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Aerospace bearings are the bearings installed in aircraft and aerospace systems including commercial, private, military, or space applications. Materials include M50 tool steel (AMS6491), carbon chrome steel (AMS6444), the corrosion resistant AMS5930, 440C stainless steel, silicon nitride (ceramic) and titanium carbide-coated 440C. Typically special attention is given to the material specification, non-destructive testing and to the traceability of the bearing (that is, a system of documents that enables an engineer to trace a bearing, typically back to its manufacturing batch and material supply). ==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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Aerospace bearing」の詳細全文を読む スポンサード リンク
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