Machinery Lubrication

Machinery Lubrication May-June 2021

Machinery Lubrication magazine published by Noria Corporation

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22 | May - June 2021 | www . Cracking da Vinci's Code: Understanding Friction and Friction Modifiers Paul Farless | Noria Corporation LUBRICANT HANDLING & APPLICATION Condition Monitoring, Lubricant Analysis & Troubleshooting LUBRICANT SELECTION Factor: S4M Tribology is derived from the Greek root "τριβ" meaning "I rub," which describes the science of rubbing when followed by the Greek suffix "-ology." Today, this term simply refers to the study of lubrication, friction and wear. Friction should be treated as an enemy when it comes to machine reliability. When friction occurs, the mechanical energy is converted into heat. is heat, when combined with mechanical interactions, leads to wear, vibration and noise. ese symptoms should be monitored on a daily basis, as they are the reason why we utilize friction modifier additives in our lubricants. is article dives into the different types of friction along with the role of friction modi - fiers to help you determine if they are right for your lubrication needs. Types Of Friction Leonardo da Vinci, a tribology pioneer, first discovered the basic laws of sliding friction back in 1493. ese are the four types of friction he studied: 1. Sliding a) For example, simply rubbing your palms together is sliding friction. b) In industrial settings, we see sliding friction in Journal Bear- ings, Slideways, Gates, etc. 2. Rolling a) A heavy ball rolling across the floor will create rolling friction. b) Rolling element bearings, one of the most common mechanical designs, can experience rolling friction. 3. Static a) Pushing up against a heavy desk before it begins to slide is static friction. b) Similar to sliding friction, static friction is the force that holds the object at rest until the force of static friction is overcome and the object starts to move. 4. Fluid a) e resistance felt when stirring a fluid or a boat pushing its way through the water, is called fluid friction or sometimes ca lled "Viscous Resistance." b) Fluid Friction is a common type of friction often found in industrial machines that require lubrication. Learn More: Factor: S4M — Consolidation and Optimization Level: Management and Training(M) Stage: Condition Monitoring, Lubricant Analysis and Troubleshooting About: Establishing a lubricant consolidation process of optimizing the number and types of lubricants used will assist in keeping up with ever-evolving lubrication requirements without affecting machine performance or security. More about this ASCEND ™ Factor

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