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Sleeve Bearing is a machine bearing in which the axle or shaft turns in a sleeve that is often grooved to facilitate distribution of lubricant to the bearing. Adapter sleeves are the most commonly used components for locating bearings with a tapered bore onto a cylindrical seat as they can be used on shafts.
The Role of Bearing Lubricant. Bearing Lubrication plays a vital role in the performance and life of rolling element bearings. The most important task of the lubricant is to separate parts moving relative to one another (balls or rollers and raceways) in order to minimize friction and prevent wear.