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Aerospace bearing by zyzy wang
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Aerospace bearing |
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Business,Business News,Business Opportunities
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Design
When designing aerospace bearings, it is important to take a few things into account, including:
material standard
design
lubrication type
surface coatings and treatments
non destructive testing
traceability
In order to assure bearing performance it is necessary for the bearing steel to be of high quality. Jet engine bearings are typically manufactured from metals manufactured using a vacuum arc remelt to enable material requirements to be met.
Jet engine shaft bearings and accessory drive shaft bearings normally use single piece or two piece machined retainers. The pressed steel or moulded retainers found on mass produced bearings are not used.
Temperature and moisture resistant oils, greases and lubricants are normally specified. If the lubricant is not correct the performance of the bearing will be compromised.
Application
In jet engines bearings can operate at over 200 Centigrade and at speeds over 10000rpm for the tubine shafts to over 30000rpm in the accessory drives. In wing control surface applications temperatures as low as -55 Centigrade may be encountered.
Monitoring
Bearings are a vital factor in many products and assemblies and their performance is often monitored continuously. In jet engines the oil supply is monitored to detect the pressence of metalic debris that could identify a failure either of the bearings or of other components whose failure may contaminate the bearings.
References
Categories: Bearings Aerospace engineeringHidden categories: Articles lacking sources from November 2009 All articles lacking sourcesAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearingAerospace bearing I am an expert from China Chemicals Products, usually analyzes all kind of industries situation, such as residual circuit breaker , 12v circuit breaker.
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