Oil lubrication involves the use of liquid lubricants, typically oils, to create a thin film between the bearing surfaces. This method provides excellent lubricating properties and allows for efficient heat dissipation. Oil lubrication is particularly suitable for high-speed applications and heavy loads.

To ensure effective oil lubrication, it is important to consider factors such as viscosity, temperature, and oil change intervals. Selecting the appropriate oil viscosity based on the operating conditions is crucial for maintaining optimal film thickness. Regular oil analysis and timely oil changes help prevent contamination and degradation, ensuring consistent lubrication performance.

Grease lubrication involves the use of a semi-solid lubricant composed of oil and a thickening agent. The thickener provides structure to the lubricant, enabling it to adhere to the bearing surfaces and form a protective film. Grease lubrication offers several advantages, including ease of application, reduced leakage, and improved resistance to contaminants.

Embedded solid lubricants are another method used to lubricate sleeve bearings. In this method, a solid lubricant material is embedded or impregnated into the bearing material itself. The most commonly used solid lubricant is graphite due to its self-lubricating properties.

The embedded solid lubricant works by releasing a thin layer of lubricant when the bearing surfaces come into contact, reducing friction and wear. This method is particularly effective in applications where continuous lubrication may be challenging or where the bearing operates under extreme conditions such as high temperatures or in the presence of harsh chemicals.