What type of oil is typically used for machine lubrication?

What type of oil is typically used for machine lubrication?

• A. Vegetable oil
• B. Hydraulic oil
• C. Mineral oil
• D. Motor oil

Answer: (C)

Mineral oil is commonly used for machine lubrication due to its excellent properties that make it suitable for this purpose. It is derived from refining crude oil and has a stable composition, which allows it to function effectively under a variety of temperature conditions and stresses that occur in machining processes. Mineral oil has good lubricating qualities that help reduce friction and wear between moving parts, thus extending the lifespan of the machine components. Additionally, its viscosity can be tailored based on the specific requirements of different machines, ensuring optimal performance. Mineral oil also offers good resistance to oxidation, which helps prevent the formation of sludge and deposits that could impair machine operation. In contrast, vegetable oil may not provide the same level of lubricity and stability required for high-performance machinery. Hydraulic oil is primarily designed for hydraulic systems and may not be suitable for general machining applications. Motor oil, while designed for lubrication in engines, contains additives that may not be appropriate for machining operations and could lead to the contamination of machining fluids.

Mineral oil is commonly used for machine lubrication due to its excellent properties that make it suitable for this purpose. It is derived from refining crude oil and has a stable composition, which allows it to function effectively under a variety of temperature conditions and stresses that occur in machining processes. Mineral oil has good lubricating qualities that help reduce friction and wear between moving parts, thus extending the lifespan of the machine components.

Additionally, its viscosity can be tailored based on the specific requirements of different machines, ensuring optimal performance. Mineral oil also offers good resistance to oxidation, which helps prevent the formation of sludge and deposits that could impair machine operation.

In contrast, vegetable oil may not provide the same level of lubricity and stability required for high-performance machinery. Hydraulic oil is primarily designed for hydraulic systems and may not be suitable for general machining applications. Motor oil, while designed for lubrication in engines, contains additives that may not be appropriate for machining operations and could lead to the contamination of machining fluids.