What is the Difference Between Grease Lubrication and Oil Lubrication?
1 Answers
Grease lubrication and oil lubrication differ in terms of adhesion, temperature range, and pressure resistance. Adhesion Difference: When the friction part is in a static state, grease lubrication can maintain its original shape without being lost due to gravity, nor will it slide off vertical surfaces or leak through gaps. In contrast, oil lubrication cannot maintain its original shape and will directly flow away. Temperature Range Difference: The operating temperature range of grease lubrication is wider than that of oil lubrication. For example, general lithium-based grease can be used in a range of -20 to 120 degrees Celsius, while oil lubrication has a much narrower usable temperature range. Pressure Resistance Difference: Grease lubrication has a much stronger adsorption capacity on metal surfaces compared to lubricating oil, forming a relatively robust oil film that can withstand higher working loads. This is due to the large amount of polar substances contained in grease lubrication.