechanical).
- Main_bearing wikiPageWikiLink Category:Crankshafts.
- Main_bearing wikiPageWikiLink Category:Engine_technology.
- Main_bearing wikiPageWikiLink Chevrolet_straight-6_engine.
- Main_bearing wikiPageWikiLink Connecting_rod.
- Main_bearing wikiPageWikiLink Crankpin.
- Main_bearing wikiPageWikiLink Crankshaft.
- Main_bearing wikiPageWikiLink Engine_balance.
- Main_bearing wikiPageWikiLink Engine_configuration.
- Main_bearing wikiPageWikiLink Ford_flathead_V8_engine.
- Main_bearing wikiPageWikiLink Moment_of_inertia.
- Main_bearing wikiPageWikiLink Piston.
- Main_bearing wikiPageWikiLink Plain_bearing.
- Main_bearing wikiPageWikiLink Reciprocating_engine.
- Main_bearing wikiPageWikiLinkText "Main bearing".
- Main_bearing wikiPageWikiLinkText "bearings".
- Main_bearing wikiPageWikiLinkText "crankshaft bearings".
- Main_bearing wikiPageWikiLinkText "engine bearings".
- Main_bearing wikiPageWikiLinkText "five main crankshaft bearings".
- Main_bearing wikiPageWikiLinkText "main bearing".
- Main_bearing wikiPageWikiLinkText "main bearings".
- Main_bearing wikiPageWikiLinkText "main journal".
- Main_bearing wikiPageUsesTemplate Template:Automotive_engine.
- Main_bearing wikiPageUsesTemplate Template:Unreferenced.
- Main_bearing subject Category:Bearings_(mechanical).
- Main_bearing subject Category:Crankshafts.
- Main_bearing subject Category:Engine_technology.
- Main_bearing hypernym Bearings.
- Main_bearing type Company.
- Main_bearing type Bearing.
- Main_bearing type Component.
- Main_bearing comment "In a piston engine, the main bearings are the bearings on which the crankshaft rotates, usually plain or journal bearings.".
- Main_bearing label "Main bearing".
- Main_bearing sameAs Q6736207.
- Main_bearing sameAs Supporti_di_banco.
- Main_bearing sameAs Rådelager.
- Main_bearing sameAs m.0859j3.
- Main_bearing sameAs Ramlager.
- Main_bearing sameAs Q6736207.
- Main_bearing wasDerivedFrom Main_bearing?oldid=633357855.
- Main_bearing isPrimaryTopicOf Main_bearing.