| 摘要 |
An oil sealing bearing for an axially reciprocating shaft is provided. Tobacco products are evaluated in terms of their fragrance or aroma, however the reciprocating shaft through the oil sealing bearing is required to effect its function reliably and very quickly, that is the reciprocating shaft requires a slide bearing which offers low frictional resistance and have a long life with a sufficient lubricating oil, and further requires a perfect oil seal effect lest the lubricating oil should blot onto any processing section where tobacco is loaded. The oil sealing bearing comprises two slide supports, a cap member and an annular oil scraper. The annular oil scraper serves to scrape off excess oil in an oil film formed non-uniformly on the surface of an axially reciprocating shaft and is disposed in a bearing body such that it is always in a coaxial relation to the shaft regardless of even very quick radial displacement of the shaft in the bearing body. Thus, it is possible to obtain an oil sealing bearing which can eliminate the possibility for lubricating oil to be brought into a packing zone where packing of tobacco products is being done. Therefore, even in the case of high speed of the shaft, the bearing can obtain competing requirements such as the oil seal effect and fragrance of tobacco products.
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