Which of the following best describes a sleeve bearing?

A sleeve bearing is indeed characterized by an oil carrier for lubrication, which allows it to operate efficiently under various conditions. It is a type of plain bearing that consists of a cylindrical sleeve encasing a rotating shaft. As the shaft rotates, the sleeve bearing supports the shaft and provides a surface for it to rotate against.

The oil carrier within the sleeve helps to reduce friction and wear between the bearing and the rotating shaft by creating a lubricating film. This lubrication minimizes contact between the surfaces, thus prolonging the life of both the bearing and the shaft. The design of the sleeve bearing is essential in applications where smooth operation and load support are required, making the presence of an oil carrier a fundamental aspect of its functionality.