CLS Lubrication Systems & Maintenance

Question 1

What is the primary function of a lubrication system?

Accepted Answer

To reduce friction and wear of components.

Answer

A lubrication system's fundamental purpose is to deliver the correct lubricant to the critical contact points within machinery. By doing so, it creates a protective film that separates moving surfaces, thereby minimizing friction, preventing metal-to-metal contact, and significantly reducing abrasive wear. This action extends component lifespan and maintains operational efficiency.

Question 2

Which type of lubrication system is typically used in high-speed machinery?

Accepted Answer

Centralized lubrication system.

Answer

Centralized lubrication systems are highly effective for high-speed machinery because they precisely deliver controlled amounts of lubricant to multiple points from a single reservoir. This ensures consistent and adequate lubrication, preventing overheating and wear, which is crucial for maintaining performance and reliability in demanding, fast-moving applications where manual lubrication would be impractical or insufficient.

Question 3

Why is viscosity important when selecting a lubricant?

Accepted Answer

Answer

Viscosity is the lubricant's resistance to flow, which is critical for its function. A lubricant with appropriate viscosity will flow adequately to reach all necessary points while being thick enough to form a stable, protective film that separates moving surfaces under operating loads and temperatures. Incorrect viscosity can lead to insufficient film strength or excessive drag, compromising lubrication effectiveness.

Question 4

What is the role of a filter in a lubrication system?

Accepted Answer

To remove contaminants and debris from the lubricant.

Answer

Filters are essential components in a lubrication system, designed to capture and remove harmful particles such as metal wear debris, dust, and other contaminants. By keeping the lubricant clean, filters prevent these particles from causing abrasive wear to precision components, maintaining the lubricant's effectiveness, and extending the life of both the lubricant and the machinery.

Question 5

What type of lubricant is best suited for machinery operating under extreme pressure?

Accepted Answer

Grease with extreme pressure additives.

Answer

Machinery operating under extreme pressure conditions requires lubricants that can prevent metal-to-metal contact even when the lubricant film is squeezed out. Extreme Pressure (EP) additives in grease react chemically with metal surfaces to form a sacrificial layer that protects against welding and scoring under high loads, making them ideal for such demanding applications.

(CLS) Certified Lubrication Specialist Practice Test

(CLS) Certified Lubrication Specialist Practice Test

CLS Lubrication Systems & Maintenance